Sync with upstream FreeBSD libm.

Change-Id: I97e9b23903f1d993d84825806065e85626007d31
diff --git a/libm/upstream-freebsd/lib/msun/src/k_exp.c b/libm/upstream-freebsd/lib/msun/src/k_exp.c
index f592f69..5aa3ef3 100644
--- a/libm/upstream-freebsd/lib/msun/src/k_exp.c
+++ b/libm/upstream-freebsd/lib/msun/src/k_exp.c
@@ -25,7 +25,7 @@
  */
 
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
+__FBSDID("$FreeBSD: head/lib/msun/src/k_exp.c 275819 2014-12-16 09:21:56Z ed $");
 
 #include <complex.h>
 
@@ -103,6 +103,6 @@
 	half_expt = expt - half_expt;
 	INSERT_WORDS(scale2, (0x3ff + half_expt) << 20, 0);
 
-	return (cpack(cos(y) * exp_x * scale1 * scale2,
+	return (CMPLX(cos(y) * exp_x * scale1 * scale2,
 	    sin(y) * exp_x * scale1 * scale2));
 }