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Fix erfc errno setting on underflow (bug 6786).

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This commit is contained in:
Joseph Myers 2013-12-03 16:25:18 +00:00
parent d8e2dbe3e3
commit 34e16df5a1
11 changed files with 410 additions and 28 deletions
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18
ChangeLog
View File

@ -1,5 +1,23 @@
2013-12-03 Joseph Myers <joseph@codesourcery.com>
[BZ #6786]
* sysdeps/ieee754/dbl-64/s_erf.c: Include <errno.h> and <float.h>.
(__erfc): Set errno to ERANGE when returning 0 or tiny * tiny.
* sysdeps/ieee754/flt-32/s_erff.c: Include <errno.h> and
<float.h>.
(__erfcf): Set errno to ERANGE when returning 0 or tiny * tiny.
* sysdeps/ieee754/ldbl-128/s_erfl.c: Include <errno.h>.
(__erfcl): Set errno to ERANGE when returning 0 or tiny * tiny.
* sysdeps/ieee754/ldbl-128ibm/s_erfl.c: Include <errno.h>.
(__erfcl): Set errno to ERANGE when returning 0 or tiny * tiny.
* sysdeps/ieee754/ldbl-96/s_erfl.c: Include <errno.h>.
(__erfcl): Set errno to ERANGE when returning 0 or tiny * tiny.
* math/auto-libm-test-in: Don't allow missing errno from erfc.
Add more erfc tests.
* math/auto-libm-test-out: Regenerated.
* sysdeps/i386/fpu/libm-test-ulps: Update.
* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
* math/auto-libm-test-in: Add tests of erf, erfc, exp, exp10,
exp2, expm1, j0 and j1.
* math/auto-libm-test-out: Regenerated.

24
NEWS
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@ -9,18 +9,18 @@ Version 2.19
* The following bugs are resolved with this release:
156, 387, 431, 832, 2801, 6787, 7003, 9954, 10253, 10278, 11087, 11157,
11214, 13028, 13982, 13985, 14029, 14032, 14143, 14155, 14547, 14699,
14752, 14876, 14910, 15004, 15048, 15218, 15277, 15308, 15362, 15374,
15400, 15427, 15483, 15522, 15531, 15532, 15601, 15608, 15609, 15610,
15632, 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736,
15748, 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15844,
15847, 15849, 15855, 15856, 15857, 15859, 15867, 15886, 15887, 15890,
15892, 15893, 15895, 15897, 15905, 15909, 15917, 15919, 15921, 15923,
15939, 15948, 15963, 15966, 15985, 15988, 15997, 16032, 16034, 16036,
16037, 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112,
16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195, 16214,
16245, 16271, 16289.
156, 387, 431, 832, 2801, 6786, 6787, 7003, 9954, 10253, 10278, 11087,
11157, 11214, 13028, 13982, 13985, 14029, 14032, 14143, 14155, 14547,
14699, 14752, 14876, 14910, 15004, 15048, 15218, 15277, 15308, 15362,
15374, 15400, 15427, 15483, 15522, 15531, 15532, 15601, 15608, 15609,
15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735,
15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825,
15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867, 15886, 15887,
15890, 15892, 15893, 15895, 15897, 15905, 15909, 15917, 15919, 15921,
15923, 15939, 15948, 15963, 15966, 15985, 15988, 15997, 16032, 16034,
16036, 16037, 16041, 16055, 16071, 16072, 16074, 16077, 16078, 16103,
16112, 16143, 16144, 16146, 16150, 16151, 16153, 16167, 16172, 16195,
16214, 16245, 16271, 16289.
* The public headers no longer use __unused nor __block. This change is to
support compiling programs that are derived from BSD sources and use

13
math/auto-libm-test-in
View File

@ -149,9 +149,18 @@ erfc 4.125
erfc 0x1.ffa002p+2
erfc 0x1.ffffc8p+2
erfc -0x1.fffffffffffff8p-2
# Bug 6786: errno may not be set on underflow.
erfc 27.0 missing-errno
erfc 26.0
erfc 27.0
erfc 28.0
erfc 0x1.ffff56789abcdef0123456789a8p+2
erfc 100
erfc 106
erfc 106.5
erfc 106.625
erfc 107
erfc 108
erfc 1000
erfc max
exp 0
exp -0

