diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c b/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c
index 4400992..febc1ad 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/b_exp.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
  * Copyright (c) 1985, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -33,7 +35,7 @@
 
 /* @(#)exp.c	8.1 (Berkeley) 6/4/93 */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/bsdsrc/b_exp.c 325966 2017-11-18 14:26:50Z pfg $");
 
 
 /* EXP(X)
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c b/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c
index 5a4b964..8102226 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/b_log.c
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -33,10 +35,9 @@
 
 /* @(#)log.c	8.2 (Berkeley) 11/30/93 */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/bsdsrc/b_log.c 326670 2017-12-07 20:41:23Z dim $");
 
 #include <math.h>
-#include <errno.h>
 
 #include "mathimpl.h"
 
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c b/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c
index 1d0af44..e530649 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
  * Copyright (c) 1992, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -33,7 +35,7 @@
 
 /* @(#)gamma.c	8.1 (Berkeley) 6/4/93 */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/bsdsrc/b_tgamma.c 325966 2017-11-18 14:26:50Z pfg $");
 
 /*
  * This code by P. McIlroy, Oct 1992;
diff --git a/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h b/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
index 04a4b6e..e38ea4f 100644
--- a/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
+++ b/libm/upstream-freebsd/lib/msun/bsdsrc/mathimpl.h
@@ -1,4 +1,6 @@
-/*
+/*-
+ * SPDX-License-Identifier: BSD-4-Clause
+ *
  * Copyright (c) 1988, 1993
  *	The Regents of the University of California.  All rights reserved.
  *
@@ -31,7 +33,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)mathimpl.h	8.1 (Berkeley) 6/4/93
- * $FreeBSD$
+ * $FreeBSD: head/lib/msun/bsdsrc/mathimpl.h 325966 2017-11-18 14:26:50Z pfg $
  */
 
 #ifndef _MATHIMPL_H_
diff --git a/libm/upstream-freebsd/lib/msun/ld128/e_powl.c b/libm/upstream-freebsd/lib/msun/ld128/e_powl.c
new file mode 100644
index 0000000..15a57dd
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/ld128/e_powl.c
@@ -0,0 +1,443 @@
+/*-
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+/*
+ * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* powl(x,y) return x**y
+ *
+ *		      n
+ * Method:  Let x =  2   * (1+f)
+ *	1. Compute and return log2(x) in two pieces:
+ *		log2(x) = w1 + w2,
+ *	   where w1 has 113-53 = 60 bit trailing zeros.
+ *	2. Perform y*log2(x) = n+y' by simulating muti-precision
+ *	   arithmetic, where |y'|<=0.5.
+ *	3. Return x**y = 2**n*exp(y'*log2)
+ *
+ * Special cases:
+ *	1.  (anything) ** 0  is 1
+ *	2.  (anything) ** 1  is itself
+ *	3.  (anything) ** NAN is NAN
+ *	4.  NAN ** (anything except 0) is NAN
+ *	5.  +-(|x| > 1) **  +INF is +INF
+ *	6.  +-(|x| > 1) **  -INF is +0
+ *	7.  +-(|x| < 1) **  +INF is +0
+ *	8.  +-(|x| < 1) **  -INF is +INF
+ *	9.  +-1         ** +-INF is NAN
+ *	10. +0 ** (+anything except 0, NAN)               is +0
+ *	11. -0 ** (+anything except 0, NAN, odd integer)  is +0
+ *	12. +0 ** (-anything except 0, NAN)               is +INF
+ *	13. -0 ** (-anything except 0, NAN, odd integer)  is +INF
+ *	14. -0 ** (odd integer) = -( +0 ** (odd integer) )
+ *	15. +INF ** (+anything except 0,NAN) is +INF
+ *	16. +INF ** (-anything except 0,NAN) is +0
+ *	17. -INF ** (anything)  = -0 ** (-anything)
+ *	18. (-anything) ** (integer) is (-1)**(integer)*(+anything**integer)
+ *	19. (-anything except 0 and inf) ** (non-integer) is NAN
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/ld128/e_powl.c 336362 2018-07-17 07:42:14Z bde $");
+
+#include <float.h>
+#include <math.h>
+
+#include "math_private.h"
+
+static const long double bp[] = {
+  1.0L,
+  1.5L,
+};
+
+/* log_2(1.5) */
+static const long double dp_h[] = {
+  0.0,
+  5.8496250072115607565592654282227158546448E-1L
+};
+
+/* Low part of log_2(1.5) */
+static const long double dp_l[] = {
+  0.0,
+  1.0579781240112554492329533686862998106046E-16L
+};
+
+static const long double zero = 0.0L,
+  one = 1.0L,
+  two = 2.0L,
+  two113 = 1.0384593717069655257060992658440192E34L,
+  huge = 1.0e3000L,
+  tiny = 1.0e-3000L;
+
+/* 3/2 log x = 3 z + z^3 + z^3 (z^2 R(z^2))
+   z = (x-1)/(x+1)
+   1 <= x <= 1.25
+   Peak relative error 2.3e-37 */
+static const long double LN[] =
+{
+ -3.0779177200290054398792536829702930623200E1L,
+  6.5135778082209159921251824580292116201640E1L,
+ -4.6312921812152436921591152809994014413540E1L,
+  1.2510208195629420304615674658258363295208E1L,
+ -9.9266909031921425609179910128531667336670E-1L
+};
+static const long double LD[] =
+{
+ -5.129862866715009066465422805058933131960E1L,
+  1.452015077564081884387441590064272782044E2L,
+ -1.524043275549860505277434040464085593165E2L,
+  7.236063513651544224319663428634139768808E1L,
+ -1.494198912340228235853027849917095580053E1L
+  /* 1.0E0 */
+};
+
+/* exp(x) = 1 + x - x / (1 - 2 / (x - x^2 R(x^2)))
+   0 <= x <= 0.5
+   Peak relative error 5.7e-38  */
+static const long double PN[] =
+{
+  5.081801691915377692446852383385968225675E8L,
+  9.360895299872484512023336636427675327355E6L,
+  4.213701282274196030811629773097579432957E4L,
+  5.201006511142748908655720086041570288182E1L,
+  9.088368420359444263703202925095675982530E-3L,
+};
+static const long double PD[] =
+{
+  3.049081015149226615468111430031590411682E9L,
+  1.069833887183886839966085436512368982758E8L,
+  8.259257717868875207333991924545445705394E5L,
+  1.872583833284143212651746812884298360922E3L,
+  /* 1.0E0 */
+};
+
+static const long double
+  /* ln 2 */
+  lg2 = 6.9314718055994530941723212145817656807550E-1L,
+  lg2_h = 6.9314718055994528622676398299518041312695E-1L,
+  lg2_l = 2.3190468138462996154948554638754786504121E-17L,
+  ovt = 8.0085662595372944372e-0017L,
+  /* 2/(3*log(2)) */
+  cp = 9.6179669392597560490661645400126142495110E-1L,
+  cp_h = 9.6179669392597555432899980587535537779331E-1L,
+  cp_l = 5.0577616648125906047157785230014751039424E-17L;
+
+long double
+powl(long double x, long double y)
+{
+  long double z, ax, z_h, z_l, p_h, p_l;
+  long double yy1, t1, t2, r, s, t, u, v, w;
+  long double s2, s_h, s_l, t_h, t_l;
+  int32_t i, j, k, yisint, n;
+  u_int32_t ix, iy;
+  int32_t hx, hy;
+  ieee_quad_shape_type o, p, q;
+
+  p.value = x;
+  hx = p.parts32.mswhi;
+  ix = hx & 0x7fffffff;
+
+  q.value = y;
+  hy = q.parts32.mswhi;
+  iy = hy & 0x7fffffff;
+
+
+  /* y==zero: x**0 = 1 */
+  if ((iy | q.parts32.mswlo | q.parts32.lswhi | q.parts32.lswlo) == 0)
+    return one;
+
+  /* 1.0**y = 1; -1.0**+-Inf = 1 */
+  if (x == one)
+    return one;
+  if (x == -1.0L && iy == 0x7fff0000
+      && (q.parts32.mswlo | q.parts32.lswhi | q.parts32.lswlo) == 0)
+    return one;
+
+  /* +-NaN return x+y */
+  if ((ix > 0x7fff0000)
+      || ((ix == 0x7fff0000)
+	  && ((p.parts32.mswlo | p.parts32.lswhi | p.parts32.lswlo) != 0))
+      || (iy > 0x7fff0000)
+      || ((iy == 0x7fff0000)
+	  && ((q.parts32.mswlo | q.parts32.lswhi | q.parts32.lswlo) != 0)))
+    return nan_mix(x, y);
+
+  /* determine if y is an odd int when x < 0
+   * yisint = 0       ... y is not an integer
+   * yisint = 1       ... y is an odd int
+   * yisint = 2       ... y is an even int
+   */
+  yisint = 0;
+  if (hx < 0)
+    {
+      if (iy >= 0x40700000)	/* 2^113 */
+	yisint = 2;		/* even integer y */
+      else if (iy >= 0x3fff0000)	/* 1.0 */
+	{
+	  if (floorl (y) == y)
+	    {
+	      z = 0.5 * y;
+	      if (floorl (z) == z)
+		yisint = 2;
+	      else
+		yisint = 1;
+	    }
+	}
+    }
+
+  /* special value of y */
+  if ((q.parts32.mswlo | q.parts32.lswhi | q.parts32.lswlo) == 0)
+    {
+      if (iy == 0x7fff0000)	/* y is +-inf */
+	{
+	  if (((ix - 0x3fff0000) | p.parts32.mswlo | p.parts32.lswhi |
+	    p.parts32.lswlo) == 0)
+	    return y - y;	/* +-1**inf is NaN */
+	  else if (ix >= 0x3fff0000)	/* (|x|>1)**+-inf = inf,0 */
+	    return (hy >= 0) ? y : zero;
+	  else			/* (|x|<1)**-,+inf = inf,0 */
+	    return (hy < 0) ? -y : zero;
+	}
+      if (iy == 0x3fff0000)
+	{			/* y is  +-1 */
+	  if (hy < 0)
+	    return one / x;
+	  else
+	    return x;
+	}
+      if (hy == 0x40000000)
+	return x * x;		/* y is  2 */
+      if (hy == 0x3ffe0000)
+	{			/* y is  0.5 */
+	  if (hx >= 0)		/* x >= +0 */
+	    return sqrtl (x);
+	}
+    }
+
+  ax = fabsl (x);
+  /* special value of x */
+  if ((p.parts32.mswlo | p.parts32.lswhi | p.parts32.lswlo) == 0)
+    {
+      if (ix == 0x7fff0000 || ix == 0 || ix == 0x3fff0000)
+	{
+	  z = ax;		/*x is +-0,+-inf,+-1 */
+	  if (hy < 0)
+	    z = one / z;	/* z = (1/|x|) */
+	  if (hx < 0)
+	    {
+	      if (((ix - 0x3fff0000) | yisint) == 0)
+		{
+		  z = (z - z) / (z - z);	/* (-1)**non-int is NaN */
+		}
+	      else if (yisint == 1)
+		z = -z;		/* (x<0)**odd = -(|x|**odd) */
+	    }
+	  return z;
+	}
+    }
+
+  /* (x<0)**(non-int) is NaN */
+  if (((((u_int32_t) hx >> 31) - 1) | yisint) == 0)
+    return (x - x) / (x - x);
+
+  /* |y| is huge.
+     2^-16495 = 1/2 of smallest representable value.
+     If (1 - 1/131072)^y underflows, y > 1.4986e9 */
+  if (iy > 0x401d654b)
+    {
+      /* if (1 - 2^-113)^y underflows, y > 1.1873e38 */
+      if (iy > 0x407d654b)
+	{
+	  if (ix <= 0x3ffeffff)
+	    return (hy < 0) ? huge * huge : tiny * tiny;
+	  if (ix >= 0x3fff0000)
+	    return (hy > 0) ? huge * huge : tiny * tiny;
+	}
+      /* over/underflow if x is not close to one */
+      if (ix < 0x3ffeffff)
+	return (hy < 0) ? huge * huge : tiny * tiny;
+      if (ix > 0x3fff0000)
+	return (hy > 0) ? huge * huge : tiny * tiny;
+    }
+
+  n = 0;
+  /* take care subnormal number */
+  if (ix < 0x00010000)
+    {
+      ax *= two113;
+      n -= 113;
+      o.value = ax;
+      ix = o.parts32.mswhi;
+    }
+  n += ((ix) >> 16) - 0x3fff;
+  j = ix & 0x0000ffff;
+  /* determine interval */
+  ix = j | 0x3fff0000;		/* normalize ix */
+  if (j <= 0x3988)
+    k = 0;			/* |x|<sqrt(3/2) */
+  else if (j < 0xbb67)
+    k = 1;			/* |x|<sqrt(3)   */
+  else
+    {
+      k = 0;
+      n += 1;
+      ix -= 0x00010000;
+    }
+
+  o.value = ax;
+  o.parts32.mswhi = ix;
+  ax = o.value;
+
+  /* compute s = s_h+s_l = (x-1)/(x+1) or (x-1.5)/(x+1.5) */
+  u = ax - bp[k];		/* bp[0]=1.0, bp[1]=1.5 */
+  v = one / (ax + bp[k]);
+  s = u * v;
+  s_h = s;
+
+  o.value = s_h;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  s_h = o.value;
+  /* t_h=ax+bp[k] High */
+  t_h = ax + bp[k];
+  o.value = t_h;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  t_h = o.value;
+  t_l = ax - (t_h - bp[k]);
+  s_l = v * ((u - s_h * t_h) - s_h * t_l);
+  /* compute log(ax) */
+  s2 = s * s;
+  u = LN[0] + s2 * (LN[1] + s2 * (LN[2] + s2 * (LN[3] + s2 * LN[4])));
+  v = LD[0] + s2 * (LD[1] + s2 * (LD[2] + s2 * (LD[3] + s2 * (LD[4] + s2))));
+  r = s2 * s2 * u / v;
+  r += s_l * (s_h + s);
+  s2 = s_h * s_h;
+  t_h = 3.0 + s2 + r;
+  o.value = t_h;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  t_h = o.value;
+  t_l = r - ((t_h - 3.0) - s2);
+  /* u+v = s*(1+...) */
+  u = s_h * t_h;
+  v = s_l * t_h + t_l * s;
+  /* 2/(3log2)*(s+...) */
+  p_h = u + v;
+  o.value = p_h;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  p_h = o.value;
+  p_l = v - (p_h - u);
+  z_h = cp_h * p_h;		/* cp_h+cp_l = 2/(3*log2) */
+  z_l = cp_l * p_h + p_l * cp + dp_l[k];
+  /* log2(ax) = (s+..)*2/(3*log2) = n + dp_h + z_h + z_l */
+  t = (long double) n;
+  t1 = (((z_h + z_l) + dp_h[k]) + t);
+  o.value = t1;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  t1 = o.value;
+  t2 = z_l - (((t1 - t) - dp_h[k]) - z_h);
+
+  /* s (sign of result -ve**odd) = -1 else = 1 */
+  s = one;
+  if (((((u_int32_t) hx >> 31) - 1) | (yisint - 1)) == 0)
+    s = -one;			/* (-ve)**(odd int) */
+
+  /* split up y into yy1+y2 and compute (yy1+y2)*(t1+t2) */
+  yy1 = y;
+  o.value = yy1;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  yy1 = o.value;
+  p_l = (y - yy1) * t1 + y * t2;
+  p_h = yy1 * t1;
+  z = p_l + p_h;
+  o.value = z;
+  j = o.parts32.mswhi;
+  if (j >= 0x400d0000) /* z >= 16384 */
+    {
+      /* if z > 16384 */
+      if (((j - 0x400d0000) | o.parts32.mswlo | o.parts32.lswhi |
+	o.parts32.lswlo) != 0)
+	return s * huge * huge;	/* overflow */
+      else
+	{
+	  if (p_l + ovt > z - p_h)
+	    return s * huge * huge;	/* overflow */
+	}
+    }
+  else if ((j & 0x7fffffff) >= 0x400d01b9)	/* z <= -16495 */
+    {
+      /* z < -16495 */
+      if (((j - 0xc00d01bc) | o.parts32.mswlo | o.parts32.lswhi |
+	o.parts32.lswlo)
+	  != 0)
+	return s * tiny * tiny;	/* underflow */
+      else
+	{
+	  if (p_l <= z - p_h)
+	    return s * tiny * tiny;	/* underflow */
+	}
+    }
+  /* compute 2**(p_h+p_l) */
+  i = j & 0x7fffffff;
+  k = (i >> 16) - 0x3fff;
+  n = 0;
+  if (i > 0x3ffe0000)
+    {				/* if |z| > 0.5, set n = [z+0.5] */
+      n = floorl (z + 0.5L);
+      t = n;
+      p_h -= t;
+    }
+  t = p_l + p_h;
+  o.value = t;
+  o.parts32.lswlo = 0;
+  o.parts32.lswhi &= 0xf8000000;
+  t = o.value;
+  u = t * lg2_h;
+  v = (p_l - (t - p_h)) * lg2 + t * lg2_l;
+  z = u + v;
+  w = v - (z - u);
+  /*  exp(z) */
+  t = z * z;
+  u = PN[0] + t * (PN[1] + t * (PN[2] + t * (PN[3] + t * PN[4])));
+  v = PD[0] + t * (PD[1] + t * (PD[2] + t * (PD[3] + t)));
+  t1 = z - t * u / v;
+  r = (z * t1) / (t1 - two) - (w + z * w);
+  z = one - (r - z);
+  o.value = z;
+  j = o.parts32.mswhi;
+  j += (n << 16);
+  if ((j >> 16) <= 0)
+    z = scalbnl (z, n);	/* subnormal output */
+  else
+    {
+      o.parts32.mswhi = j;
+      z = o.value;
+    }
+  return s * z;
+}
diff --git a/libm/upstream-freebsd/lib/msun/ld128/invtrig.c b/libm/upstream-freebsd/lib/msun/ld128/invtrig.c
index 4ceca8a..e89a226 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/invtrig.c
+++ b/libm/upstream-freebsd/lib/msun/ld128/invtrig.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2008 David Schultz <das@FreeBSD.ORG>
  * All rights reserved.
  *
@@ -25,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/ld128/invtrig.c 326219 2017-11-26 02:00:33Z pfg $");
 
