Sync upstream FreeBSD libm.

Test: treehugger
Change-Id: I583a3e93821d512c975db34fc1610ffd22445d58
diff --git a/libm/upstream-freebsd/lib/msun/src/e_log10f.c b/libm/upstream-freebsd/lib/msun/src/e_log10f.c
index 9856df2..d0c3a53 100644
--- a/libm/upstream-freebsd/lib/msun/src/e_log10f.c
+++ b/libm/upstream-freebsd/lib/msun/src/e_log10f.c
@@ -31,7 +31,7 @@
 static volatile float vzero = 0.0;
 
 float
-__ieee754_log10f(float x)
+log10f(float x)
 {
 	float f,hfsq,hi,lo,r,y;
 	int32_t i,k,hx;