diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | math/auto-libm-test-in | 3 | ||||
| -rw-r--r-- | math/auto-libm-test-out | 42 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-128/e_lgammal_r.c | 4 |
5 files changed, 55 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog index 61a4b539fe..9e23da11b4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,12 @@ 2015-09-11 Joseph Myers <joseph@codesourcery.com> + [BZ #18952] + * sysdeps/ieee754/ldbl-128/e_lgammal_r.c (__ieee754_lgammal_r): Do + not convert non-integer negative arguments to int to determine the + value of signgam. + * math/auto-libm-test-in: Add more tests of lgamma. + * math/auto-libm-test-out: Regenerated. + * math/auto-libm-test-in: Add more tests of acosh, atanh, cbrt, cosh, csqrt, erfc, expm1 and lgamma. * math/auto-libm-test-out: Regenerated. diff --git a/NEWS b/NEWS index 3e78630caf..65e706c9da 100644 --- a/NEWS +++ b/NEWS @@ -13,7 +13,7 @@ Version 2.23 16973, 17787, 17905, 18084, 18086, 18240, 18265, 18370, 18421, 18480, 18525, 18610, 18618, 18647, 18661, 18674, 18675, 18681, 18757, 18778, 18781, 18787, 18789, 18790, 18795, 18796, 18820, 18823, 18824, 18863, - 18870, 18873, 18887, 18921. + 18870, 18873, 18887, 18921, 18952. * The obsolete header <regexp.h> has been removed. Programs that require this header must be updated to use <regex.h> instead. diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in index 84b3df0bee..83eb4cf8c3 100644 --- a/math/auto-libm-test-in +++ b/math/auto-libm-test-in @@ -2047,6 +2047,9 @@ lgamma -0xffffffffffffffffp-1 lgamma -0x3ffffffffffffffffffffffffffp-1 lgamma -0x1ffffffffffffffffffffffffffffp-1 +lgamma -0x100000000.8p0 +lgamma -0x100000001.8p0 + lgamma -0.25 lgamma -0.5 lgamma -0.75 diff --git a/math/auto-libm-test-out b/math/auto-libm-test-out index 14caa1d842..747815b1c9 100644 --- a/math/auto-libm-test-out +++ b/math/auto-libm-test-out @@ -153351,6 +153351,48 @@ lgamma -0x1ffffffffffffffffffffffffffffp-1 = lgamma tonearest ldbl-128 -0xf.fffffffffffffffffffffffffff8p+108L : -0x4.ca1ea7c6bcac53b28539e9281ba4p+116L 1 : inexact-ok = lgamma towardzero ldbl-128 -0xf.fffffffffffffffffffffffffff8p+108L : -0x4.ca1ea7c6bcac53b28539e9281ba4p+116L 1 : inexact-ok = lgamma upward ldbl-128 -0xf.fffffffffffffffffffffffffff8p+108L : -0x4.ca1ea7c6bcac53b28539e9281ba4p+116L 1 : inexact-ok +lgamma -0x100000000.8p0 += lgamma downward dbl-64 -0x1.000000008p+32 : -0x1.52e42ff102e65p+36 -1 : inexact-ok += lgamma tonearest dbl-64 -0x1.000000008p+32 : -0x1.52e42ff102e65p+36 -1 : inexact-ok += lgamma towardzero dbl-64 -0x1.000000008p+32 : -0x1.52e42ff102e64p+36 -1 : inexact-ok += lgamma upward dbl-64 -0x1.000000008p+32 : -0x1.52e42ff102e64p+36 -1 : inexact-ok += lgamma downward ldbl-96-intel -0x1.000000008p+32L : -0x1.52e42ff102e64be4p+36L -1 : inexact-ok += lgamma tonearest ldbl-96-intel -0x1.000000008p+32L : -0x1.52e42ff102e64be2p+36L -1 : inexact-ok += lgamma towardzero ldbl-96-intel -0x1.000000008p+32L : -0x1.52e42ff102e64be2p+36L -1 : inexact-ok += lgamma upward ldbl-96-intel -0x1.000000008p+32L : -0x1.52e42ff102e64be2p+36L -1 : inexact-ok += lgamma downward ldbl-96-m68k -0x1.000000008p+32L : -0x1.52e42ff102e64be4p+36L -1 : inexact-ok += lgamma tonearest ldbl-96-m68k -0x1.000000008p+32L : -0x1.52e42ff102e64be2p+36L -1 : inexact-ok += lgamma towardzero ldbl-96-m68k -0x1.000000008p+32L : -0x1.52e42ff102e64be2p+36L -1 : inexact-ok += lgamma upward ldbl-96-m68k -0x1.000000008p+32L : -0x1.52e42ff102e64be2p+36L -1 : inexact-ok += lgamma downward