 #include "invtrig.h"
 
diff --git a/libm/upstream-freebsd/lib/msun/ld128/invtrig.h b/libm/upstream-freebsd/lib/msun/ld128/invtrig.h
index 12f598b..fd1302a 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/invtrig.h
+++ b/libm/upstream-freebsd/lib/msun/ld128/invtrig.h
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2008 David Schultz <das@FreeBSD.ORG>
  * All rights reserved.
  *
@@ -23,7 +25,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $FreeBSD$
+ * $FreeBSD: head/lib/msun/ld128/invtrig.h 326219 2017-11-26 02:00:33Z pfg $
  */
 
 #include <float.h>
diff --git a/libm/upstream-freebsd/lib/msun/ld128/k_expl.h b/libm/upstream-freebsd/lib/msun/ld128/k_expl.h
index e843d43..4c041e8 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/k_expl.h
+++ b/libm/upstream-freebsd/lib/msun/ld128/k_expl.h
@@ -1,6 +1,8 @@
 /* from: FreeBSD: head/lib/msun/ld128/s_expl.c 251345 2013-06-03 20:09:22Z kargl */
 
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009-2013 Steven G. Kargl
  * All rights reserved.
  *
@@ -29,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/ld128/k_expl.h 275819 2014-12-16 09:21:56Z ed $");
+__FBSDID("$FreeBSD: head/lib/msun/ld128/k_expl.h 326219 2017-11-26 02:00:33Z pfg $");
 
 /*
  * ld128 version of k_expl.h.  See ../ld80/s_expl.c for most comments.
diff --git a/libm/upstream-freebsd/lib/msun/ld128/s_exp2l.c b/libm/upstream-freebsd/lib/msun/ld128/s_exp2l.c
index 5afa37e..effeb78 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/s_exp2l.c
+++ b/libm/upstream-freebsd/lib/msun/ld128/s_exp2l.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2005-2008 David Schultz <das@FreeBSD.ORG>
  * All rights reserved.
  *
@@ -25,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/ld128/s_exp2l.c 326219 2017-11-26 02:00:33Z pfg $");
 
 #include <float.h>
 #include <stdint.h>
diff --git a/libm/upstream-freebsd/lib/msun/ld128/s_expl.c b/libm/upstream-freebsd/lib/msun/ld128/s_expl.c
index a6a9676..53bc04a 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/s_expl.c
+++ b/libm/upstream-freebsd/lib/msun/ld128/s_expl.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2009-2013 Steven G. Kargl
  * All rights reserved.
  *
@@ -27,7 +29,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/ld128/s_expl.c 326219 2017-11-26 02:00:33Z pfg $");
 
 /*
  * ld128 version of s_expl.c.  See ../ld80/s_expl.c for most comments.
diff --git a/libm/upstream-freebsd/lib/msun/ld128/s_logl.c b/libm/upstream-freebsd/lib/msun/ld128/s_logl.c
index 391d623..6c9981b 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/s_logl.c
+++ b/libm/upstream-freebsd/lib/msun/ld128/s_logl.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2007-2013 Bruce D. Evans
  * All rights reserved.
  *
@@ -25,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/ld128/s_logl.c 326219 2017-11-26 02:00:33Z pfg $");
 
 /**
  * Implementation of the natural logarithm of x for 128-bit format.
diff --git a/libm/upstream-freebsd/lib/msun/ld128/s_nanl.c b/libm/upstream-freebsd/lib/msun/ld128/s_nanl.c
index 0f74a13..1b8196f 100644
--- a/libm/upstream-freebsd/lib/msun/ld128/s_nanl.c
+++ b/libm/upstream-freebsd/lib/msun/ld128/s_nanl.c
@@ -1,4 +1,6 @@
 /*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
  * Copyright (c) 2007 David Schultz
  * All rights reserved.
  *
@@ -23,7 +25,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $FreeBSD$
+ * $FreeBSD: head/lib/msun/ld128/s_nanl.c 326219 2017-11-26 02:00:33Z pfg $
  */
 
 #include <math.h>
diff --git a/libm/upstream-freebsd/lib/msun/src/catrig.c b/libm/upstream-freebsd/lib/msun/src/catrig.c
index 025076f..4a2d076 100644
--- a/libm/upstream-freebsd/lib/msun/src/catrig.c
+++ b/libm/upstream-freebsd/lib/msun/src/catrig.c
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/catrig.c 327232 2017-12-27 03:23:41Z eadler $");
+__FBSDID("$FreeBSD: head/lib/msun/src/catrig.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <float.h>
@@ -300,7 +300,7 @@
 		 * C99 leaves it optional whether to raise invalid if one of
 		 * the arguments is not NaN, so we opt not to raise it.
 		 */
-		return (CMPLX(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLX(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON) {
@@ -384,7 +384,7 @@
 		 * C99 leaves it optional whether to raise invalid if one of
 		 * the arguments is not NaN, so we opt not to raise it.
 		 */
-		return (CMPLX(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLX(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON) {
@@ -601,7 +601,7 @@
 		 * C99 leaves it optional whether to raise invalid if one of
 		 * the arguments is not NaN, so we opt not to raise it.
 		 */
-		return (CMPLX(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLX(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON)
diff --git a/libm/upstream-freebsd/lib/msun/src/catrigf.c b/libm/upstream-freebsd/lib/msun/src/catrigf.c
index 344290a..e251871 100644
--- a/libm/upstream-freebsd/lib/msun/src/catrigf.c
+++ b/libm/upstream-freebsd/lib/msun/src/catrigf.c
@@ -41,7 +41,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/catrigf.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/catrigf.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <float.h>
@@ -163,7 +163,7 @@
 			return (CMPLXF(y, x + x));
 		if (y == 0)
 			return (CMPLXF(x + x, y));
-		return (CMPLXF(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLXF(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON) {
@@ -221,7 +221,7 @@
 			return (CMPLXF(x + x, -y));
 		if (x == 0)
 			return (CMPLXF(pio2_hi + pio2_lo, y + y));
-		return (CMPLXF(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLXF(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON) {
@@ -359,7 +359,7 @@
 		if (isinf(y))
 			return (CMPLXF(copysignf(0, x),
 			    copysignf(pio2_hi + pio2_lo, y)));
-		return (CMPLXF(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLXF(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON)
diff --git a/libm/upstream-freebsd/lib/msun/src/catrigl.c b/libm/upstream-freebsd/lib/msun/src/catrigl.c
index 960c1ca..63b068a 100644
--- a/libm/upstream-freebsd/lib/msun/src/catrigl.c
+++ b/libm/upstream-freebsd/lib/msun/src/catrigl.c
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/catrigl.c 323003 2017-08-29 22:32:29Z rlibby $");
+__FBSDID("$FreeBSD: head/lib/msun/src/catrigl.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <float.h>
@@ -182,7 +182,7 @@
 			return (CMPLXL(y, x + x));
 		if (y == 0)
 			return (CMPLXL(x + x, y));
-		return (CMPLXL(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLXL(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON) {
@@ -241,7 +241,7 @@
 			return (CMPLXL(x + x, -y));
 		if (x == 0)
 			return (CMPLXL(pio2_hi + pio2_lo, y + y));
-		return (CMPLXL(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLXL(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON) {
@@ -380,7 +380,7 @@
 		if (isinf(y))
 			return (CMPLXL(copysignl(0, x),
 			    copysignl(pio2_hi + pio2_lo, y)));
-		return (CMPLXL(x + 0.0L + (y + 0), x + 0.0L + (y + 0)));
+		return (CMPLXL(nan_mix(x, y), nan_mix(x, y)));
 	}
 
 	if (ax > RECIP_EPSILON || ay > RECIP_EPSILON)
diff --git a/libm/upstream-freebsd/lib/msun/src/e_atan2.c b/libm/upstream-freebsd/lib/msun/src/e_atan2.c
index ee5b15d..bef9df8 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_atan2.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_atan2.c
@@ -13,7 +13,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_atan2.c 329259 2018-02-14 07:59:30Z eadler $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_atan2.c 336362 2018-07-17 07:42:14Z bde $");
 
