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authornsz <nsz@port70.net>2012-03-19 19:14:32 +0100
committernsz <nsz@port70.net>2012-03-19 19:14:32 +0100
commitc3587effe27a3ac8c1406f064b7705963be9887a (patch)
tree18b297ebc221d92e2f345b36ec3a3470e2ea24f6 /src
parenteca1c35e5be967478c8fe9381c6f4652b6645d5e (diff)
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minor fix in __tanl (get sign properly)
Diffstat (limited to 'src')
-rw-r--r--src/math/__tanl.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/math/__tanl.c b/src/math/__tanl.c
index e39e9df4..50ba2140 100644
--- a/src/math/__tanl.c
+++ b/src/math/__tanl.c
@@ -51,8 +51,7 @@ long double __tanl(long double x, long double y, int iy) {
 	int i;
 
 	iy = iy == 1 ? -1 : 1;        /* XXX recover original interface */
-	// FIXME: this is wrong, use copysign, signbit or union bithack
-	osign = x >= 0 ? 1.0 : -1.0;  /* XXX slow, probably wrong for -0 */
+	osign = copysignl(1.0, x);
 	if (fabsl(x) >= 0.67434) {
 		if (x < 0) {
 			x = -x;