From 65c323f2acb531fdc7a380af88f3ac0c8e435c02 Mon Sep 17 00:00:00 2001
From: Tijl Coosemans <tijl@FreeBSD.org>
Date: Mon, 15 Jun 2015 20:47:26 +0000
Subject: [PATCH] Follow up to r284427: fix NaN mixing for ctanhf too.

---
 lib/msun/src/s_ctanhf.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/msun/src/s_ctanhf.c b/lib/msun/src/s_ctanhf.c
index 6f3be9768c12..520bf77d6d5c 100644
--- a/lib/msun/src/s_ctanhf.c
+++ b/lib/msun/src/s_ctanhf.c
@@ -51,7 +51,8 @@ ctanhf(float complex z)
 
 	if (ix >= 0x7f800000) {
 		if (ix & 0x7fffff)
-			return (CMPLXF(x, (y == 0 ? y : x * y)));
+			return (CMPLXF((x + 0) * (y + 0),
+			    y == 0 ? y : (x + 0) * (y + 0)));
 		SET_FLOAT_WORD(x, hx - 0x40000000);
 		return (CMPLXF(x,
 		    copysignf(0, isinf(y) ? y : sinf(y) * cosf(y))));