 /* __ieee754_atan2(y,x)
  * Method :
@@ -70,7 +70,7 @@
 	iy = hy&0x7fffffff;
 	if(((ix|((lx|-lx)>>31))>0x7ff00000)||
 	   ((iy|((ly|-ly)>>31))>0x7ff00000))	/* x or y is NaN */
-	   return x+y;
+	    return nan_mix(x, y);
 	if(hx==0x3ff00000&&lx==0) return atan(y);   /* x=1.0 */
 	m = ((hy>>31)&1)|((hx>>30)&2);	/* 2*sign(x)+sign(y) */
 
diff --git a/libm/upstream-freebsd/lib/msun/src/e_atan2f.c b/libm/upstream-freebsd/lib/msun/src/e_atan2f.c
index fc77bff..0ce9bc0 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_atan2f.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_atan2f.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_atan2f.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include "math.h"
 #include "math_private.h"
@@ -41,7 +41,7 @@
 	iy = hy&0x7fffffff;
 	if((ix>0x7f800000)||
 	   (iy>0x7f800000))	/* x or y is NaN */
-	   return x+y;
+	    return nan_mix(x, y);
 	if(hx==0x3f800000) return atanf(y);   /* x=1.0 */
 	m = ((hy>>31)&1)|((hx>>30)&2);	/* 2*sign(x)+sign(y) */
 
diff --git a/libm/upstream-freebsd/lib/msun/src/e_atan2l.c b/libm/upstream-freebsd/lib/msun/src/e_atan2l.c
index 0326482..8f80acc 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_atan2l.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_atan2l.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_atan2l.c 336362 2018-07-17 07:42:14Z bde $");
 
 /*
  * See comments in e_atan2.c.
@@ -62,7 +62,7 @@
 	     ((ux.bits.manh&~LDBL_NBIT)|ux.bits.manl)!=0) ||	/* x is NaN */
 	    (expty==BIAS+LDBL_MAX_EXP &&
 	     ((uy.bits.manh&~LDBL_NBIT)|uy.bits.manl)!=0))	/* y is NaN */
-	    return x+y;
+	    return nan_mix(x, y);
 	if (expsignx==BIAS && ((ux.bits.manh&~LDBL_NBIT)|ux.bits.manl)==0)
 	    return atanl(y);					/* x=1.0 */
 	m = ((expsigny>>15)&1)|((expsignx>>14)&2);	/* 2*sign(x)+sign(y) */
diff --git a/libm/upstream-freebsd/lib/msun/src/e_fmod.c b/libm/upstream-freebsd/lib/msun/src/e_fmod.c
index bad066a..fbb2d93 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_fmod.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_fmod.c
@@ -12,7 +12,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_fmod.c 305380 2016-09-04 12:01:32Z bde $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_fmod.c 336663 2018-07-24 10:10:16Z bde $");
 
 /* 
  * __ieee754_fmod(x,y)
@@ -42,7 +42,7 @@
     /* purge off exception values */
 	if((hy|ly)==0||(hx>=0x7ff00000)||	/* y=0,or x not finite */
 	  ((hy|((ly|-ly)>>31))>0x7ff00000))	/* or y is NaN */
-	    return (x*y)/(x*y);
+	    return nan_mix_op(x, y, *)/nan_mix_op(x, y, *);
 	if(hx<=hy) {
 	    if((hx<hy)||(lx<ly)) return x;	/* |x|<|y| return x */
 	    if(lx==ly) 
diff --git a/libm/upstream-freebsd/lib/msun/src/e_fmodf.c b/libm/upstream-freebsd/lib/msun/src/e_fmodf.c
index 52ce373..3783a88 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_fmodf.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_fmodf.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_fmodf.c 336663 2018-07-24 10:10:16Z bde $");
 
 /*
  * __ieee754_fmodf(x,y)
@@ -41,7 +41,7 @@
     /* purge off exception values */
 	if(hy==0||(hx>=0x7f800000)||		/* y=0,or x not finite */
 	   (hy>0x7f800000))			/* or y is NaN */
-	    return (x*y)/(x*y);
+	    return nan_mix_op(x, y, *)/nan_mix_op(x, y, *);
 	if(hx<hy) return x;			/* |x|<|y| return x */
 	if(hx==hy)
 	    return Zero[(u_int32_t)sx>>31];	/* |x|=|y| return x*0*/
diff --git a/libm/upstream-freebsd/lib/msun/src/e_fmodl.c b/libm/upstream-freebsd/lib/msun/src/e_fmodl.c
index e315f76..77d1642 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_fmodl.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_fmodl.c
@@ -11,7 +11,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_fmodl.c 336663 2018-07-24 10:10:16Z bde $");
 
 #include <float.h>
 #include <stdint.h>
@@ -79,7 +79,7 @@
 	   (ux.bits.exp == BIAS + LDBL_MAX_EXP) ||	 /* or x not finite */
 	   (uy.bits.exp == BIAS + LDBL_MAX_EXP &&
 	    ((uy.bits.manh&~LDBL_NBIT)|uy.bits.manl)!=0)) /* or y is NaN */
-	    return (x*y)/(x*y);
+	    return nan_mix_op(x, y, *)/nan_mix_op(x, y, *);
 	if(ux.bits.exp<=uy.bits.exp) {
 	    if((ux.bits.exp<uy.bits.exp) ||
 	       (ux.bits.manh<=uy.bits.manh &&
diff --git a/libm/upstream-freebsd/lib/msun/src/e_hypot.c b/libm/upstream-freebsd/lib/msun/src/e_hypot.c
index 2398e98..0c16767 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_hypot.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_hypot.c
@@ -12,7 +12,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_hypot.c 336362 2018-07-17 07:42:14Z bde $");
 
 /* __ieee754_hypot(x,y)
  *
@@ -70,7 +70,7 @@
 	   if(ha >= 0x7ff00000) {	/* Inf or NaN */
 	       u_int32_t low;
 	       /* Use original arg order iff result is NaN; quieten sNaNs. */
-	       w = fabs(x+0.0)-fabs(y+0.0);
+	       w = fabsl(x+0.0L)-fabs(y+0);
 	       GET_LOW_WORD(low,a);
 	       if(((ha&0xfffff)|low)==0) w = a;
 	       GET_LOW_WORD(low,b);
diff --git a/libm/upstream-freebsd/lib/msun/src/e_hypotf.c b/libm/upstream-freebsd/lib/msun/src/e_hypotf.c
index 6d083e4..79e4697 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_hypotf.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_hypotf.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_hypotf.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include "math.h"
 #include "math_private.h"
@@ -37,7 +37,7 @@
 	if(ha > 0x58800000) {	/* a>2**50 */
 	   if(ha >= 0x7f800000) {	/* Inf or NaN */
 	       /* Use original arg order iff result is NaN; quieten sNaNs. */
-	       w = fabsf(x+0.0F)-fabsf(y+0.0F);
+	       w = fabsl(x+0.0L)-fabsf(y+0);
 	       if(ha == 0x7f800000) w = a;
 	       if(hb == 0x7f800000) w = b;
 	       return w;
diff --git a/libm/upstream-freebsd/lib/msun/src/e_hypotl.c b/libm/upstream-freebsd/lib/msun/src/e_hypotl.c
index 7b5ab89..5603b6e 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_hypotl.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_hypotl.c
@@ -11,7 +11,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_hypotl.c 336362 2018-07-17 07:42:14Z bde $");
 
 /* long double version of hypot().  See e_hypot.c for most comments. */
 
@@ -64,7 +64,7 @@
 	   if(ha >= ESW(MAX_EXP)) {	/* Inf or NaN */
 	       man_t manh, manl;
 	       /* Use original arg order iff result is NaN; quieten sNaNs. */
-	       w = fabsl(x+0.0)-fabsl(y+0.0);
+	       w = fabsl(x+0.0L)-fabsl(y+0);
 	       GET_LDBL_MAN(manh,manl,a);
 	       if (manh == LDBL_NBIT && manl == 0) w = a;
 	       GET_LDBL_MAN(manh,manl,b);
diff --git a/libm/upstream-freebsd/lib/msun/src/e_j0.c b/libm/upstream-freebsd/lib/msun/src/e_j0.c
index 36e72c2..cfa71c2 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_j0.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_j0.c
@@ -1,4 +1,3 @@
-
 /* @(#)e_j0.c 1.3 95/01/18 */
 /*
  * ====================================================
@@ -6,13 +5,13 @@
  *
  * Developed at SunSoft, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_j0.c 283032 2015-05-17 16:27:06Z kargl $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_j0.c 336089 2018-07-08 16:26:13Z markj $");
 
 /* __ieee754_j0(x), __ieee754_y0(x)
  * Bessel function of the first and second kinds of order zero.
@@ -33,20 +32,20 @@
  * 	   (To avoid cancellation, use
  *		sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
  * 	    to compute the worse one.)
- *	   
+ *
  *	3 Special cases
  *		j0(nan)= nan
  *		j0(0) = 1
  *		j0(inf) = 0
- *		
+ *
  * Method -- y0(x):
  *	1. For x<2.
- *	   Since 
+ *	   Since
  *		y0(x) = 2/pi*(j0(x)*(ln(x/2)+Euler) + x^2/4 - ...)
  *	   therefore y0(x)-2/pi*j0(x)*ln(x) is an even function.
  *	   We use the following function to approximate y0,
  *		y0(x) = U(z)/V(z) + (2/pi)*(j0(x)*ln(x)), z= x^2
- *	   where 
+ *	   where
  *		U(z) = u00 + u01*z + ... + u06*z^6
  *		V(z) = 1  + v01*z + ... + v04*z^4
  *	   with absolute approximation error bounded by 2**-72.
@@ -71,7 +70,7 @@
 one	= 1.0,
 invsqrtpi=  5.64189583547756279280e-01, /* 0x3FE20DD7, 0x50429B6D */
 tpi      =  6.36619772367581382433e-01, /* 0x3FE45F30, 0x6DC9C883 */
- 		/* R0/S0 on [0, 2.00] */
+/* R0/S0 on [0, 2.00] */
 R02  =  1.56249999999999947958e-02, /* 0x3F8FFFFF, 0xFFFFFFFD */
 R03  = -1.89979294238854721751e-04, /* 0xBF28E6A5, 0xB61AC6E9 */
 R04  =  1.82954049532700665670e-06, /* 0x3EBEB1D1, 0x0C503919 */
@@ -157,7 +156,7 @@
 	 * y0(Inf) = 0.
 	 * y0(-Inf) = NaN and raise invalid exception.
 	 */
-	if(ix>=0x7ff00000) return vone/(x+x*x); 
+	if(ix>=0x7ff00000) return vone/(x+x*x);
 	/* y0(+-0) = -inf and raise divide-by-zero exception. */
 	if((ix|lx)==0) return -one/vzero;
 	/* y0(x<0) = NaN and raise invalid exception. */
@@ -293,7 +292,7 @@
 	s = one+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*q[4]))));
 	return one+ r/s;
 }
-		
+
 
 /* For x >= 8, the asymptotic expansions of qzero is
  *	-1/8 s + 75/1024 s^3 - ..., where s = 1/x.
diff --git a/libm/upstream-freebsd/lib/msun/src/e_j1.c b/libm/upstream-freebsd/lib/msun/src/e_j1.c
index b11ac2d..78bb329 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_j1.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_j1.c
@@ -1,4 +1,3 @@
-
 /* @(#)e_j1.c 1.3 95/01/18 */
 /*
  * ====================================================
@@ -6,13 +5,13 @@
  *
  * Developed at SunSoft, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_j1.c 283032 2015-05-17 16:27:06Z kargl $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_j1.c 336089 2018-07-08 16:26:13Z markj $");
 
 /* __ieee754_j1(x), __ieee754_y1(x)
  * Bessel function of the first and second kinds of order zero.
@@ -34,16 +33,16 @@
  * 	   (To avoid cancellation, use
  *		sin(x) +- cos(x) = -cos(2x)/(sin(x) -+ cos(x))
  * 	    to compute the worse one.)
- *	   
+ *
  *	3 Special cases
  *		j1(nan)= nan
  *		j1(0) = 0
  *		j1(inf) = 0
- *		
+ *
  * Method -- y1(x):
- *	1. screen out x<=0 cases: y1(0)=-inf, y1(x<0)=NaN 
+ *	1. screen out x<=0 cases: y1(0)=-inf, y1(x<0)=NaN
  *	2. For x<2.
- *	   Since 
+ *	   Since
  *		y1(x) = 2/pi*(j1(x)*(ln(x/2)+Euler)-1/x-x/2+5/64*x^3-...)
  *	   therefore y1(x)-2/pi*j1(x)*ln(x)-1/x is an odd function.
  *	   We use the following function to approximate y1,
@@ -154,7 +153,7 @@
 	 * y1(Inf) = 0.
 	 * y1(-Inf) = NaN and raise invalid exception.
 	 */
-	if(ix>=0x7ff00000) return  vone/(x+x*x); 
+	if(ix>=0x7ff00000) return  vone/(x+x*x);
 	/* y1(+-0) = -inf and raise divide-by-zero exception. */
         if((ix|lx)==0) return -one/vzero;
 	/* y1(x<0) = NaN and raise invalid exception. */
@@ -186,10 +185,10 @@
                     z = invsqrtpi*(u*ss+v*cc)/sqrt(x);
                 }
                 return z;
-        } 
+        }
         if(ix<=0x3c900000) {    /* x < 2**-54 */
             return(-tpi/x);
-        } 
+        }
         z = x*x;
         u = U0[0]+z*(U0[1]+z*(U0[2]+z*(U0[3]+z*U0[4])));
         v = one+z*(V0[0]+z*(V0[1]+z*(V0[2]+z*(V0[3]+z*V0[4]))));
@@ -287,7 +286,7 @@
         s = one+z*(q[0]+z*(q[1]+z*(q[2]+z*(q[3]+z*q[4]))));
         return one+ r/s;
 }
-		
+
 
