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authorUlrich Drepper <drepper@redhat.com>2007-10-06 18:37:30 +0000
committerUlrich Drepper <drepper@redhat.com>2007-10-06 18:37:30 +0000
commitc039eedd66aff3706fede2188d920e173543b8e8 (patch)
tree7caae3bc57aa7ff2781e7e32c4dc4c8925ad096a /sysdeps/ieee754/flt-32
parent718946816cf60374f9d8f674d3ed649fdb33205a (diff)
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[BZ #4407]
	* sysdeps/ieee754/dbl-64/e_lgamma_r.c: Fix *signgamp for -0.0.
	* sysdeps/ieee754/flt-32/e_lgammaf_r.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_lgammal_r.c: Likewise.
	* math/libm-test.inc: Add test for this case.

	Half the patch by Christian Iseli <christian.iseli@licr.org>.
Diffstat (limited to 'sysdeps/ieee754/flt-32')
-rw-r--r--sysdeps/ieee754/flt-32/e_lgammaf_r.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/ieee754/flt-32/e_lgammaf_r.c b/sysdeps/ieee754/flt-32/e_lgammaf_r.c
index 5ebebb77af..0ed2610085 100644
--- a/sysdeps/ieee754/flt-32/e_lgammaf_r.c
+++ b/sysdeps/ieee754/flt-32/e_lgammaf_r.c
@@ -164,7 +164,12 @@ static float zero=  0.0000000000e+00;
 	*signgamp = 1;
 	ix = hx&0x7fffffff;
 	if(ix>=0x7f800000) return x*x;
-	if(ix==0) return one/fabsf(x);
+	if(ix==0)
+	  {
+	    if (hx < 0)
+	      *signgamp = -1;
+	    return one/fabsf(x);
+	  }
 	if(ix<0x1c800000) {	/* |x|<2**-70, return -log(|x|) */
 	    if(hx<0) {
 	        *signgamp = -1;