Sync upstream FreeBSD libm.

Test: treehugger
Change-Id: I583a3e93821d512c975db34fc1610ffd22445d58
diff --git a/libm/upstream-freebsd/lib/msun/src/e_pow.c b/libm/upstream-freebsd/lib/msun/src/e_pow.c
index 52b2f5c..adc64c9 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_pow.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_pow.c
@@ -12,7 +12,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-/* __ieee754_pow(x,y) return x**y
+/* pow(x,y) return x**y
  *
  *		      n
  * Method:  Let x =  2   * (1+f)
@@ -98,7 +98,7 @@
 ivln2_l  =  1.92596299112661746887e-08; /* 0x3E54AE0B, 0xF85DDF44 =1/ln2 tail*/
 
 double
-__ieee754_pow(double x, double y)
+pow(double x, double y)
 {
 	double z,ax,z_h,z_l,p_h,p_l;
 	double y1,t1,t2,r,s,t,u,v,w;