 /* For x >= 8, the asymptotic expansions of qone is
  *	3/8 s - 105/1024 s^3 - ..., where s = 1/x.
diff --git a/libm/upstream-freebsd/lib/msun/src/e_j1f.c b/libm/upstream-freebsd/lib/msun/src/e_j1f.c
index 0cca823..3abe201 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_j1f.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_j1f.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_j1f.c 283032 2015-05-17 16:27:06Z kargl $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_j1f.c 336089 2018-07-08 16:26:13Z markj $");
 
 /*
  * See e_j1.c for complete comments.
@@ -32,7 +32,7 @@
 one	= 1.0,
 invsqrtpi=  5.6418961287e-01, /* 0x3f106ebb */
 tpi      =  6.3661974669e-01, /* 0x3f22f983 */
-	/* R0/S0 on [0,2] */
+/* R0/S0 on [0,2] */
 r00  = -6.2500000000e-02, /* 0xbd800000 */
 r01  =  1.4070566976e-03, /* 0x3ab86cfd */
 r02  = -1.5995563444e-05, /* 0xb7862e36 */
diff --git a/libm/upstream-freebsd/lib/msun/src/e_jn.c b/libm/upstream-freebsd/lib/msun/src/e_jn.c
index a1130c5..58ec905 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_jn.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_jn.c
@@ -1,4 +1,3 @@
-
 /* @(#)e_jn.c 1.4 95/01/18 */
 /*
  * ====================================================
@@ -6,19 +5,19 @@
  *
  * Developed at SunSoft, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_jn.c 279856 2015-03-10 17:10:54Z kargl $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_jn.c 336089 2018-07-08 16:26:13Z markj $");
 
 /*
  * __ieee754_jn(n, x), __ieee754_yn(n, x)
  * floating point Bessel's function of the 1st and 2nd kind
  * of order n
- *          
+ *
  * Special cases:
  *	y0(0)=y1(0)=yn(n,0) = -inf with division by zero signal;
  *	y0(-ve)=y1(-ve)=yn(n,-ve) are NaN with invalid signal.
@@ -37,7 +36,6 @@
  *	yn(n,x) is similar in all respects, except
  *	that forward recursion is used for all
  *	values of n>1.
- *	
  */
 
 #include "math.h"
@@ -66,7 +64,7 @@
 	ix = 0x7fffffff&hx;
     /* if J(n,NaN) is NaN */
 	if((ix|((u_int32_t)(lx|-lx))>>31)>0x7ff00000) return x+x;
-	if(n<0){		
+	if(n<0){
 		n = -n;
 		x = -x;
 		hx ^= 0x80000000;
@@ -77,14 +75,14 @@
 	x = fabs(x);
 	if((ix|lx)==0||ix>=0x7ff00000) 	/* if x is 0 or inf */
 	    b = zero;
-	else if((double)n<=x) {   
+	else if((double)n<=x) {
 		/* Safe to use J(n+1,x)=2n/x *J(n,x)-J(n-1,x) */
 	    if(ix>=0x52D00000) { /* x > 2**302 */
-    /* (x >> n**2) 
+    /* (x >> n**2)
      *	    Jn(x) = cos(x-(2n+1)*pi/4)*sqrt(2/x*pi)
      *	    Yn(x) = sin(x-(2n+1)*pi/4)*sqrt(2/x*pi)
-     *	    Let s=sin(x), c=cos(x), 
-     *		xn=x-(2n+1)*pi/4, sqt2 = sqrt(2),then
+     *	    Let s=sin(x), c=cos(x),
+     *		xn=x-(2n+1)*pi/4, sqt2 = sqrt(2), then
      *
      *		   n	sin(xn)*sqt2	cos(xn)*sqt2
      *		----------------------------------
@@ -100,7 +98,7 @@
 		    case 3: temp =  cos(x)-sin(x); break;
 		}
 		b = invsqrtpi*temp/sqrt(x);
-	    } else {	
+	    } else {
 	        a = __ieee754_j0(x);
 	        b = __ieee754_j1(x);
 	        for(i=1;i<n;i++){
@@ -111,7 +109,7 @@
 	    }
 	} else {
 	    if(ix<0x3e100000) {	/* x < 2**-29 */
-    /* x is tiny, return the first Taylor expansion of J(n,x) 
+    /* x is tiny, return the first Taylor expansion of J(n,x)
      * J(n,x) = 1/n!*(x/2)^n  - ...
      */
 		if(n>33)	/* underflow */
@@ -126,14 +124,14 @@
 		}
 	    } else {
 		/* use backward recurrence */
-		/* 			x      x^2      x^2       
+		/* 			x      x^2      x^2
 		 *  J(n,x)/J(n-1,x) =  ----   ------   ------   .....
 		 *			2n  - 2(n+1) - 2(n+2)
 		 *
-		 * 			1      1        1       
+		 * 			1      1        1
 		 *  (for large x)   =  ----  ------   ------   .....
 		 *			2n   2(n+1)   2(n+2)
-		 *			-- - ------ - ------ - 
+		 *			-- - ------ - ------ -
 		 *			 x     x         x
 		 *
 		 * Let w = 2n/x and h=2/x, then the above quotient
@@ -149,9 +147,9 @@
 		 * To determine how many terms needed, let
 		 * Q(0) = w, Q(1) = w(w+h) - 1,
 		 * Q(k) = (w+k*h)*Q(k-1) - Q(k-2),
-		 * When Q(k) > 1e4	good for single 
-		 * When Q(k) > 1e9	good for double 
-		 * When Q(k) > 1e17	good for quadruple 
+		 * When Q(k) > 1e4	good for single
+		 * When Q(k) > 1e9	good for double
+		 * When Q(k) > 1e17	good for quadruple
 		 */
 	    /* determine k */
 		double t,v;
@@ -237,11 +235,11 @@
 	if(n==1) return(sign*__ieee754_y1(x));
 	if(ix==0x7ff00000) return zero;
 	if(ix>=0x52D00000) { /* x > 2**302 */
-    /* (x >> n**2) 
+    /* (x >> n**2)
      *	    Jn(x) = cos(x-(2n+1)*pi/4)*sqrt(2/x*pi)
      *	    Yn(x) = sin(x-(2n+1)*pi/4)*sqrt(2/x*pi)
-     *	    Let s=sin(x), c=cos(x), 
-     *		xn=x-(2n+1)*pi/4, sqt2 = sqrt(2),then
+     *	    Let s=sin(x), c=cos(x),
+     *		xn=x-(2n+1)*pi/4, sqt2 = sqrt(2), then
      *
      *		   n	sin(xn)*sqt2	cos(xn)*sqt2
      *		----------------------------------
diff --git a/libm/upstream-freebsd/lib/msun/src/e_pow.c b/libm/upstream-freebsd/lib/msun/src/e_pow.c
index d088b41..411dd52 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_pow.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_pow.c
@@ -10,7 +10,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_pow.c 326482 2017-12-03 01:56:03Z emaste $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_pow.c 336362 2018-07-17 07:42:14Z bde $");
 
 /* __ieee754_pow(x,y) return x**y
  *
@@ -57,6 +57,7 @@
  * to produce the hexadecimal values shown.
  */
 
+#include <float.h>
 #include "math.h"
 #include "math_private.h"
 
@@ -65,6 +66,9 @@
 dp_h[] = { 0.0, 5.84962487220764160156e-01,}, /* 0x3FE2B803, 0x40000000 */
 dp_l[] = { 0.0, 1.35003920212974897128e-08,}, /* 0x3E4CFDEB, 0x43CFD006 */
 zero    =  0.0,
+half    =  0.5,
+qrtr    =  0.25,
+thrd    =  3.3333333333333331e-01, /* 0x3fd55555, 0x55555555 */
 one	=  1.0,
 two	=  2.0,
 two53	=  9007199254740992.0,	/* 0x43400000, 0x00000000 */
@@ -115,7 +119,7 @@
     /* y!=zero: result is NaN if either arg is NaN */
 	if(ix > 0x7ff00000 || ((ix==0x7ff00000)&&(lx!=0)) ||
 	   iy > 0x7ff00000 || ((iy==0x7ff00000)&&(ly!=0)))
-		return (x+0.0)+(y+0.0);
+	    return nan_mix(x, y);
 
     /* determine if y is an odd int when x < 0
      * yisint = 0	... y is not an integer
@@ -197,7 +201,7 @@
 	/* now |1-x| is tiny <= 2**-20, suffice to compute
 	   log(x) by x-x^2/2+x^3/3-x^4/4 */
 	    t = ax-one;		/* t has 20 trailing zeros */
-	    w = (t*t)*(0.5-t*(0.3333333333333333333333-t*0.25));
+	    w = (t*t)*(half-t*(thrd-t*qrtr));
 	    u = ivln2_h*t;	/* ivln2_h has 21 sig. bits */
 	    v = t*ivln2_l-w*ivln2;
 	    t1 = u+v;
@@ -234,9 +238,9 @@
 	    r = s2*s2*(L1+s2*(L2+s2*(L3+s2*(L4+s2*(L5+s2*L6)))));
 	    r += s_l*(s_h+ss);
 	    s2  = s_h*s_h;
-	    t_h = 3.0+s2+r;
+	    t_h = 3+s2+r;
 	    SET_LOW_WORD(t_h,0);
-	    t_l = r-((t_h-3.0)-s2);
+	    t_l = r-((t_h-3)-s2);
 	/* u+v = ss*(1+...) */
 	    u = s_h*t_h;
 	    v = s_l*t_h+t_l*ss;
@@ -247,7 +251,7 @@
 	    z_h = cp_h*p_h;		/* cp_h+cp_l = 2/(3*log2) */
 	    z_l = cp_l*p_h+p_l*cp+dp_l[k];
 	/* log2(ax) = (ss+..)*2/(3*log2) = n + dp_h + z_h + z_l */
-	    t = (double)n;
+	    t = n;
 	    t1 = (((z_h+z_l)+dp_h[k])+t);
 	    SET_LOW_WORD(t1,0);
 	    t2 = z_l-(((t1-t)-dp_h[k])-z_h);
@@ -304,3 +308,7 @@
 	else SET_HIGH_WORD(z,j);
 	return s*z;
 }
+
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(pow, powl);
+#endif
diff --git a/libm/upstream-freebsd/lib/msun/src/e_powf.c b/libm/upstream-freebsd/lib/msun/src/e_powf.c
index 5c46478..13dd4eb 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_powf.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_powf.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_powf.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include "math.h"
 #include "math_private.h"
@@ -24,6 +24,9 @@
 dp_h[] = { 0.0, 5.84960938e-01,}, /* 0x3f15c000 */
 dp_l[] = { 0.0, 1.56322085e-06,}, /* 0x35d1cfdc */
 zero    =  0.0,
+half    =  0.5,
+qrtr    =  0.25,
+thrd    =  3.33333343e-01, /* 0x3eaaaaab */
 one	=  1.0,
 two	=  2.0,
 two24	=  16777216.0,	/* 0x4b800000 */
@@ -73,7 +76,7 @@
     /* y!=zero: result is NaN if either arg is NaN */
 	if(ix > 0x7f800000 ||
 	   iy > 0x7f800000)
-		return (x+0.0F)+(y+0.0F);
+	    return nan_mix(x, y);
 
     /* determine if y is an odd int when x < 0
      * yisint = 0	... y is not an integer
@@ -138,7 +141,7 @@
 	/* now |1-x| is tiny <= 2**-20, suffice to compute
 	   log(x) by x-x^2/2+x^3/3-x^4/4 */
 	    t = ax-1;		/* t has 20 trailing zeros */
-	    w = (t*t)*((float)0.5-t*((float)0.333333333333-t*(float)0.25));
+	    w = (t*t)*(half-t*(thrd-t*qrtr));
 	    u = ivln2_h*t;	/* ivln2_h has 16 sig. bits */
 	    v = t*ivln2_l-w*ivln2;
 	    t1 = u+v;
@@ -177,10 +180,10 @@
 	    r = s2*s2*(L1+s2*(L2+s2*(L3+s2*(L4+s2*(L5+s2*L6)))));
 	    r += s_l*(s_h+s);
 	    s2  = s_h*s_h;
-	    t_h = (float)3.0+s2+r;
+	    t_h = 3+s2+r;
 	    GET_FLOAT_WORD(is,t_h);
 	    SET_FLOAT_WORD(t_h,is&0xfffff000);
-	    t_l = r-((t_h-(float)3.0)-s2);
+	    t_l = r-((t_h-3)-s2);
 	/* u+v = s*(1+...) */
 	    u = s_h*t_h;
 	    v = s_l*t_h+t_l*s;
@@ -192,7 +195,7 @@
 	    z_h = cp_h*p_h;		/* cp_h+cp_l = 2/(3*log2) */
 	    z_l = cp_l*p_h+p_l*cp+dp_l[k];
 	/* log2(ax) = (s+..)*2/(3*log2) = n + dp_h + z_h + z_l */
-	    t = (float)n;
+	    t = n;
 	    t1 = (((z_h+z_l)+dp_h[k])+t);
 	    GET_FLOAT_WORD(is,t1);
 	    SET_FLOAT_WORD(t1,is&0xfffff000);
diff --git a/libm/upstream-freebsd/lib/msun/src/e_remainder.c b/libm/upstream-freebsd/lib/msun/src/e_remainder.c
index 9be513b..334d282 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_remainder.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_remainder.c
@@ -12,7 +12,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_remainder.c 336663 2018-07-24 10:10:16Z bde $");
 
 /* __ieee754_remainder(x,p)
  * Return :                  
@@ -45,11 +45,11 @@
 	hx &= 0x7fffffff;
 