302
math/auto-libm-test-out
View File

@ -5176,10 +5176,35 @@ erfc -0x1.fffffffffffff8p-2
= erfc tonearest ldbl-128ibm -0x7.ffffffffffffep-4L : 0x1.853f7ae0c76e8f9c90d4d08ca18p+0L : inexact-ok
= erfc towardzero ldbl-128ibm -0x7.ffffffffffffep-4L : 0x1.853f7ae0c76e8f9c90d4d08ca1p+0L : inexact-ok
= erfc upward ldbl-128ibm -0x7.ffffffffffffep-4L : 0x1.853f7ae0c76e8f9c90d4d08ca18p+0L : inexact-ok
erfc 27.0 missing-errno
= erfc downward flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange errno-erange-ok
= erfc tonearest flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange errno-erange-ok
= erfc towardzero flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange errno-erange-ok
erfc 26.0
= erfc downward flt-32 0x1.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x1.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x1.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x1.ap+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x1.ap+4 : 0x9.425ff0e6f5118p-984 : inexact-ok
= erfc tonearest dbl-64 0x1.ap+4 : 0x9.425ff0e6f512p-984 : inexact-ok
= erfc towardzero dbl-64 0x1.ap+4 : 0x9.425ff0e6f5118p-984 : inexact-ok
= erfc upward dbl-64 0x1.ap+4 : 0x9.425ff0e6f512p-984 : inexact-ok
= erfc downward ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
= erfc tonearest ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
= erfc towardzero ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
= erfc upward ldbl-96-intel 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
= erfc downward ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
= erfc tonearest ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
= erfc towardzero ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d74p-984L : inexact-ok
= erfc upward ldbl-96-m68k 0x1.ap+4L : 0x9.425ff0e6f511d75p-984L : inexact-ok
= erfc downward ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceffp-984L : inexact-ok
= erfc tonearest ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceffp-984L : inexact-ok
= erfc towardzero ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceffp-984L : inexact-ok
= erfc upward ldbl-128 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbbceff8p-984L : inexact-ok
= erfc downward ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfb8p-984L : inexact-ok underflow errno-erange-ok
= erfc tonearest ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbcp-984L : inexact-ok underflow errno-erange-ok
= erfc towardzero ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfb8p-984L : inexact-ok underflow errno-erange-ok
= erfc upward ldbl-128ibm 0x1.ap+4L : 0x9.425ff0e6f511d74db40cfbcp-984L : inexact-ok underflow errno-erange-ok
erfc 27.0
= erfc downward flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x1.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x1.bp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x1.bp+4 : 0x6.783cp-1060 : inexact-ok underflow errno-erange-ok
= erfc tonearest dbl-64 0x1.bp+4 : 0x6.783cp-1060 : inexact-ok underflow errno-erange-ok
@ -5201,6 +5226,31 @@ erfc 27.0 missing-errno
= erfc tonearest ldbl-128ibm 0x1.bp+4L : 0x6.783cp-1060L : inexact-ok underflow errno-erange-ok
= erfc towardzero ldbl-128ibm 0x1.bp+4L : 0x6.783cp-1060L : inexact-ok underflow errno-erange-ok
= erfc upward ldbl-128ibm 0x1.bp+4L : 0x6.784p-1060L : inexact-ok underflow errno-erange-ok
erfc 28.0
= erfc downward flt-32 0x1.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x1.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x1.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x1.cp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x1.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x1.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x1.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x1.cp+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
= erfc tonearest ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
= erfc towardzero ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
= erfc upward ldbl-96-intel 0x1.cp+4L : 0x9.cd4b80875a8ec67p-1140L : inexact-ok
= erfc downward ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
= erfc tonearest ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
= erfc towardzero ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec66p-1140L : inexact-ok
= erfc upward ldbl-96-m68k 0x1.cp+4L : 0x9.cd4b80875a8ec67p-1140L : inexact-ok
= erfc downward ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1beadp-1140L : inexact-ok
= erfc tonearest ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1bead8p-1140L : inexact-ok
= erfc towardzero ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1beadp-1140L : inexact-ok
= erfc upward ldbl-128 0x1.cp+4L : 0x9.cd4b80875a8ec6603b9a1f1bead8p-1140L : inexact-ok
= erfc downward ldbl-128ibm 0x1.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x1.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x1.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x1.cp+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 0x1.ffff56789abcdef0123456789a8p+2
= erfc downward flt-32 0x7.fffd6p+0f : 0xe.3cd88p-100f : inexact-ok
= erfc tonearest flt-32 0x7.fffd6p+0f : 0xe.3cd88p-100f : inexact-ok
@ -5330,6 +5380,250 @@ erfc 0x1.ffff56789abcdef0123456789a8p+2
= erfc tonearest ldbl-128ibm 0x7.fffd59e26af37bc048d159e26ap+0L : 0xe.3cddffbbe84faf818649c2377p-100L : inexact-ok
= erfc towardzero ldbl-128ibm 0x7.fffd59e26af37bc048d159e26ap+0L : 0xe.3cddffbbe84faf818649c2377p-100L : inexact-ok
= erfc upward ldbl-128ibm 0x7.fffd59e26af37bc048d159e26ap+0L : 0xe.3cddffbbe84faf818649c23774p-100L : inexact-ok
erfc 100
= erfc downward flt-32 0x6.4p+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x6.4p+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x6.4p+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x6.4p+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x6.4p+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x6.4p+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x6.4p+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x6.4p+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
= erfc tonearest ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
= erfc towardzero ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