ldbl-128 -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d246256p+36L -1 : inexact-ok += lgamma tonearest ldbl-128 -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d246255p+36L -1 : inexact-ok += lgamma towardzero ldbl-128 -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d246255p+36L -1 : inexact-ok += lgamma upward ldbl-128 -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d246255p+36L -1 : inexact-ok += lgamma downward ldbl-128ibm -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d24628p+36L -1 : inexact-ok += lgamma tonearest ldbl-128ibm -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d24628p+36L -1 : inexact-ok += lgamma towardzero ldbl-128ibm -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d2462p+36L -1 : inexact-ok += lgamma upward ldbl-128ibm -0x1.000000008p+32L : -0x1.52e42ff102e64be289794d2462p+36L -1 : inexact-ok +lgamma -0x100000001.8p0 += lgamma downward dbl-64 -0x1.000000018p+32 : -0x1.52e42ff265ca8p+36 1 : inexact-ok += lgamma tonearest dbl-64 -0x1.000000018p+32 : -0x1.52e42ff265ca8p+36 1 : inexact-ok += lgamma towardzero dbl-64 -0x1.000000018p+32 : -0x1.52e42ff265ca7p+36 1 : inexact-ok += lgamma upward dbl-64 -0x1.000000018p+32 : -0x1.52e42ff265ca7p+36 1 : inexact-ok += lgamma downward ldbl-96-intel -0x1.000000018p+32L : -0x1.52e42ff265ca7bd4p+36L 1 : inexact-ok += lgamma tonearest ldbl-96-intel -0x1.000000018p+32L : -0x1.52e42ff265ca7bd2p+36L 1 : inexact-ok += lgamma towardzero ldbl-96-intel -0x1.000000018p+32L : -0x1.52e42ff265ca7bd2p+36L 1 : inexact-ok += lgamma upward ldbl-96-intel -0x1.000000018p+32L : -0x1.52e42ff265ca7bd2p+36L 1 : inexact-ok += lgamma downward ldbl-96-m68k -0x1.000000018p+32L : -0x1.52e42ff265ca7bd4p+36L 1 : inexact-ok += lgamma tonearest ldbl-96-m68k -0x1.000000018p+32L : -0x1.52e42ff265ca7bd2p+36L 1 : inexact-ok += lgamma towardzero ldbl-96-m68k -0x1.000000018p+32L : -0x1.52e42ff265ca7bd2p+36L 1 : inexact-ok += lgamma upward ldbl-96-m68k -0x1.000000018p+32L : -0x1.52e42ff265ca7bd2p+36L 1 : inexact-ok += lgamma downward ldbl-128 -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be41dp+36L 1 : inexact-ok += lgamma tonearest ldbl-128 -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be41dp+36L 1 : inexact-ok += lgamma towardzero ldbl-128 -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be41cp+36L 1 : inexact-ok += lgamma upward ldbl-128 -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be41cp+36L 1 : inexact-ok += lgamma downward ldbl-128ibm -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be48p+36L 1 : inexact-ok += lgamma tonearest ldbl-128ibm -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be4p+36L 1 : inexact-ok += lgamma towardzero ldbl-128ibm -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be4p+36L 1 : inexact-ok += lgamma upward ldbl-128ibm -0x1.000000018p+32L : -0x1.52e42ff265ca7bd24518407be4p+36L 1 : inexact-ok lgamma -0.25 = lgamma downward flt-32 -0x4p-4f : 0x1.96ee68p+0f -1 : inexact-ok = lgamma tonearest flt-32 -0x4p-4f : 0x1.96ee68p+0f -1 : inexact-ok diff --git a/sysdeps/ieee754/ldbl-128/e_lgammal_r.c b/sysdeps/ieee754/ldbl-128/e_lgammal_r.c index abf0f15995..500aacc9c4 100644 --- a/sysdeps/ieee754/ldbl-128/e_lgammal_r.c +++ b/sysdeps/ieee754/ldbl-128/e_lgammal_r.c @@ -787,8 +787,8 @@ __ieee754_lgammal_r (long double x, int *signgamp) p = __floorl (q); if (p == q) return (one / (p - p)); - i = p; - if ((i & 1) == 0) + long double halfp = p * 0.5L; + if (halfp == __floorl (halfp)) *signgamp = -1; else *signgamp = 1; |