diff options
| -rw-r--r-- | ChangeLog | 8 | ||||
| -rw-r--r-- | NEWS | 4 | ||||
| -rw-r--r-- | math/auto-libm-test-in | 2 | ||||
| -rw-r--r-- | math/auto-libm-test-out | 50 | ||||
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_erff.c | 2 |
5 files changed, 63 insertions, 3 deletions
@@ -1,3 +1,11 @@ +2015-05-15 Joseph Myers <joseph@codesourcery.com> + + [BZ #18217] + * sysdeps/ieee754/flt-32/s_erff.c (__erfcf): Use 2**-26 not 2**-56 + as threshold for returning 1 - x. + * math/auto-libm-test-in: Add more tests of erfc. + * math/auto-libm-test-out: Regenerated. + 2015-05-14 Joseph Myers <joseph@codesourcery.com> [BZ #18196] @@ -16,8 +16,8 @@ Version 2.22 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998, 17999, 18007, 18019, 18020, 18029, 18030, 18032, 18036, 18038, 18039, 18042, 18043, 18046, 18047, 18068, 18080, 18093, 18100, 18104, 18110, 18111, - 18125, 18128, 18138, 18185, 18196, 18197, 18206, 18210, 18211, 18247, - 18287, 18319, 18333, 18346, 18397, 18409. + 18125, 18128, 18138, 18185, 18196, 18197, 18206, 18210, 18211, 18217, + 18247, 18287, 18319, 18333, 18346, 18397, 18409. * Cache information can be queried via sysconf() function on s390 e.g. with _SC_LEVEL1_ICACHE_SIZE as argument. diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in index 1deb99a..c4bfe74 100644 --- a/math/auto-libm-test-in +++ b/math/auto-libm-test-in @@ -1129,6 +1129,8 @@ erf -0x1.3a0d48p+0 erfc 0.0 erfc -0 +erfc 0x1p-55 +erfc -0x1p-55 erfc 0.125 erfc 0.75 erfc 1.25 diff --git a/math/auto-libm-test-out b/math/auto-libm-test-out index 9f6bbbb..d717ea4 100644 --- a/math/auto-libm-test-out +++ b/math/auto-libm-test-out @@ -101555,6 +101555,56 @@ erfc -0 = erfc tonearest ldbl-128ibm -0x0p+0L : 0x1p+0L : inexact-ok = erfc towardzero ldbl-128ibm -0x0p+0L : 0x1p+0L : inexact-ok = erfc upward ldbl-128ibm -0x0p+0L : 0x1p+0L : inexact-ok +erfc 0x1p-55 += erfc downward flt-32 0x2p-56f : 0xf.fffffp-4f : inexact-ok += erfc tonearest flt-32 0x2p-56f : 0x1p+0f : inexact-ok += erfc towardzero flt-32 0x2p-56f : 0xf.fffffp-4f : inexact-ok += erfc upward flt-32 0x2p-56f : 0x1p+0f : inexact-ok += erfc downward dbl-64 0x2p-56 : 0xf.ffffffffffff8p-4 : inexact-ok += erfc tonearest dbl-64 0x2p-56 : 0x1p+0 : inexact-ok += erfc towardzero dbl-64 0x2p-56 : 0xf.ffffffffffff8p-4 : inexact-ok += erfc upward dbl-64 0x2p-56 : 0x1p+0 : inexact-ok += erfc downward ldbl-96-intel 0x2p-56L : 0xf.ffffffffffffdbep-4L : inexact-ok += erfc tonearest ldbl-96-intel 0x2p-56L : 0xf.ffffffffffffdbep-4L : inexact-ok += erfc towardzero ldbl-96-intel 0x2p-56L : 0xf.ffffffffffffdbep-4L : inexact-ok += erfc upward ldbl-96-intel 0x2p-56L : 0xf.ffffffffffffdbfp-4L : inexact-ok += erfc downward ldbl-96-m68k 0x2p-56L : 0xf.ffffffffffffdbep-4L : inexact-ok += erfc tonearest ldbl-96-m68k 0x2p-56L : 0xf.ffffffffffffdbep-4L : inexact-ok += erfc towardzero ldbl-96-m68k 0x2p-56L : 0xf.ffffffffffffdbep-4L : inexact-ok += erfc upward ldbl-96-m68k 0x2p-56L : 0xf.ffffffffffffdbfp-4L : inexact-ok += erfc downward ldbl-128 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac925d8p-4L : inexact-ok += erfc