= erfc upward ldbl-96-intel 0x6.4p+4L : 0x2.fd514cef7750e58cp-14436L : inexact-ok
= erfc downward ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
= erfc tonearest ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
= erfc towardzero ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e588p-14436L : inexact-ok
= erfc upward ldbl-96-m68k 0x6.4p+4L : 0x2.fd514cef7750e58cp-14436L : inexact-ok
= erfc downward ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dcp-14436L : inexact-ok
= erfc tonearest ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dcp-14436L : inexact-ok
= erfc towardzero ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dcp-14436L : inexact-ok
= erfc upward ldbl-128 0x6.4p+4L : 0x2.fd514cef7750e58906601ff35dc2p-14436L : inexact-ok
= erfc downward ldbl-128ibm 0x6.4p+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x6.4p+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x6.4p+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x6.4p+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 106
= erfc downward flt-32 0x6.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x6.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x6.ap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x6.ap+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x6.ap+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x6.ap+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x6.ap+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x6.ap+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
= erfc tonearest ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
= erfc towardzero ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
= erfc upward ldbl-96-intel 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
= erfc downward ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
= erfc tonearest ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
= erfc towardzero ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432dp-16220L : inexact-ok
= erfc upward ldbl-96-m68k 0x6.ap+4L : 0x5.028a2f1656a432d8p-16220L : inexact-ok
= erfc downward ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df48p-16220L : inexact-ok
= erfc tonearest ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df48p-16220L : inexact-ok
= erfc towardzero ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df48p-16220L : inexact-ok
= erfc upward ldbl-128 0x6.ap+4L : 0x5.028a2f1656a432d79f76a6f2df4cp-16220L : inexact-ok
= erfc downward ldbl-128ibm 0x6.ap+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x6.ap+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x6.ap+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x6.ap+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 106.5
= erfc downward flt-32 0x6.a8p+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x6.a8p+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x6.a8p+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x6.a8p+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x6.a8p+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x6.a8p+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x6.a8p+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x6.a8p+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
= erfc tonearest ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
= erfc towardzero ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
= erfc upward ldbl-96-intel 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a8p-16372L : inexact-ok
= erfc downward ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
= erfc tonearest ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
= erfc towardzero ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a4p-16372L : inexact-ok
= erfc upward ldbl-96-m68k 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a8p-16372L : inexact-ok
= erfc downward ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c4p-16372L : inexact-ok
= erfc tonearest ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c4p-16372L : inexact-ok
= erfc towardzero ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c4p-16372L : inexact-ok
= erfc upward ldbl-128 0x6.a8p+4L : 0x2.0b5b5b3bbf7d96a5e595291fc8c6p-16372L : inexact-ok
= erfc downward ldbl-128ibm 0x6.a8p+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x6.a8p+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x6.a8p+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x6.a8p+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 106.625
= erfc downward flt-32 0x6.aap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x6.aap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x6.aap+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x6.aap+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x6.aap+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x6.aap+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x6.aap+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x6.aap+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee9978p-16412L : inexact-ok underflow errno-erange-ok
= erfc tonearest ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee998p-16412L : inexact-ok underflow errno-erange-ok
= erfc towardzero ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee9978p-16412L : inexact-ok underflow errno-erange-ok
= erfc upward ldbl-96-intel 0x6.aap+4L : 0x6.0b6ee998p-16412L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee997cp-16412L : inexact-ok underflow errno-erange-ok
= erfc tonearest ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee997cp-16412L : inexact-ok underflow errno-erange-ok
= erfc towardzero ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee997cp-16412L : inexact-ok underflow errno-erange-ok
= erfc upward ldbl-96-m68k 0x6.aap+4L : 0x6.0b6ee998p-16412L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f08p-16412L : inexact-ok underflow errno-erange-ok
= erfc tonearest ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f08p-16412L : inexact-ok underflow errno-erange-ok
= erfc towardzero ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f08p-16412L : inexact-ok underflow errno-erange-ok
= erfc upward ldbl-128 0x6.aap+4L : 0x6.0b6ee997d3343b5bf2f0cp-16412L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0x6.aap+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x6.aap+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x6.aap+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x6.aap+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 107