     /* purge off exception values */
-	if((hp|lp)==0) return (x*p)/(x*p); 	/* p = 0 */
-	if((hx>=0x7ff00000)||			/* x not finite */
+	if(((hp|lp)==0)||		 	/* p = 0 */
+	  (hx>=0x7ff00000)||			/* x not finite */
 	  ((hp>=0x7ff00000)&&			/* p is NaN */
 	  (((hp-0x7ff00000)|lp)!=0)))
-	    return ((long double)x*p)/((long double)x*p);
+	    return nan_mix_op(x, p, *)/nan_mix_op(x, p, *);
 
 
 	if (hp<=0x7fdfffff) x = __ieee754_fmod(x,p+p);	/* now x < 2p */
diff --git a/libm/upstream-freebsd/lib/msun/src/e_remainderf.c b/libm/upstream-freebsd/lib/msun/src/e_remainderf.c
index b0014ae..ba3e07a 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_remainderf.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_remainderf.c
@@ -14,7 +14,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_remainderf.c 336663 2018-07-24 10:10:16Z bde $");
 
 #include "math.h"
 #include "math_private.h"
@@ -36,10 +36,10 @@
 	hx &= 0x7fffffff;
 
     /* purge off exception values */
-	if(hp==0) return (x*p)/(x*p);	 	/* p = 0 */
-	if((hx>=0x7f800000)||			/* x not finite */
+	if((hp==0)||			 	/* p = 0 */
+	  (hx>=0x7f800000)||			/* x not finite */
 	  ((hp>0x7f800000)))			/* p is NaN */
-	    return ((long double)x*p)/((long double)x*p);
+	    return nan_mix_op(x, p, *)/nan_mix_op(x, p, *);
 
 
 	if (hp<=0x7effffff) x = __ieee754_fmodf(x,p+p);	/* now x < 2p */
diff --git a/libm/upstream-freebsd/lib/msun/src/math_private.h b/libm/upstream-freebsd/lib/msun/src/math_private.h
index 637a09a..bc3d516 100644
--- a/libm/upstream-freebsd/lib/msun/src/math_private.h
+++ b/libm/upstream-freebsd/lib/msun/src/math_private.h
@@ -11,7 +11,7 @@
 
 /*
  * from: @(#)fdlibm.h 5.1 93/09/24
- * $FreeBSD: head/lib/msun/src/math_private.h 319047 2017-05-28 06:13:38Z mmel $
+ * $FreeBSD: head/lib/msun/src/math_private.h 336663 2018-07-24 10:10:16Z bde $
  */
 
 #ifndef _MATH_PRIVATE_H_
@@ -48,6 +48,47 @@
 #define	IEEE_WORD_ORDER	BYTE_ORDER
 #endif
 
+/* A union which permits us to convert between a long double and
+   four 32 bit ints.  */
+
+#if IEEE_WORD_ORDER == BIG_ENDIAN
+
+typedef union
+{
+  long double value;
+  struct {
+    u_int32_t mswhi;
+    u_int32_t mswlo;
+    u_int32_t lswhi;
+    u_int32_t lswlo;
+  } parts32;
+  struct {
+    u_int64_t msw;
+    u_int64_t lsw;
+  } parts64;
+} ieee_quad_shape_type;
+
+#endif
+
+#if IEEE_WORD_ORDER == LITTLE_ENDIAN
+
+typedef union
+{
+  long double value;
+  struct {
+    u_int32_t lswlo;
+    u_int32_t lswhi;
+    u_int32_t mswlo;
+    u_int32_t mswhi;
+  } parts32;
+  struct {
+    u_int64_t lsw;
+    u_int64_t msw;
+  } parts64;
+} ieee_quad_shape_type;
+
+#endif
+
 #if IEEE_WORD_ORDER == BIG_ENDIAN
 
 typedef union
@@ -294,8 +335,9 @@
 
 /* Support switching the mode to FP_PE if necessary. */
 #if defined(__i386__) && !defined(NO_FPSETPREC)
-#define	ENTERI()				\
-	long double __retval;			\
+#define	ENTERI() ENTERIT(long double)
+#define	ENTERIT(returntype)			\
+	returntype __retval;			\
 	fp_prec_t __oprec;			\
 						\
 	if ((__oprec = fpgetprec()) != FP_PE)	\
@@ -318,6 +360,7 @@
 } while (0)
 #else
 #define	ENTERI()
+#define	ENTERIT(x)
 #define	RETURNI(x)	RETURNF(x)
 #define	ENTERV()
 #define	RETURNV()	return
@@ -435,6 +478,31 @@
  */
 void _scan_nan(uint32_t *__words, int __num_words, const char *__s);
 
+/*
+ * Mix 0, 1 or 2 NaNs.  First add 0 to each arg.  This normally just turns
+ * signaling NaNs into quiet NaNs by setting a quiet bit.  We do this
+ * because we want to never return a signaling NaN, and also because we
+ * don't want the quiet bit to affect the result.  Then mix the converted
+ * args using the specified operation.
+ *
+ * When one arg is NaN, the result is typically that arg quieted.  When both
+ * args are NaNs, the result is typically the quietening of the arg whose
+ * mantissa is largest after quietening.  When neither arg is NaN, the
+ * result may be NaN because it is indeterminate, or finite for subsequent
+ * construction of a NaN as the indeterminate 0.0L/0.0L.
+ *
+ * Technical complications: the result in bits after rounding to the final
+ * precision might depend on the runtime precision and/or on compiler
+ * optimizations, especially when different register sets are used for
+ * different precisions.  Try to make the result not depend on at least the
+ * runtime precision by always doing the main mixing step in long double
+ * precision.  Try to reduce dependencies on optimizations by adding the
+ * the 0's in different precisions (unless everything is in long double
+ * precision).
+ */
+#define	nan_mix(x, y)		(nan_mix_op((x), (y), +))
+#define	nan_mix_op(x, y, op)	(((x) + 0.0L) op ((y) + 0))
+
 #ifdef _COMPLEX_H
 
 /*
@@ -510,48 +578,116 @@
 
 #endif /* _COMPLEX_H */
  
-#ifdef __GNUCLIKE_ASM
+/*
+ * The rnint() family rounds to the nearest integer for a restricted range
+ * range of args (up to about 2**MANT_DIG).  We assume that the current
+ * rounding mode is FE_TONEAREST so that this can be done efficiently.
+ * Extra precision causes more problems in practice, and we only centralize
+ * this here to reduce those problems, and have not solved the efficiency
+ * problems.  The exp2() family uses a more delicate version of this that
+ * requires extracting bits from the intermediate value, so it is not
+ * centralized here and should copy any solution of the efficiency problems.
+ */
 
-/* Asm versions of some functions. */
+static inline double
+rnint(__double_t x)
+{
+	/*
+	 * This casts to double to kill any extra precision.  This depends
+	 * on the cast being applied to a double_t to avoid compiler bugs
+	 * (this is a cleaner version of STRICT_ASSIGN()).  This is
+	 * inefficient if there actually is extra precision, but is hard
+	 * to improve on.  We use double_t in the API to minimise conversions
+	 * for just calling here.  Note that we cannot easily change the
+	 * magic number to the one that works directly with double_t, since
+	 * the rounding precision is variable at runtime on x86 so the
+	 * magic number would need to be variable.  Assuming that the
+	 * rounding precision is always the default is too fragile.  This
+	 * and many other complications will move when the default is
+	 * changed to FP_PE.
+	 */
+	return ((double)(x + 0x1.8p52) - 0x1.8p52);
+}
 
-#ifdef __amd64__
+static inline float
+rnintf(__float_t x)
+{
+	/*
+	 * As for rnint(), except we could just call that to handle the
+	 * extra precision case, usually without losing efficiency.
+	 */
+	return ((float)(x + 0x1.8p23F) - 0x1.8p23F);
+}
+
+#ifdef LDBL_MANT_DIG
+/*
+ * The complications for extra precision are smaller for rnintl() since it
+ * can safely assume that the rounding precision has been increased from
+ * its default to FP_PE on x86.  We don't exploit that here to get small
+ * optimizations from limiting the rangle to double.  We just need it for
+ * the magic number to work with long doubles.  ld128 callers should use
+ * rnint() instead of this if possible.  ld80 callers should prefer
+ * rnintl() since for amd64 this avoids swapping the register set, while
+ * for i386 it makes no difference (assuming FP_PE), and for other arches
+ * it makes little difference.
+ */
+static inline long double
+rnintl(long double x)
+{
+	return (x + __CONCAT(0x1.8p, LDBL_MANT_DIG) / 2 -
+	    __CONCAT(0x1.8p, LDBL_MANT_DIG) / 2);
+}
+#endif /* LDBL_MANT_DIG */
+
+/*
+ * irint() and i64rint() give the same result as casting to their integer
+ * return type provided their arg is a floating point integer.  They can
+ * sometimes be more efficient because no rounding is required.
+ */
+#if (defined(amd64) || defined(__i386__)) && defined(__GNUCLIKE_ASM)
+#define	irint(x)						\
+    (sizeof(x) == sizeof(float) &&				\
+    sizeof(__float_t) == sizeof(long double) ? irintf(x) :	\
+    sizeof(x) == sizeof(double) &&				\
+    sizeof(__double_t) == sizeof(long double) ? irintd(x) :	\
+    sizeof(x) == sizeof(long double) ? irintl(x) : (int)(x))
+#else
+#define	irint(x)	((int)(x))
+#endif
+
+#define	i64rint(x)	((int64_t)(x))	/* only needed for ld128 so not opt. */
+
+#if defined(__i386__) && defined(__GNUCLIKE_ASM)
 static __inline int
-irint(double x)
+irintf(float x)
 {
 	int n;
 
-	asm("cvtsd2si %1,%0" : "=r" (n) : "x" (x));
+	__asm("fistl %0" : "=m" (n) : "t" (x));
 	return (n);
 }
-#define	HAVE_EFFICIENT_IRINT
-#endif
 
-#ifdef __i386__
 static __inline int
-irint(double x)
+irintd(double x)
 {
 	int n;
 
-	asm("fistl %0" : "=m" (n) : "t" (x));
+	__asm("fistl %0" : "=m" (n) : "t" (x));
 	return (n);
 }
-#define	HAVE_EFFICIENT_IRINT
 #endif
 
-#if defined(__amd64__) || defined(__i386__)
+#if (defined(__amd64__) || defined(__i386__)) && defined(__GNUCLIKE_ASM)
 static __inline int
 irintl(long double x)
 {
 	int n;
 
-	asm("fistl %0" : "=m" (n) : "t" (x));
+	__asm("fistl %0" : "=m" (n) : "t" (x));
 	return (n);
 }
-#define	HAVE_EFFICIENT_IRINTL
 #endif
 
-#endif /* __GNUCLIKE_ASM */
-
 #ifdef DEBUG
 #if defined(__amd64__) || defined(__i386__)
 #define	breakpoint()	asm("int $3")
diff --git a/libm/upstream-freebsd/lib/msun/src/s_ccosh.c b/libm/upstream-freebsd/lib/msun/src/s_ccosh.c
index 534f4b6..da568f4 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_ccosh.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_ccosh.c
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_ccosh.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_ccosh.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <math.h>
@@ -146,7 +146,8 @@
 	 * Optionally raises the invalid floating-point exception for finite
 	 * nonzero y.  Choice = don't raise (except for signaling NaNs).
 	 */
-	return (CMPLX((x * x) * (y - y), (x + x) * (y - y)));
+	return (CMPLX(((long double)x * x) * (y - y),
+	    ((long double)x + x) * (y - y)));
 }
 
 double complex
diff --git a/libm/upstream-freebsd/lib/msun/src/s_ccoshf.c b/libm/upstream-freebsd/lib/msun/src/s_ccoshf.c
index 3f4423e..4aeea63 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_ccoshf.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_ccoshf.c
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_ccoshf.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_ccoshf.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <math.h>
@@ -92,7 +92,8 @@
 		return (CMPLXF(INFINITY * cosf(y), x * sinf(y)));
 	}
 
