Sync upstream FreeBSD libm.

Test: treehugger
Change-Id: I583a3e93821d512c975db34fc1610ffd22445d58
diff --git a/libm/upstream-freebsd/lib/msun/src/e_sinh.c b/libm/upstream-freebsd/lib/msun/src/e_sinh.c
index 6c01f4a..9fe8999 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_sinh.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_sinh.c
@@ -14,7 +14,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-/* __ieee754_sinh(x)
+/* sinh(x)
  * Method : 
  * mathematically sinh(x) if defined to be (exp(x)-exp(-x))/2
  *	1. Replace x by |x| (sinh(-x) = -sinh(x)). 
@@ -40,7 +40,7 @@
 static const double one = 1.0, shuge = 1.0e307;
 
 double
-__ieee754_sinh(double x)
+sinh(double x)
 {
 	double t,h;
 	int32_t ix,jx;
@@ -64,7 +64,7 @@
 	}
 
     /* |x| in [22, log(maxdouble)] return 0.5*exp(|x|) */
-	if (ix < 0x40862E42)  return h*__ieee754_exp(fabs(x));
+	if (ix < 0x40862E42)  return h*exp(fabs(x));
 
     /* |x| in [log(maxdouble), overflowthresold] */
 	if (ix<=0x408633CE)