= erfc downward flt-32 0x6.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x6.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x6.bp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x6.bp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x6.bp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x6.bp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x6.bp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x6.bp+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-intel 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-intel 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-intel 0x6.bp+4L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-m68k 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-m68k 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-m68k 0x6.bp+4L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0x6.bp+4L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x6.bp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x6.bp+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 108
= erfc downward flt-32 0x6.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x6.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x6.cp+4f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x6.cp+4f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x6.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x6.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x6.cp+4 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x6.cp+4 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-intel 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-intel 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-intel 0x6.cp+4L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-m68k 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-m68k 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-m68k 0x6.cp+4L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0x6.cp+4L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x6.cp+4L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x6.cp+4L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc 1000
= erfc downward flt-32 0x3.e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0x3.e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0x3.e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0x3.e8p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0x3.e8p+8 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0x3.e8p+8 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0x3.e8p+8 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0x3.e8p+8 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-intel 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-intel 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-intel 0x3.e8p+8L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-m68k 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-m68k 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-m68k 0x3.e8p+8L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0x3.e8p+8L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0x3.e8p+8L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0x3.e8p+8L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
erfc max
= erfc downward flt-32 0xf.fffffp+124f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc tonearest flt-32 0xf.fffffp+124f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc towardzero flt-32 0xf.fffffp+124f : 0x0p+0f : inexact-ok underflow errno-erange
= erfc upward flt-32 0xf.fffffp+124f : 0x8p-152f : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0xf.fffffp+124 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0xf.fffffp+124 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0xf.fffffp+124 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0xf.fffffp+124 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-intel 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-intel 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-intel 0xf.fffffp+124L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-m68k 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-m68k 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-m68k 0xf.fffffp+124L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0xf.fffffp+124L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0xf.fffffp+124L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0xf.fffffp+124L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
= erfc downward dbl-64 0xf.ffffffffffff8p+1020 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc tonearest dbl-64 0xf.ffffffffffff8p+1020 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc towardzero dbl-64 0xf.ffffffffffff8p+1020 : 0x0p+0 : inexact-ok underflow errno-erange
= erfc upward dbl-64 0xf.ffffffffffff8p+1020 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-intel 0xf.ffffffffffff8p+1020L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-m68k 0xf.ffffffffffff8p+1020L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0xf.ffffffffffff8p+1020L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0xf.ffffffffffff8p+1020L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-intel 0xf.fffffffffffffffp+16380L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-96-m68k 0xf.fffffffffffffffp+16380L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0xf.fffffffffffffffp+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0xf.fffffffffffffffp+16380L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0xf.fffffffffffffffffffffffffff8p+16380L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128 0xf.ffffffffffffbffffffffffffcp+1020L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
= erfc downward ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc tonearest ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc towardzero ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x0p+0L : inexact-ok underflow errno-erange
= erfc upward ldbl-128ibm 0xf.ffffffffffffbffffffffffffcp+1020L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
exp 0
= exp downward flt-32 0x0p+0f : 0x1p+0f : inexact-ok
= exp tonearest flt-32 0x0p+0f : 0x1p+0f : inexact-ok