-	return (CMPLXF((x * x) * (y - y), (x + x) * (y - y)));
+	return (CMPLXF(((long double)x * x) * (y - y),
+	    ((long double)x + x) * (y - y)));
 }
 
 float complex
diff --git a/libm/upstream-freebsd/lib/msun/src/s_clog.c b/libm/upstream-freebsd/lib/msun/src/s_clog.c
new file mode 100644
index 0000000..2c31095
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/src/s_clog.c
@@ -0,0 +1,155 @@
+/*-
+ * Copyright (c) 2013 Bruce D. Evans
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/src/s_clog.c 333577 2018-05-13 09:54:34Z kib $");
+
+#include <complex.h>
+#include <float.h>
+
+#include "fpmath.h"
+#include "math.h"
+#include "math_private.h"
+
+#define	MANT_DIG	DBL_MANT_DIG
+#define	MAX_EXP		DBL_MAX_EXP
+#define	MIN_EXP		DBL_MIN_EXP
+
+static const double
+ln2_hi = 6.9314718055829871e-1,		/*  0x162e42fefa0000.0p-53 */
+ln2_lo = 1.6465949582897082e-12;	/*  0x1cf79abc9e3b3a.0p-92 */
+
+double complex
+clog(double complex z)
+{
+	double_t ax, ax2h, ax2l, axh, axl, ay, ay2h, ay2l, ayh, ayl, sh, sl, t;
+	double x, y, v;
+	uint32_t hax, hay;
+	int kx, ky;
+
+	x = creal(z);
+	y = cimag(z);
+	v = atan2(y, x);
+
+	ax = fabs(x);
+	ay = fabs(y);
+	if (ax < ay) {
+		t = ax;
+		ax = ay;
+		ay = t;
+	}
+
+	GET_HIGH_WORD(hax, ax);
+	kx = (hax >> 20) - 1023;
+	GET_HIGH_WORD(hay, ay);
+	ky = (hay >> 20) - 1023;
+
+	/* Handle NaNs and Infs using the general formula. */
+	if (kx == MAX_EXP || ky == MAX_EXP)
+		return (CMPLX(log(hypot(x, y)), v));
+
+	/* Avoid spurious underflow, and reduce inaccuracies when ax is 1. */
+	if (ax == 1) {
+		if (ky < (MIN_EXP - 1) / 2)
+			return (CMPLX((ay / 2) * ay, v));
+		return (CMPLX(log1p(ay * ay) / 2, v));
+	}
+
+	/* Avoid underflow when ax is not small.  Also handle zero args. */
+	if (kx - ky > MANT_DIG || ay == 0)
+		return (CMPLX(log(ax), v));
+
+	/* Avoid overflow. */
+	if (kx >= MAX_EXP - 1)
+		return (CMPLX(log(hypot(x * 0x1p-1022, y * 0x1p-1022)) +
+		    (MAX_EXP - 2) * ln2_lo + (MAX_EXP - 2) * ln2_hi, v));
+	if (kx >= (MAX_EXP - 1) / 2)
+		return (CMPLX(log(hypot(x, y)), v));
+
+	/* Reduce inaccuracies and avoid underflow when ax is denormal. */
+	if (kx <= MIN_EXP - 2)
+		return (CMPLX(log(hypot(x * 0x1p1023, y * 0x1p1023)) +
+		    (MIN_EXP - 2) * ln2_lo + (MIN_EXP - 2) * ln2_hi, v));
+
+	/* Avoid remaining underflows (when ax is small but not denormal). */
+	if (ky < (MIN_EXP - 1) / 2 + MANT_DIG)
+		return (CMPLX(log(hypot(x, y)), v));
+
+	/* Calculate ax*ax and ay*ay exactly using Dekker's algorithm. */
+	t = (double)(ax * (0x1p27 + 1));
+	axh = (double)(ax - t) + t;
+	axl = ax - axh;
+	ax2h = ax * ax;
+	ax2l = axh * axh - ax2h + 2 * axh * axl + axl * axl;
+	t = (double)(ay * (0x1p27 + 1));
+	ayh = (double)(ay - t) + t;
+	ayl = ay - ayh;
+	ay2h = ay * ay;
+	ay2l = ayh * ayh - ay2h + 2 * ayh * ayl + ayl * ayl;
+
+	/*
+	 * When log(|z|) is far from 1, accuracy in calculating the sum
+	 * of the squares is not very important since log() reduces
+	 * inaccuracies.  We depended on this to use the general
+	 * formula when log(|z|) is very far from 1.  When log(|z|) is
+	 * moderately far from 1, we go through the extra-precision
+	 * calculations to reduce branches and gain a little accuracy.
+	 *
+	 * When |z| is near 1, we subtract 1 and use log1p() and don't
+	 * leave it to log() to subtract 1, since we gain at least 1 bit
+	 * of accuracy in this way.
+	 *
+	 * When |z| is very near 1, subtracting 1 can cancel almost
+	 * 3*MANT_DIG bits.  We arrange that subtracting 1 is exact in
+	 * doubled precision, and then do the rest of the calculation
+	 * in sloppy doubled precision.  Although large cancellations
+	 * often lose lots of accuracy, here the final result is exact
+	 * in doubled precision if the large calculation occurs (because
+	 * then it is exact in tripled precision and the cancellation
+	 * removes enough bits to fit in doubled precision).  Thus the
+	 * result is accurate in sloppy doubled precision, and the only
+	 * significant loss of accuracy is when it is summed and passed
+	 * to log1p().
+	 */
+	sh = ax2h;
+	sl = ay2h;
+	_2sumF(sh, sl);
+	if (sh < 0.5 || sh >= 3)
+		return (CMPLX(log(ay2l + ax2l + sl + sh) / 2, v));
+	sh -= 1;
+	_2sum(sh, sl);
+	_2sum(ax2l, ay2l);
+	/* Briggs-Kahan algorithm (except we discard the final low term): */
+	_2sum(sh, ax2l);
+	_2sum(sl, ay2l);
+	t = ax2l + sl;
+	_2sumF(sh, t);
+	return (CMPLX(log1p(ay2l + t + sh) / 2, v));
+}
+
+#if (LDBL_MANT_DIG == 53)
+__weak_reference(clog, clogl);
+#endif
diff --git a/libm/upstream-freebsd/lib/msun/src/s_clogf.c b/libm/upstream-freebsd/lib/msun/src/s_clogf.c
new file mode 100644
index 0000000..d94977d
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/src/s_clogf.c
@@ -0,0 +1,151 @@
+/*-
+ * Copyright (c) 2013 Bruce D. Evans
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/src/s_clogf.c 333577 2018-05-13 09:54:34Z kib $");
+
+#include <complex.h>
+#include <float.h>
+
+#include "fpmath.h"
+#include "math.h"
+#include "math_private.h"
+
+#define	MANT_DIG	FLT_MANT_DIG
+#define	MAX_EXP		FLT_MAX_EXP
+#define	MIN_EXP		FLT_MIN_EXP
+
+static const float
+ln2f_hi =  6.9314575195e-1,		/*  0xb17200.0p-24 */
+ln2f_lo =  1.4286067653e-6;		/*  0xbfbe8e.0p-43 */
+
+float complex
+clogf(float complex z)
+{
+	float_t ax, ax2h, ax2l, axh, axl, ay, ay2h, ay2l, ayh, ayl, sh, sl, t;
+	float x, y, v;
+	uint32_t hax, hay;
+	int kx, ky;
+
+	x = crealf(z);
+	y = cimagf(z);
+	v = atan2f(y, x);
+
+	ax = fabsf(x);
+	ay = fabsf(y);
+	if (ax < ay) {
+		t = ax;
+		ax = ay;
+		ay = t;
+	}
+
+	GET_FLOAT_WORD(hax, ax);
+	kx = (hax >> 23) - 127;
+	GET_FLOAT_WORD(hay, ay);
+	ky = (hay >> 23) - 127;
+
+	/* Handle NaNs and Infs using the general formula. */
+	if (kx == MAX_EXP || ky == MAX_EXP)
+		return (CMPLXF(logf(hypotf(x, y)), v));
+
+	/* Avoid spurious underflow, and reduce inaccuracies when ax is 1. */
+	if (hax == 0x3f800000) {
+		if (ky < (MIN_EXP - 1) / 2)
+			return (CMPLXF((ay / 2) * ay, v));
+		return (CMPLXF(log1pf(ay * ay) / 2, v));
+	}
+
+	/* Avoid underflow when ax is not small.  Also handle zero args. */
+	if (kx - ky > MANT_DIG || hay == 0)
+		return (CMPLXF(logf(ax), v));
+
+	/* Avoid overflow. */
+	if (kx >= MAX_EXP - 1)
+		return (CMPLXF(logf(hypotf(x * 0x1p-126F, y * 0x1p-126F)) +
+		    (MAX_EXP - 2) * ln2f_lo + (MAX_EXP - 2) * ln2f_hi, v));
+	if (kx >= (MAX_EXP - 1) / 2)
+		return (CMPLXF(logf(hypotf(x, y)), v));
+
+	/* Reduce inaccuracies and avoid underflow when ax is denormal. */
+	if (kx <= MIN_EXP - 2)
+		return (CMPLXF(logf(hypotf(x * 0x1p127F, y * 0x1p127F)) +
+		    (MIN_EXP - 2) * ln2f_lo + (MIN_EXP - 2) * ln2f_hi, v));
+
+	/* Avoid remaining underflows (when ax is small but not denormal). */
+	if (ky < (MIN_EXP - 1) / 2 + MANT_DIG)
+		return (CMPLXF(logf(hypotf(x, y)), v));
+
+	/* Calculate ax*ax and ay*ay exactly using Dekker's algorithm. */
+	t = (float)(ax * (0x1p12F + 1));
+	axh = (float)(ax - t) + t;
+	axl = ax - axh;
+	ax2h = ax * ax;
+	ax2l = axh * axh - ax2h + 2 * axh * axl + axl * axl;
+	t = (float)(ay * (0x1p12F + 1));
+	ayh = (float)(ay - t) + t;
+	ayl = ay - ayh;
+	ay2h = ay * ay;
+	ay2l = ayh * ayh - ay2h + 2 * ayh * ayl + ayl * ayl;
+
+	/*
+	 * When log(|z|) is far from 1, accuracy in calculating the sum
+	 * of the squares is not very important since log() reduces
+	 * inaccuracies.  We depended on this to use the general
+	 * formula when log(|z|) is very far from 1.  When log(|z|) is
+	 * moderately far from 1, we go through the extra-precision
+	 * calculations to reduce branches and gain a little accuracy.
+	 *
+	 * When |z| is near 1, we subtract 1 and use log1p() and don't
+	 * leave it to log() to subtract 1, since we gain at least 1 bit
+	 * of accuracy in this way.
+	 *
+	 * When |z| is very near 1, subtracting 1 can cancel almost
+	 * 3*MANT_DIG bits.  We arrange that subtracting 1 is exact in
+	 * doubled precision, and then do the rest of the calculation
+	 * in sloppy doubled precision.  Although large cancellations
+	 * often lose lots of accuracy, here the final result is exact
+	 * in doubled precision if the large calculation occurs (because
+	 * then it is exact in tripled precision and the cancellation
+	 * removes enough bits to fit in doubled precision).  Thus the
+	 * result is accurate in sloppy doubled precision, and the only
+	 * significant loss of accuracy is when it is summed and passed
+	 * to log1p().
+	 */
+	sh = ax2h;
+	sl = ay2h;
+	_2sumF(sh, sl);
+	if (sh < 0.5F || sh >= 3)
+		return (CMPLXF(logf(ay2l + ax2l + sl + sh) / 2, v));
+	sh -= 1;
+	_2sum(sh, sl);
+	_2sum(ax2l, ay2l);
+	/* Briggs-Kahan algorithm (except we discard the final low term): */
+	_2sum(sh, ax2l);
+	_2sum(sl, ay2l);
+	t = ax2l + sl;
+	_2sumF(sh, t);
+	return (CMPLXF(log1pf(ay2l + t + sh) / 2, v));
+}
diff --git a/libm/upstream-freebsd/lib/msun/src/s_clogl.c b/libm/upstream-freebsd/lib/msun/src/s_clogl.c
new file mode 100644
index 0000000..9f56ca3
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/src/s_clogl.c
@@ -0,0 +1,168 @@
+/*-
+ * Copyright (c) 2013 Bruce D. Evans
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/src/s_clogl.c 333577 2018-05-13 09:54:34Z kib $");
+
+#include <complex.h>
+#include <float.h>
+#ifdef __i386__
+#include <ieeefp.h>
+#endif
+
+#include "fpmath.h"
+#include "math.h"
+#include "math_private.h"
+
+#define	MANT_DIG	LDBL_MANT_DIG
+#define	MAX_EXP		LDBL_MAX_EXP
+#define	MIN_EXP		LDBL_MIN_EXP
+
+static const double
+ln2_hi = 6.9314718055829871e-1;		/*  0x162e42fefa0000.0p-53 */
+
+#if LDBL_MANT_DIG == 64
+#define	MULT_REDUX	0x1p32		/* exponent MANT_DIG / 2 rounded up */
+static const double
+ln2l_lo = 1.6465949582897082e-12;	/*  0x1cf79abc9e3b3a.0p-92 */
+#elif LDBL_MANT_DIG == 113
+#define	MULT_REDUX	0x1p57
+static const long double
+ln2l_lo = 1.64659495828970812809844307550013433e-12L;	/*  0x1cf79abc9e3b39803f2f6af40f343.0p-152L */
+#else
+#error "Unsupported long double format"
+#endif
+
+long double complex
+clogl(long double complex z)
+{
+	long double ax, ax2h, ax2l, axh, axl, ay, ay2h, ay2l, ayh, ayl;
+	long double sh, sl, t;
+	long double x, y, v;
+	uint16_t hax, hay;
+	int kx, ky;
+
+	ENTERIT(long double complex);
+
+	x = creall(z);
+	y = cimagl(z);
+	v = atan2l(y, x);
+
+	ax = fabsl(x);
+	ay = fabsl(y);
+	if (ax < ay) {
+		t = ax;
+		ax = ay;
+		ay = t;
+	}
+
+	GET_LDBL_EXPSIGN(hax, ax);
+	kx = hax - 16383;
+	GET_LDBL_EXPSIGN(hay, ay);
+	ky = hay - 16383;
+
+	/* Handle NaNs and Infs using the general formula. */
+	if (kx == MAX_EXP || ky == MAX_EXP)
+		RETURNI(CMPLXL(logl(hypotl(x, y)), v));
+
+	/* Avoid spurious underflow, and reduce inaccuracies when ax is 1. */
+	if (ax == 1) {
+		if (ky < (MIN_EXP - 1) / 2)
+			RETURNI(CMPLXL((ay / 2) * ay, v));
+		RETURNI(CMPLXL(log1pl(ay * ay) / 2, v));
+	}
+
+	/* Avoid underflow when ax is not small.  Also handle zero args. */
+	if (kx - ky > MANT_DIG || ay == 0)
+		RETURNI(CMPLXL(logl(ax), v));
+
+	/* Avoid overflow. */
+	if (kx >= MAX_EXP - 1)
+		RETURNI(CMPLXL(logl(hypotl(x * 0x1p-16382L, y * 0x1p-16382L)) +
+		    (MAX_EXP - 2) * ln2l_lo + (MAX_EXP - 2) * ln2_hi, v));
+	if (kx >= (MAX_EXP - 1) / 2)
+		RETURNI(CMPLXL(logl(hypotl(x, y)), v));
+
+	/* Reduce inaccuracies and avoid underflow when ax is denormal. */
+	if (kx <= MIN_EXP - 2)
+		RETURNI(CMPLXL(logl(hypotl(x * 0x1p16383L, y * 0x1p16383L)) +
+		    (MIN_EXP - 2) * ln2l_lo + (MIN_EXP - 2) * ln2_hi, v));
+
+	/* Avoid remaining underflows (when ax is small but not denormal). */
+	if (ky < (MIN_EXP - 1) / 2 + MANT_DIG)
+		RETURNI(CMPLXL(logl(hypotl(x, y)), v));
+
+	/* Calculate ax*ax and ay*ay exactly using Dekker's algorithm. */
+	t = (long double)(ax * (MULT_REDUX + 1));
+	axh = (long double)(ax - t) + t;
+	axl = ax - axh;
+	ax2h = ax * ax;
+	ax2l = axh * axh - ax2h + 2 * axh * axl + axl * axl;
+	t = (long double)(ay * (MULT_REDUX + 1));
+	ayh = (long double)(ay - t) + t;
+	ayl = ay - ayh;
+	ay2h = ay * ay;
+	ay2l = ayh * ayh - ay2h + 2 * ayh * ayl + ayl * ayl;
+
+	/*
+	 * When log(|z|) is far from 1, accuracy in calculating the sum
+	 * of the squares is not very important since log() reduces
+	 * inaccuracies.  We depended on this to use the general
+	 * formula when log(|z|) is very far from 1.  When log(|z|) is
+	 * moderately far from 1, we go through the extra-precision
+	 * calculations to reduce branches and gain a little accuracy.
+	 *
+	 * When |z| is near 1, we subtract 1 and use log1p() and don't
+	 * leave it to log() to subtract 1, since we gain at least 1 bit
+	 * of accuracy in this way.
+	 *
+	 * When |z| is very near 1, subtracting 1 can cancel almost
+	 * 3*MANT_DIG bits.  We arrange that subtracting 1 is exact in
+	 * doubled precision, and then do the rest of the calculation
+	 * in sloppy doubled precision.  Although large cancellations
+	 * often lose lots of accuracy, here the final result is exact
+	 * in doubled precision if the large calculation occurs (because
+	 * then it is exact in tripled precision and the cancellation
+	 * removes enough bits to fit in doubled precision).  Thus the
+	 * result is accurate in sloppy doubled precision, and the only
+	 * significant loss of accuracy is when it is summed and passed
+	 * to log1p().
+	 */
+	sh = ax2h;
+	sl = ay2h;
+	_2sumF(sh, sl);
+	if (sh < 0.5 || sh >= 3)
+		RETURNI(CMPLXL(logl(ay2l + ax2l + sl + sh) / 2, v));
+	sh -= 1;
+	_2sum(sh, sl);
+	_2sum(ax2l, ay2l);
+	/* Briggs-Kahan algorithm (except we discard the final low term): */
+	_2sum(sh, ax2l);
+	_2sum(sl, ay2l);
+	t = ax2l + sl;
+	_2sumF(sh, t);
+	RETURNI(CMPLXL(log1pl(ay2l + t + sh) / 2, v));
+}
diff --git a/libm/upstream-freebsd/lib/msun/src/s_cpow.c b/libm/upstream-freebsd/lib/msun/src/s_cpow.c
new file mode 100644
index 0000000..9be5c51
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/src/s_cpow.c
@@ -0,0 +1,74 @@
+/*-
+ * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*							cpow
+ *
+ *	Complex power function
+ *
+ *
+ *
+ * SYNOPSIS:
+ *
+ * double complex cpow();
+ * double complex a, z, w;
+ *
+ * w = cpow (a, z);
+ *
+ *
+ *
+ * DESCRIPTION:
+ *
+ * Raises complex A to the complex Zth power.
+ * Definition is per AMS55 # 4.2.8,
+ * analytically equivalent to cpow(a,z) = cexp(z clog(a)).
+ *
+ * ACCURACY:
+ *
+ *                      Relative error:
+ * arithmetic   domain     # trials      peak         rms
+ *    IEEE      -10,+10     30000       9.4e-15     1.5e-15
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/src/s_cpow.c 336299 2018-07-15 00:23:10Z mmacy $");
+
+#include <complex.h>
+#include <float.h>
+#include <math.h>
+
+double complex
+cpow(double complex a, double complex z)
+{
+	double complex w;
+	double x, y, r, theta, absa, arga;
+
+	x = creal (z);
+	y = cimag (z);
+	absa = cabs (a);
+	if (absa == 0.0) {
+		return (0.0 + 0.0 * I);
+	}
+	arga = carg (a);
+	r = pow (absa, x);
+	theta = x * arga;
+	if (y != 0.0) {
+		r = r * exp (-y * arga);
+		theta = theta + y * log (absa);
+	}
+	w = r * cos (theta) + (r * sin (theta)) * I;
+	return (w);
+}
diff --git a/libm/upstream-freebsd/lib/msun/src/s_cpowf.c b/libm/upstream-freebsd/lib/msun/src/s_cpowf.c
new file mode 100644
index 0000000..6e27f57
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/src/s_cpowf.c
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*							cpowf
+ *
+ *	Complex power function
+ *
+ *
+ *
+ * SYNOPSIS:
+ *
+ * float complex cpowf();
+ * float complex a, z, w;
+ *
+ * w = cpowf (a, z);
+ *
+ *
+ *
+ * DESCRIPTION:
+ *
+ * Raises complex A to the complex Zth power.
+ * Definition is per AMS55 # 4.2.8,
+ * analytically equivalent to cpow(a,z) = cexp(z clog(a)).
+ *
+ * ACCURACY:
+ *
+ *                      Relative error:
+ * arithmetic   domain     # trials      peak         rms
+ *    IEEE      -10,+10     30000       9.4e-15     1.5e-15
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/src/s_cpowf.c 336299 2018-07-15 00:23:10Z mmacy $");
+
+#include <complex.h>
+#include <math.h>
+
+float complex
+cpowf(float complex a, float complex z)
+{
+	float complex w;
+	float x, y, r, theta, absa, arga;
+
+	x = crealf(z);
+	y = cimagf(z);
+	absa = cabsf (a);
+	if (absa == 0.0f) {
+		return (0.0f + 0.0f * I);
+	}
+	arga = cargf (a);
+	r = powf (absa, x);
+	theta = x * arga;
+	if (y != 0.0f) {
+		r = r * expf (-y * arga);
+		theta = theta + y * logf (absa);
+	}
+	w = r * cosf (theta) + (r * sinf (theta)) * I;
+	return (w);
+}
diff --git a/libm/upstream-freebsd/lib/msun/src/s_cpowl.c b/libm/upstream-freebsd/lib/msun/src/s_cpowl.c
new file mode 100644
index 0000000..fcb5c7f
--- /dev/null
+++ b/libm/upstream-freebsd/lib/msun/src/s_cpowl.c
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*							cpowl
+ *
+ *	Complex power function
+ *
+ *
+ *
+ * SYNOPSIS:
+ *
+ * long double complex cpowl();
+ * long double complex a, z, w;
+ *
+ * w = cpowl (a, z);
+ *
+ *
+ *
+ * DESCRIPTION:
+ *
+ * Raises complex A to the complex Zth power.
+ * Definition is per AMS55 # 4.2.8,
+ * analytically equivalent to cpow(a,z) = cexp(z clog(a)).
+ *
+ * ACCURACY:
+ *
+ *                      Relative error:
+ * arithmetic   domain     # trials      peak         rms
+ *    IEEE      -10,+10     30000       9.4e-15     1.5e-15
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/msun/src/s_cpowl.c 336299 2018-07-15 00:23:10Z mmacy $");
+
+#include <complex.h>
+#include <math.h>
+
+long double complex
+cpowl(long double complex a, long double complex z)
+{
+	long double complex w;
+	long double x, y, r, theta, absa, arga;
+
+	x = creall(z);
+	y = cimagl(z);
+	absa = cabsl(a);
+	if (absa == 0.0L) {
+		return (0.0L + 0.0L * I);
+	}
+	arga = cargl(a);
+	r = powl(absa, x);
+	theta = x * arga;
+	if (y != 0.0L) {
+		r = r * expl(-y * arga);
+		theta = theta + y * logl(absa);
+	}
+	w = r * cosl(theta) + (r * sinl(theta)) * I;
+	return (w);
+}
diff --git a/libm/upstream-freebsd/lib/msun/src/s_csinh.c b/libm/upstream-freebsd/lib/msun/src/s_csinh.c
index 5f8380e..7408b13 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_csinh.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_csinh.c
@@ -39,7 +39,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_csinh.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_csinh.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <math.h>
@@ -145,7 +145,8 @@
 	 * Optionally raises the invalid floating-point exception for finite
 	 * nonzero y.  Choice = don't raise (except for signaling NaNs).
 	 */
-	return (CMPLX((x + x) * (y - y), (x * x) * (y - y)));
+	return (CMPLX(((long double)x + x) * (y - y),
+	    ((long double)x * x) * (y - y)));
 }
 
