libm: sync with upstream FreeBSD.

Bug: http://b/143311272
Test: ran tests
Change-Id: I0fbf94fb5cd13e64a55957d0f951757746d0367a
diff --git a/libm/upstream-freebsd/lib/msun/src/e_j1.c b/libm/upstream-freebsd/lib/msun/src/e_j1.c
index 78bb329..6d1c41c 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_j1.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_j1.c
@@ -11,7 +11,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: head/lib/msun/src/e_j1.c 336089 2018-07-08 16:26:13Z markj $");
+__FBSDID("$FreeBSD: head/lib/msun/src/e_j1.c 343953 2019-02-10 08:46:07Z peterj $");
 
 /* __ieee754_j1(x), __ieee754_y1(x)
  * Bessel function of the first and second kinds of order zero.
@@ -94,8 +94,7 @@
 	if(ix>=0x7ff00000) return one/x;
 	y = fabs(x);
 	if(ix >= 0x40000000) {	/* |x| >= 2.0 */
-		s = sin(y);
-		c = cos(y);
+		sincos(y, &s, &c);
 		ss = -s-c;
 		cc = s-c;
 		if(ix<0x7fe00000) {  /* make sure y+y not overflow */
@@ -159,8 +158,7 @@
 	/* y1(x<0) = NaN and raise invalid exception. */
         if(hx<0) return vzero/vzero;
         if(ix >= 0x40000000) {  /* |x| >= 2.0 */
-                s = sin(x);
-                c = cos(x);
+                sincos(x, &s, &c);
                 ss = -s-c;
                 cc = s-c;
                 if(ix<0x7fe00000) {  /* make sure x+x not overflow */