From 52495f29a2e8519da83cbda0c21ad95405364705 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Sun, 21 Nov 2004 19:58:34 +0000
Subject: [BZ #552]

Update.
2004-11-20  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/ieee754/k_standard.c: Document code 50.
	(__kernel_standard) <case 50>: Avoid raising div-by-zero
	exception again.

2004-11-19  H.J. Lu  <hongjiu.lu@intel.com>

	[BZ #552]
	* math/libm-test.inc (tgamma_test): Update tgamma (0) and
	tgamma (-0).
	* sysdeps/generic/w_tgamma.c (__tgamma): Properly handle |x| == 0.
	* sysdeps/generic/w_tgammaf.c (__tgammaf): Likewise.
	* sysdeps/generic/w_tgammal.c (__tgammal): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r): Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c: Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c: Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c: Likewise.
	* sysdeps/ieee754/k_standard.c (__kernel_standard): Handle
	tgamma (0) and tgamma (-0).
---
 sysdeps/ieee754/ldbl-128/e_gammal_r.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'sysdeps/ieee754/ldbl-128')

diff --git a/sysdeps/ieee754/ldbl-128/e_gammal_r.c b/sysdeps/ieee754/ldbl-128/e_gammal_r.c
index 123b559d08..36f5d45881 100644
--- a/sysdeps/ieee754/ldbl-128/e_gammal_r.c
+++ b/sysdeps/ieee754/ldbl-128/e_gammal_r.c
@@ -1,5 +1,5 @@
 /* Implementation of gamma function according to ISO C.
-   Copyright (C) 1997, 1999, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1999, 2002, 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997 and
    		  Jakub Jelinek <jj@ultra.linux.cz, 1999.
@@ -36,9 +36,9 @@ __ieee754_gammal_r (long double x, int *signgamp)
 
   if (((hx & 0x7fffffffffffffffLL) | lx) == 0)
     {
-      /* Return value for x == 0 is NaN with invalid exception.  */
+      /* Return value for x == 0 is Inf with divide by zero exception.  */
       *signgamp = 0;
-      return x / x;
+      return 1.0 / x;
     }
   if (hx < 0 && (u_int64_t) hx < 0xffff000000000000ULL && __rintl (x) == x)
     {
-- 
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