tonearest ldbl-128 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac925ep-4L : inexact-ok += erfc towardzero ldbl-128 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac925d8p-4L : inexact-ok += erfc upward ldbl-128 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac925ep-4L : inexact-ok += erfc downward ldbl-128ibm 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac924p-4L : inexact-ok += erfc tonearest ldbl-128ibm 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac924p-4L : inexact-ok += erfc towardzero ldbl-128ibm 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac924p-4L : inexact-ok += erfc upward ldbl-128ibm 0x2p-56L : 0xf.ffffffffffffdbe4515f7ac928p-4L : inexact-ok +erfc -0x1p-55 += erfc downward flt-32 -0x2p-56f : 0x1p+0f : inexact-ok += erfc tonearest flt-32 -0x2p-56f : 0x1p+0f : inexact-ok += erfc towardzero flt-32 -0x2p-56f : 0x1p+0f : inexact-ok += erfc upward flt-32 -0x2p-56f : 0x1.000002p+0f : inexact-ok += erfc downward dbl-64 -0x2p-56 : 0x1p+0 : inexact-ok += erfc tonearest dbl-64 -0x2p-56 : 0x1p+0 : inexact-ok += erfc towardzero dbl-64 -0x2p-56 : 0x1p+0 : inexact-ok += erfc upward dbl-64 -0x2p-56 : 0x1.0000000000001p+0 : inexact-ok += erfc downward ldbl-96-intel -0x2p-56L : 0x1.000000000000024p+0L : inexact-ok += erfc tonearest ldbl-96-intel -0x2p-56L : 0x1.0000000000000242p+0L : inexact-ok += erfc towardzero ldbl-96-intel -0x2p-56L : 0x1.000000000000024p+0L : inexact-ok += erfc upward ldbl-96-intel -0x2p-56L : 0x1.0000000000000242p+0L : inexact-ok += erfc downward ldbl-96-m68k -0x2p-56L : 0x1.000000000000024p+0L : inexact-ok += erfc tonearest ldbl-96-m68k -0x2p-56L : 0x1.0000000000000242p+0L : inexact-ok += erfc towardzero ldbl-96-m68k -0x2p-56L : 0x1.000000000000024p+0L : inexact-ok += erfc upward ldbl-96-m68k -0x2p-56L : 0x1.0000000000000242p+0L : inexact-ok += erfc downward ldbl-128 -0x2p-56L : 0x1.0000000000000241baea08536da2p+0L : inexact-ok += erfc tonearest ldbl-128 -0x2p-56L : 0x1.0000000000000241baea08536da2p+0L : inexact-ok += erfc towardzero ldbl-128 -0x2p-56L : 0x1.0000000000000241baea08536da2p+0L : inexact-ok += erfc upward ldbl-128 -0x2p-56L : 0x1.0000000000000241baea08536da3p+0L : inexact-ok += erfc downward ldbl-128ibm -0x2p-56L : 0x1.0000000000000241baea08536d8p+0L : inexact-ok += erfc tonearest ldbl-128ibm -0x2p-56L : 0x1.0000000000000241baea08536d8p+0L : inexact-ok += erfc towardzero ldbl-128ibm -0x2p-56L : 0x1.0000000000000241baea08536d8p+0L : inexact-ok += erfc upward ldbl-128ibm -0x2p-56L : 0x1.0000000000000241baea08536ep+0L : inexact-ok erfc 0.125 = erfc downward flt-32 0x2p-4f : 0xd.c143cp-4f : inexact-ok = erfc tonearest flt-32 0x2p-4f : 0xd.c143dp-4f : inexact-ok diff --git a/sysdeps/ieee754/flt-32/s_erff.c b/sysdeps/ieee754/flt-32/s_erff.c index d23cff9..2be44cc 100644 --- a/sysdeps/ieee754/flt-32/s_erff.c +++ b/sysdeps/ieee754/flt-32/s_erff.c @@ -169,7 +169,7 @@ float __erfcf(float x) } if(ix < 0x3f580000) { /* |x|<0.84375 */ - if(ix < 0x23800000) /* |x|<2**-56 */ + if(ix < 0x32800000) /* |x|<2**-26 */ return one-x; z = x*x; r = pp0+z*(pp1+z*(pp2+z*(pp3+z*pp4))); |