diff options
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/e_gamma_r.c | 6 | ||||
| -rw-r--r-- | sysdeps/ieee754/flt-32/e_gammaf_r.c | 6 | ||||
| -rw-r--r-- | sysdeps/ieee754/k_standard.c | 23 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/e_gammal_r.c | 6 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-96/e_gammal_r.c | 6 |
5 files changed, 32 insertions, 15 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_gamma_r.c b/sysdeps/ieee754/dbl-64/e_gamma_r.c index 4614bcf46e..f32309350c 100644 --- a/sysdeps/ieee754/dbl-64/e_gamma_r.c +++ b/sysdeps/ieee754/dbl-64/e_gamma_r.c @@ -1,5 +1,5 @@ /* Implementation of gamma function according to ISO C. - Copyright (C) 1997, 1999, 2001 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2001, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -35,9 +35,9 @@ __ieee754_gamma_r (double x, int *signgamp) if (((hx & 0x7fffffff) | 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_int32_t) hx < 0xfff00000 && __rint (x) == x) { diff --git a/sysdeps/ieee754/flt-32/e_gammaf_r.c b/sysdeps/ieee754/flt-32/e_gammaf_r.c index d484e0c288..926c84f368 100644 --- a/sysdeps/ieee754/flt-32/e_gammaf_r.c +++ b/sysdeps/ieee754/flt-32/e_gammaf_r.c @@ -1,5 +1,5 @@ /* Implementation of gamma function according to ISO C. - Copyright (C) 1997, 1999, 2001 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2001, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -34,9 +34,9 @@ __ieee754_gammaf_r (float x, int *signgamp) if ((hx & 0x7fffffff) == 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_int32_t) hx < 0xff800000 && __rintf (x) == x) { diff --git a/sysdeps/ieee754/k_standard.c b/sysdeps/ieee754/k_standard.c index 6def34bc0c..d8fa2a4493 100644 --- a/sysdeps/ieee754/k_standard.c +++ b/sysdeps/ieee754/k_standard.c @@ -90,6 +90,7 @@ static double zero = 0.0; /* used as const */ * 47-- exp10 underflow * 48-- log2(0) * 49-- log2(x<0) + * 50-- tgamma(+-0) */ @@ -832,7 +833,7 @@ static double zero = 0.0; /* used as const */ case 40: case 140: case 240: - /* gamma(finite) overflow */ + /* tgamma(finite) overflow */ exc.type = OVERFLOW; exc.name = type < 100 ? "tgamma" : (type < 200 ? "tgammaf" : "tgammal"); @@ -846,7 +847,7 @@ static double zero = 0.0; /* used as const */ case 41: case 141: case 241: - /* gamma(-integer) or gamma(0) */ + /* tgamma(-integer) */ exc.type = SING; exc.name = type < 100 ? "tgamma" : (type < 200 ? "tgammaf" : "tgammal"); @@ -973,8 +974,24 @@ static double zero = 0.0; /* used as const */ __set_errno (EDOM); } break; + case 50: + case 150: + case 250: + /* tgamma(+-0) */ + exc.type = SING; + exc.name = type < 100 ? "tgamma" : (type < 200 + ? "tgammaf" : "tgammal"); + exc.retval = __copysign (HUGE_VAL, x); + if (_LIB_VERSION == _POSIX_) + __set_errno (ERANGE); + else if (!matherr(&exc)) { + if (_LIB_VERSION == _SVID_) + (void) WRITE2("tgamma: SING error\n", 18); + __set_errno (ERANGE); + } + break; - /* #### Last used is 49/149/249 ### */ + /* #### Last used is 50/150/250 ### */ } return exc.retval; } 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) { diff --git a/sysdeps/ieee754/ldbl-96/e_gammal_r.c b/sysdeps/ieee754/ldbl-96/e_gammal_r.c index f19a072179..dd956fed95 100644 --- a/sysdeps/ieee754/ldbl-96/e_gammal_r.c +++ b/sysdeps/ieee754/ldbl-96/e_gammal_r.c @@ -1,5 +1,5 @@ /* Implementation of gamma function according to ISO C. - Copyright (C) 1997, 1999, 2001, 2003 Free Software Foundation, Inc. + Copyright (C) 1997, 1999, 2001, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -34,9 +34,9 @@ __ieee754_gammal_r (long double x, int *signgamp) if (((es & 0x7fff) | hx | 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 (es == 0xffffffff && ((hx & 0x7fffffff) | lx) == 0) { |