diff options
Diffstat (limited to 'sysdeps/libm-ieee754/e_gamma_r.c')
| -rw-r--r-- | sysdeps/libm-ieee754/e_gamma_r.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sysdeps/libm-ieee754/e_gamma_r.c b/sysdeps/libm-ieee754/e_gamma_r.c index 901f1451d2..bd802c24f1 100644 --- a/sysdeps/libm-ieee754/e_gamma_r.c +++ b/sysdeps/libm-ieee754/e_gamma_r.c @@ -1,5 +1,5 @@ /* Implementation of gamma function according to ISO C. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -34,11 +34,15 @@ __ieee754_gamma_r (double x, int *signgamp) EXTRACT_WORDS (hx, lx, x); if (((hx & 0x7fffffff) | lx) == 0) - /* Return value for x == 0 is NaN with invalid exception. */ - return x / x; + { + /* Return value for x == 0 is NaN with invalid exception. */ + *signgamp = 0; + return x / x; + } if (hx < 0 && (u_int32_t) hx < 0xfff00000 && __rint (x) == x) { /* Return value for integer x < 0 is NaN with invalid exception. */ + *signgamp = 0; return (x - x) / (x - x); } |