3
sysdeps/i386/fpu/libm-test-ulps
View File

@ -5946,6 +5946,9 @@ double: 1
idouble: 1
ildouble: 1
ldouble: 1
Test "erfc (0x6.4p+4)":
ildouble: 1
ldouble: 1
Test "erfc (0x7.fe8008p+0)":
ildouble: 1
ldouble: 1

17
sysdeps/ieee754/dbl-64/s_erf.c
View File

@ -112,6 +112,8 @@ static char rcsid[] = "$NetBSD: s_erf.c,v 1.8 1995/05/10 20:47:05 jtc Exp $";
*/
#include <errno.h>
#include <float.h>
#include <math.h>
#include <math_private.h>
@ -391,14 +393,25 @@ __erfc (double x)
r = __ieee754_exp (-z * z - 0.5625) *
__ieee754_exp ((z - x) * (z + x) + R / S);
if (hx > 0)
return r / x;
{
#if FLT_EVAL_METHOD != 0
volatile
#endif
double ret = r / x;
if (ret == 0)
__set_errno (ERANGE);
return ret;
}
else
return two - r / x;
}
else
{
if (hx > 0)
return tiny * tiny;
{
__set_errno (ERANGE);
return tiny * tiny;
}
else
return two - tiny;
}

19
sysdeps/ieee754/flt-32/s_erff.c
View File

@ -17,6 +17,8 @@
static char rcsid[] = "$NetBSD: s_erff.c,v 1.4 1995/05/10 20:47:07 jtc Exp $";
#endif
#include <errno.h>
#include <float.h>
#include <math.h>
#include <math_private.h>
@ -203,9 +205,22 @@ float __erfcf(float x)
SET_FLOAT_WORD(z,ix&0xffffe000);
r = __ieee754_expf(-z*z-(float)0.5625)*
__ieee754_expf((z-x)*(z+x)+R/S);
if(hx>0) return r/x; else return two-r/x;
if(hx>0) {
#if FLT_EVAL_METHOD != 0
volatile
#endif
float ret = r/x;
if (ret == 0)
__set_errno (ERANGE);
return ret;
} else
return two-r/x;
} else {
if(hx>0) return tiny*tiny; else return two-tiny;
if(hx>0) {
__set_errno (ERANGE);
return tiny*tiny;
} else
return two-tiny;
}
}
weak_alias (__erfcf, erfcf)

13
sysdeps/ieee754/ldbl-128/s_erfl.c
View File

@ -96,6 +96,7 @@
* erfc/erf(NaN) is NaN
*/
#include <errno.h>
#include <math.h>
#include <math_private.h>
@ -918,14 +919,22 @@ __erfcl (long double x)
r = __ieee754_expl (-z * z - 0.5625) *
__ieee754_expl ((z - x) * (z + x) + p);
if ((sign & 0x80000000) == 0)
return r / x;
{
long double ret = r / x;
if (ret == 0)
__set_errno (ERANGE);
return ret;
}
else
return two - r / x;
}
else
{
if ((sign & 0x80000000) == 0)
return tiny * tiny;
{
__set_errno (ERANGE);
return tiny * tiny;
}
else
return two - tiny;
}

13
sysdeps/ieee754/ldbl-128ibm/s_erfl.c
View File

@ -101,6 +101,7 @@
* erfc/erf(NaN) is NaN
*/
#include <errno.h>
#include <math.h>
#include <math_private.h>
#include <math_ldbl_opt.h>
@ -940,14 +941,22 @@ __erfcl (long double x)
r = __ieee754_expl (-z * z - 0.5625) *
__ieee754_expl ((z - x) * (z + x) + p);
if ((hx & 0x80000000) == 0)
return r / x;
{
long double ret = r / x;
if (ret == 0)
__set_errno (ERANGE);
return ret;
}
else
return two - r / x;
}
else
{
if ((hx & 0x80000000) == 0)
return tiny * tiny;
{
__set_errno (ERANGE);
return tiny * tiny;
}
else
return two - tiny;
}

13
sysdeps/ieee754/ldbl-96/s_erfl.c
View File

@ -104,6 +104,7 @@
*/
#include <errno.h>
#include <math.h>
#include <math_private.h>
@ -422,14 +423,22 @@ __erfcl (long double x)
r = __ieee754_expl (-z * z - 0.5625) *
__ieee754_expl ((z - x) * (z + x) + R / S);
if ((se & 0x8000) == 0)
return r / x;
{
long double ret = r / x;
if (ret == 0)
__set_errno (ERANGE);
return ret;
}
else
return two - r / x;
}
else
{
if ((se & 0x8000) == 0)
return tiny * tiny;
{
__set_errno (ERANGE);
return tiny * tiny;
}
else
return two - tiny;
}

3
sysdeps/x86_64/fpu/libm-test-ulps
View File

@ -6776,6 +6776,9 @@ double: 1
idouble: 1
ildouble: 1
ldouble: 1
Test "erfc (0x6.4p+4)":
ildouble: 1
ldouble: 1
Test "erfc (0x7.fe8008p+0)":
float: 1
ifloat: 1