diff options
Diffstat (limited to 'sysdeps/ieee754/ldbl-128/e_gammal_r.c')
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/e_gammal_r.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sysdeps/ieee754/ldbl-128/e_gammal_r.c b/sysdeps/ieee754/ldbl-128/e_gammal_r.c index 6f0d4b7287..123b559d08 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 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2002 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. @@ -46,6 +46,12 @@ __ieee754_gammal_r (long double x, int *signgamp) *signgamp = 0; return (x - x) / (x - x); } + if (hx == 0xffff000000000000ULL && lx == 0) + { + /* x == -Inf. According to ISO this is NaN. */ + *signgamp = 0; + return x - x; + } /* XXX FIXME. */ return __ieee754_expl (__ieee754_lgammal_r (x, signgamp)); |