 double complex
diff --git a/libm/upstream-freebsd/lib/msun/src/s_csinhf.c b/libm/upstream-freebsd/lib/msun/src/s_csinhf.c
index 7f58b55..6e29f19 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_csinhf.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_csinhf.c
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_csinhf.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_csinhf.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <math.h>
@@ -92,7 +92,8 @@
 		return (CMPLXF(x * cosf(y), INFINITY * sinf(y)));
 	}
 
-	return (CMPLXF((x + x) * (y - y), (x * x) * (y - y)));
+	return (CMPLXF(((long double)x + x) * (y - y),
+	    ((long double)x * x) * (y - y)));
 }
 
 float complex
diff --git a/libm/upstream-freebsd/lib/msun/src/s_csqrt.c b/libm/upstream-freebsd/lib/msun/src/s_csqrt.c
index ad8ef4c..215b7d7 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_csqrt.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_csqrt.c
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrt.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrt.c 336488 2018-07-19 15:04:10Z bde $");
 
 #include <complex.h>
 #include <float.h>
@@ -35,25 +35,14 @@
 
 #include "math_private.h"
 
-/*
- * gcc doesn't implement complex multiplication or division correctly,
- * so we need to handle infinities specially. We turn on this pragma to
- * notify conforming c99 compilers that the fast-but-incorrect code that
- * gcc generates is acceptable, since the special cases have already been
- * handled.
- */
-#pragma	STDC CX_LIMITED_RANGE	ON
-
-/* We risk spurious overflow for components >= DBL_MAX / (1 + sqrt(2)). */
+/* For avoiding overflow for components >= DBL_MAX / (1 + sqrt(2)). */
 #define	THRESH	0x1.a827999fcef32p+1022
 
 double complex
 csqrt(double complex z)
 {
 	double complex result;
-	double a, b;
-	double t;
-	int scale;
+	double a, b, rx, ry, scale, t;
 
 	a = creal(z);
 	b = cimag(z);
@@ -65,7 +54,7 @@
 		return (CMPLX(INFINITY, b));
 	if (isnan(a)) {
 		t = (b - b) / (b - b);	/* raise invalid if b is not a NaN */
-		return (CMPLX(a, t));	/* return NaN + NaN i */
+		return (CMPLX(a + 0.0L + t, a + 0.0L + t)); /* NaN + NaN i */
 	}
 	if (isinf(a)) {
 		/*
@@ -79,34 +68,46 @@
 		else
 			return (CMPLX(a, copysign(b - b, b)));
 	}
-	/*
-	 * The remaining special case (b is NaN) is handled just fine by
-	 * the normal code path below.
-	 */
+	if (isnan(b)) {
+		t = (a - a) / (a - a);	/* raise invalid */
+		return (CMPLX(b + 0.0L + t, b + 0.0L + t)); /* NaN + NaN i */
+	}
 
 	/* Scale to avoid overflow. */
 	if (fabs(a) >= THRESH || fabs(b) >= THRESH) {
-		a *= 0.25;
-		b *= 0.25;
-		scale = 1;
+		/*
+		 * Don't scale a or b if this might give (spurious)
+		 * underflow.  Then the unscaled value is an equivalent
+		 * infinitesmal (or 0).
+		 */
+		if (fabs(a) >= 0x1p-1020)
+			a *= 0.25;
+		if (fabs(b) >= 0x1p-1020)
+			b *= 0.25;
+		scale = 2;
 	} else {
-		scale = 0;
+		scale = 1;
+	}
+
+	/* Scale to reduce inaccuracies when both components are denormal. */
+	if (fabs(a) < 0x1p-1022 && fabs(b) < 0x1p-1022) {
+		a *= 0x1p54;
+		b *= 0x1p54;
+		scale = 0x1p-27;
 	}
 
 	/* Algorithm 312, CACM vol 10, Oct 1967. */
 	if (a >= 0) {
 		t = sqrt((a + hypot(a, b)) * 0.5);
-		result = CMPLX(t, b / (2 * t));
+		rx = scale * t;
+		ry = scale * b / (2 * t);
 	} else {
 		t = sqrt((-a + hypot(a, b)) * 0.5);
-		result = CMPLX(fabs(b) / (2 * t), copysign(t, b));
+		rx = scale * fabs(b) / (2 * t);
+		ry = copysign(scale * t, b);
 	}
 
