From: Szabolcs Nagy <nsz@port70.net>
Date: Tue, 13 Nov 2012 09:12:07 +0000 (+0100)
Subject: math: fix nextafter and nexttoward on maxdbl and maxflt input
X-Git-Tag: v0.9.8~44^2~7
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=662ed2006568f953290f5e0b40cce38252db78f4;p=oweals%2Fmusl.git

math: fix nextafter and nexttoward on maxdbl and maxflt input

old code (return x+x;) returns correct value and raises correct
flags only if the result is stored as double (or float)
---

diff --git a/src/math/nextafter.c b/src/math/nextafter.c
index a3b42c99..9ee82518 100644
--- a/src/math/nextafter.c
+++ b/src/math/nextafter.c
@@ -27,7 +27,7 @@ double nextafter(double x, double y)
 	e = ux.bits >> 52 & 0x7ff;
 	/* raise overflow if ux.value is infinite and x is finite */
 	if (e == 0x7ff)
-		return x + x;
+		FORCE_EVAL(x+x);
 	/* raise underflow if ux.value is subnormal or zero */
 	if (e == 0)
 		FORCE_EVAL(x*x + ux.value*ux.value);
diff --git a/src/math/nextafterf.c b/src/math/nextafterf.c
index b703487b..22b61dce 100644
--- a/src/math/nextafterf.c
+++ b/src/math/nextafterf.c
@@ -26,7 +26,7 @@ float nextafterf(float x, float y)
 	e = ux.bits & 0x7f800000;
 	/* raise overflow if ux.value is infinite and x is finite */
 	if (e == 0x7f800000)
-		return x + x;
+		FORCE_EVAL(x+x);
 	/* raise underflow if ux.value is subnormal or zero */
 	if (e == 0)
 		FORCE_EVAL(x*x + ux.value*ux.value);
diff --git a/src/math/nexttoward.c b/src/math/nexttoward.c
index 7355f2f1..6f32eca4 100644
--- a/src/math/nexttoward.c
+++ b/src/math/nexttoward.c
@@ -36,7 +36,7 @@ double nexttoward(double x, long double y)
 	e = ux.bits>>52 & 0x7ff;
 	/* raise overflow if ux.value is infinite and x is finite */
 	if (e == 0x7ff)
-		return x + x;
+		FORCE_EVAL(x+x);
 	/* raise underflow if ux.value is subnormal or zero */
 	if (e == 0)
 		FORCE_EVAL(x*x + ux.value*ux.value);
diff --git a/src/math/nexttowardf.c b/src/math/nexttowardf.c
index 8648be6a..9a693b1a 100644
--- a/src/math/nexttowardf.c
+++ b/src/math/nexttowardf.c
@@ -28,7 +28,7 @@ float nexttowardf(float x, long double y)
 	e = ux.bits & 0x7f800000;
 	/* raise overflow if ux.value is infinite and x is finite */
 	if (e == 0x7f800000)
-		return x + x;
+		FORCE_EVAL(x+x);
 	/* raise underflow if ux.value is subnormal or zero */
 	if (e == 0)
 		FORCE_EVAL(x*x + ux.value*ux.value);