-	/* Rescale. */
-	if (scale)
-		return (result * 2);
-	else
-		return (result);
+	return (CMPLX(rx, ry));
 }
 
 #if LDBL_MANT_DIG == 53
diff --git a/libm/upstream-freebsd/lib/msun/src/s_csqrtf.c b/libm/upstream-freebsd/lib/msun/src/s_csqrtf.c
index 195e3b7..16d3266 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_csqrtf.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_csqrtf.c
@@ -27,27 +27,21 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrtf.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrtf.c 336412 2018-07-17 12:01:59Z bde $");
 
 #include <complex.h>
 #include <math.h>
 
 #include "math_private.h"
 
-/*
- * gcc doesn't implement complex multiplication or division correctly,
- * so we need to handle infinities specially. We turn on this pragma to
- * notify conforming c99 compilers that the fast-but-incorrect code that
- * gcc generates is acceptable, since the special cases have already been
- * handled.
- */
-#pragma	STDC CX_LIMITED_RANGE	ON
-
 float complex
 csqrtf(float complex z)
 {
-	float a = crealf(z), b = cimagf(z);
 	double t;
+	float a, b;
+
+	a = creal(z);
+	b = cimag(z);
 
 	/* Handle special cases. */
 	if (z == 0)
@@ -56,7 +50,7 @@
 		return (CMPLXF(INFINITY, b));
 	if (isnan(a)) {
 		t = (b - b) / (b - b);	/* raise invalid if b is not a NaN */
-		return (CMPLXF(a, t));	/* return NaN + NaN i */
+		return (CMPLXF(a + 0.0L + t, a + 0.0L + t)); /* NaN + NaN i */
 	}
 	if (isinf(a)) {
 		/*
@@ -70,10 +64,10 @@
 		else
 			return (CMPLXF(a, copysignf(b - b, b)));
 	}
-	/*
-	 * The remaining special case (b is NaN) is handled just fine by
-	 * the normal code path below.
-	 */
+	if (isnan(b)) {
+		t = (a - a) / (a - a);	/* raise invalid */
+		return (CMPLXF(b + 0.0L + t, b + 0.0L + t)); /* NaN + NaN i */
+	}
 
 	/*
 	 * We compute t in double precision to avoid overflow and to
@@ -82,9 +76,9 @@
 	 */
 	if (a >= 0) {
 		t = sqrt((a + hypot(a, b)) * 0.5);
-		return (CMPLXF(t, b / (2.0 * t)));
+		return (CMPLXF(t, b / (2 * t)));
 	} else {
 		t = sqrt((-a + hypot(a, b)) * 0.5);
-		return (CMPLXF(fabsf(b) / (2.0 * t), copysignf(t, b)));
+		return (CMPLXF(fabsf(b) / (2 * t), copysignf(t, b)));
 	}
 }
diff --git a/libm/upstream-freebsd/lib/msun/src/s_csqrtl.c b/libm/upstream-freebsd/lib/msun/src/s_csqrtl.c
index a975833..e58e4ae 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_csqrtl.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_csqrtl.c
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrtl.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_csqrtl.c 336488 2018-07-19 15:04:10Z bde $");
 
 #include <complex.h>
 #include <float.h>
@@ -36,32 +36,28 @@
 #include "math_private.h"
 
 /*
- * gcc doesn't implement complex multiplication or division correctly,
- * so we need to handle infinities specially. We turn on this pragma to
- * notify conforming c99 compilers that the fast-but-incorrect code that
- * gcc generates is acceptable, since the special cases have already been
- * handled.
- */
-#pragma	STDC CX_LIMITED_RANGE	ON
-
-/*
- * We risk spurious overflow for components >= LDBL_MAX / (1 + sqrt(2)).
- * Rather than determining the fully precise value at which we might
- * overflow, just use a threshold of approximately LDBL_MAX / 4.
+ * Several thresholds require a 15-bit exponent and also the usual bias.
+ * s_logl.c and e_hypotl have less hard-coding but end up requiring the
+ * same for the exponent and more for the mantissa.
  */
 #if LDBL_MAX_EXP != 0x4000
 #error "Unsupported long double format"
-#else
-#define	THRESH	0x1p16382L
 #endif
 
+/*
+ * Overflow must be avoided for components >= LDBL_MAX / (1 + sqrt(2)).
+ * The precise threshold is nontrivial to determine and spell, so use a
+ * lower threshold of approximaely LDBL_MAX / 4, and don't use LDBL_MAX
+ * to spell this since LDBL_MAX is broken on i386 (it overflows in 53-bit
+ * precision).
+ */
+#define	THRESH	0x1p16382L
+
 long double complex
 csqrtl(long double complex z)
 {
 	long double complex result;
-	long double a, b;
-	long double t;
-	int scale;
+	long double a, b, rx, ry, scale, t;
 
 	a = creall(z);
 	b = cimagl(z);
@@ -73,7 +69,7 @@
 		return (CMPLXL(INFINITY, b));
 	if (isnan(a)) {
 		t = (b - b) / (b - b);	/* raise invalid if b is not a NaN */
-		return (CMPLXL(a, t));	/* return NaN + NaN i */
+		return (CMPLXL(a + 0.0L + t, a + 0.0L + t)); /* NaN + NaN i */
 	}
 	if (isinf(a)) {
 		/*
@@ -87,32 +83,44 @@
 		else
 			return (CMPLXL(a, copysignl(b - b, b)));
 	}
-	/*
-	 * The remaining special case (b is NaN) is handled just fine by
-	 * the normal code path below.
-	 */
+	if (isnan(b)) {
+		t = (a - a) / (a - a);	/* raise invalid */
+		return (CMPLXL(b + 0.0L + t, b + 0.0L + t)); /* NaN + NaN i */
+	}
 
 	/* Scale to avoid overflow. */
 	if (fabsl(a) >= THRESH || fabsl(b) >= THRESH) {
-		a *= 0.25;
-		b *= 0.25;
-		scale = 1;
+		/*
+		 * Don't scale a or b if this might give (spurious)
+		 * underflow.  Then the unscaled value is an equivalent
+		 * infinitesmal (or 0).
+		 */
+		if (fabsl(a) >= 0x1p-16380L)
+			a *= 0.25;
+		if (fabsl(b) >= 0x1p-16380L)
+			b *= 0.25;
+		scale = 2;
 	} else {
-		scale = 0;
+		scale = 1;
+	}
+
+	/* Scale to reduce inaccuracies when both components are denormal. */
+	if (fabsl(a) < 0x1p-16382L && fabsl(b) < 0x1p-16382L) {
+		a *= 0x1p64;
+		b *= 0x1p64;
+		scale = 0x1p-32;
 	}
 
 	/* Algorithm 312, CACM vol 10, Oct 1967. */
 	if (a >= 0) {
 		t = sqrtl((a + hypotl(a, b)) * 0.5);
-		result = CMPLXL(t, b / (2 * t));
+		rx = scale * t;
+		ry = scale * b / (2 * t);
 	} else {
 		t = sqrtl((-a + hypotl(a, b)) * 0.5);
-		result = CMPLXL(fabsl(b) / (2 * t), copysignl(t, b));
+		rx = scale * fabsl(b) / (2 * t);
+		ry = copysignl(scale * t, b);
 	}
 
-	/* Rescale. */
-	if (scale)
-		return (result * 2);
-	else
-		return (result);
+	return (CMPLXL(rx, ry));
 }
diff --git a/libm/upstream-freebsd/lib/msun/src/s_ctanh.c b/libm/upstream-freebsd/lib/msun/src/s_ctanh.c
index bd16109..d005baf 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_ctanh.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_ctanh.c
@@ -66,7 +66,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_ctanh.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_ctanh.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <math.h>
@@ -104,8 +104,8 @@
 	 */
 	if (ix >= 0x7ff00000) {
 		if ((ix & 0xfffff) | lx)	/* x is NaN */
-			return (CMPLX((x + 0) * (y + 0),
-			    y == 0 ? y : (x + 0) * (y + 0)));
+			return (CMPLX(nan_mix(x, y),
+			    y == 0 ? y : nan_mix(x, y)));
 		SET_HIGH_WORD(x, hx - 0x40000000);	/* x = copysign(1, x) */
 		return (CMPLX(x, copysign(0, isinf(y) ? y : sin(y) * cos(y))));
 	}
diff --git a/libm/upstream-freebsd/lib/msun/src/s_ctanhf.c b/libm/upstream-freebsd/lib/msun/src/s_ctanhf.c
index 1124fc2..06825a3 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_ctanhf.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_ctanhf.c
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/s_ctanhf.c 326219 2017-11-26 02:00:33Z pfg $");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_ctanhf.c 336362 2018-07-17 07:42:14Z bde $");
 
 #include <complex.h>
 #include <math.h>
@@ -53,8 +53,8 @@
 
 	if (ix >= 0x7f800000) {
 		if (ix & 0x7fffff)
-			return (CMPLXF((x + 0) * (y + 0),
-			    y == 0 ? y : (x + 0) * (y + 0)));
+			return (CMPLXF(nan_mix(x, y),
+			    y == 0 ? y : nan_mix(x, y)));
 		SET_FLOAT_WORD(x, hx - 0x40000000);
 		return (CMPLXF(x,
 		    copysignf(0, isinf(y) ? y : sinf(y) * cosf(y))));
diff --git a/libm/upstream-freebsd/lib/msun/src/s_remquo.c b/libm/upstream-freebsd/lib/msun/src/s_remquo.c
index d811c69..be6a2e8 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_remquo.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_remquo.c
@@ -11,7 +11,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_remquo.c 336663 2018-07-24 10:10:16Z bde $");
 
 #include <float.h>
 
@@ -44,7 +44,7 @@
     /* purge off exception values */
 	if((hy|ly)==0||(hx>=0x7ff00000)||	/* y=0,or x not finite */
 	  ((hy|((ly|-ly)>>31))>0x7ff00000))	/* or y is NaN */
-	    return (x*y)/(x*y);
+	    return nan_mix_op(x, y, *)/nan_mix_op(x, y, *);
 	if(hx<=hy) {
 	    if((hx<hy)||(lx<ly)) {
 		q = 0;
diff --git a/libm/upstream-freebsd/lib/msun/src/s_remquof.c b/libm/upstream-freebsd/lib/msun/src/s_remquof.c
index f7b4c00..775672f 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_remquof.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_remquof.c
@@ -11,7 +11,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_remquof.c 336663 2018-07-24 10:10:16Z bde $");
 
 #include "math.h"
 #include "math_private.h"
@@ -41,7 +41,7 @@
 
     /* purge off exception values */
 	if(hy==0||hx>=0x7f800000||hy>0x7f800000) /* y=0,NaN;or x not finite */
-	    return (x*y)/(x*y);
+	    return nan_mix_op(x, y, *)/nan_mix_op(x, y, *);
 	if(hx<hy) {
 	    q = 0;
 	    goto fixup;	/* |x|<|y| return x or x-y */
diff --git a/libm/upstream-freebsd/lib/msun/src/s_remquol.c b/libm/upstream-freebsd/lib/msun/src/s_remquol.c
index 712651c..5ac13e4 100644
--- a/libm/upstream-freebsd/lib/msun/src/s_remquol.c
+++ b/libm/upstream-freebsd/lib/msun/src/s_remquol.c
@@ -11,7 +11,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/s_remquol.c 336665 2018-07-24 11:50:05Z bde $");
 
 #include <float.h>
 #include <stdint.h>
@@ -79,14 +79,13 @@
 	sxy = sx ^ uy.bits.sign;
 	ux.bits.sign = 0;	/* |x| */
 	uy.bits.sign = 0;	/* |y| */
-	x = ux.e;
 
     /* purge off exception values */
 	if((uy.bits.exp|uy.bits.manh|uy.bits.manl)==0 || /* y=0 */
 	   (ux.bits.exp == BIAS + LDBL_MAX_EXP) ||	 /* or x not finite */
 	   (uy.bits.exp == BIAS + LDBL_MAX_EXP &&
 	    ((uy.bits.manh&~LDBL_NBIT)|uy.bits.manl)!=0)) /* or y is NaN */
-	    return (x*y)/(x*y);
+	    return nan_mix_op(x, y, *)/nan_mix_op(x, y, *);
 	if(ux.bits.exp<=uy.bits.exp) {
 	    if((ux.bits.exp<uy.bits.exp) ||
 	       (ux.bits.manh<=uy.bits.manh &&
@@ -126,7 +125,6 @@
     /* fix point fmod */
 	n = ix - iy;
 	q = 0;
-
 	while(n--) {
 	    hz=hx-hy;lz=lx-ly; if(lx<ly) hz -= 1;
 	    if(hz<0){hx = hx+hx+(lx>>MANL_SHIFT); lx = lx+lx;}
@@ -154,9 +152,8 @@
 	} else {
 	    ux.bits.exp = iy + BIAS;
 	}
-	ux.bits.sign = 0;
-	x = ux.e;
 fixup:
+	x = ux.e;		/* |x| */
 	y = fabsl(y);
 	if (y < LDBL_MIN * 2) {
 	    if (x+x>y || (x+x==y && (q & 1))) {
@@ -167,11 +164,9 @@
 	    q++;
 	    x-=y;
 	}
-
 	ux.e = x;
 	ux.bits.sign ^= sx;
 	x = ux.e;
-
 	q &= 0x7fffffff;
 	*quo = (sxy ? -q : q);
 	return x;