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Fix log1p missing underflows (bug 16339).
Similar to various other bugs in this area, some log1p implementations do not raise the underflow exception for subnormal arguments, when the result is tiny and inexact. This patch forces the exception in a similar way to previous fixes. (The ldbl-128ibm implementation doesn't currently need any change as it already generates this exception, albeit through code that would generate spurious exceptions in other cases; special code for this issue will only be needed there when fixing the spurious exceptions.) Tested for x86_64, x86, powerpc and mips64. [BZ #16339] * sysdeps/i386/fpu/s_log1p.S (dbl_min): New object. (__log1p): Force underflow exception for results with small absolute value. * sysdeps/i386/fpu/s_log1pf.S (flt_min): New object. (__log1pf): Force underflow exception for results with small absolute value. * sysdeps/ieee754/dbl-64/s_log1p.c: Include <float.h>. (__log1p): Force underflow exception for results with small absolute value. * sysdeps/ieee754/flt-32/s_log1pf.c: Include <float.h>. (__log1pf): Force underflow exception for results with small absolute value. * sysdeps/ieee754/ldbl-128/s_log1pl.c: Include <float.h>. (__log1pl): Force underflow exception for results with small absolute value. * math/auto-libm-test-in: Do not allow missing underflow exceptions from log1p. * math/auto-libm-test-out: Regenerated.
This commit is contained in:
Joseph Myers
parent
95b07fbcc7
commit
0b7a5f9201
22
ChangeLog
22
ChangeLog
@ -1,3 +1,25 @@
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2015-05-14 Joseph Myers <joseph@codesourcery.com>
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[BZ #16339]
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* sysdeps/i386/fpu/s_log1p.S (dbl_min): New object.
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(__log1p): Force underflow exception for results with small
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absolute value.
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* sysdeps/i386/fpu/s_log1pf.S (flt_min): New object.
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(__log1pf): Force underflow exception for results with small
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absolute value.
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* sysdeps/ieee754/dbl-64/s_log1p.c: Include <float.h>.
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(__log1p): Force underflow exception for results with small
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absolute value.
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* sysdeps/ieee754/flt-32/s_log1pf.c: Include <float.h>.
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(__log1pf): Force underflow exception for results with small
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absolute value.
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* sysdeps/ieee754/ldbl-128/s_log1pl.c: Include <float.h>.
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(__log1pl): Force underflow exception for results with small
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absolute value.
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* math/auto-libm-test-in: Do not allow missing underflow
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exceptions from log1p.
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* math/auto-libm-test-out: Regenerated.
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2015-05-14 Jakub Bogusz <qboosh@pld-linux.org>
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Adhemerval Zanella <adhemerval.zanella@linaro.org>
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2
NEWS
2
NEWS
@ -9,7 +9,7 @@ Version 2.22
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* The following bugs are resolved with this release:
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4719, 6792, 13064, 14094, 14841, 14906, 15319, 15467, 15790, 15969,
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4719, 6792, 13064, 14094, 14841, 14906, 15319, 15467, 15790, 15969, 16339,
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16351, 16512, 16560, 16783, 16850, 17090, 17195, 17269, 17523, 17542,
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17569, 17588, 17596, 17620, 17621, 17628, 17631, 17692, 17711, 17715,
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17776, 17779, 17792, 17836, 17912, 17916, 17930, 17932, 17944, 17949,
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@ -1850,11 +1850,10 @@ log1p -0
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log1p e-1
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log1p -0.25
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log1p -0.875
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# Bug 16339: underflow exception may be missing.
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log1p min missing-underflow
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log1p min_subnorm missing-underflow
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log1p -min missing-underflow
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log1p -min_subnorm missing-underflow
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log1p min
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log1p min_subnorm
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log1p -min
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log1p -min_subnorm
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log1p 0x1p10
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log1p 0x1p20
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log1p 0x1p30
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@ -143235,7 +143235,7 @@ log1p -0.875
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= log1p tonearest ldbl-128ibm -0xep-4L : -0x2.145647e7756e6d035dab1ac80cp+0L : inexact-ok
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= log1p towardzero ldbl-128ibm -0xep-4L : -0x2.145647e7756e6d035dab1ac80bp+0L : inexact-ok
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= log1p upward ldbl-128ibm -0xep-4L : -0x2.145647e7756e6d035dab1ac80bp+0L : inexact-ok
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log1p min missing-underflow
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log1p min
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= log1p downward flt-32 0x4p-128f : 0x3.fffff8p-128f : inexact-ok underflow-ok errno-erange-ok
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= log1p tonearest flt-32 0x4p-128f : 0x4p-128f : inexact-ok underflow-ok errno-erange-ok
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= log1p towardzero flt-32 0x4p-128f : 0x3.fffff8p-128f : inexact-ok underflow-ok errno-erange-ok
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@ -143276,10 +143276,10 @@ log1p min missing-underflow
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= log1p tonearest ldbl-128 0x4p-1024L : 0x4p-1024L : inexact-ok
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= log1p towardzero ldbl-128 0x4p-1024L : 0x3.fffffffffffffffffffffffffffep-1024L : inexact-ok
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= log1p upward ldbl-128 0x4p-1024L : 0x4p-1024L : inexact-ok
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= log1p downward ldbl-128ibm 0x4p-1024L : 0x3.ffffffffffffcp-1024L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128ibm 0x4p-1024L : 0x3.ffffffffffffcp-1024L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-128ibm 0x4p-1024L : 0x3.ffffffffffffcp-1024L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-128ibm 0x4p-1024L : 0x3.ffffffffffffcp-1024L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-128ibm 0x4p-1024L : 0x4p-1024L : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-96-intel 0x4p-16384L : 0x3.fffffffffffffff8p-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p tonearest ldbl-96-intel 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p towardzero ldbl-96-intel 0x4p-16384L : 0x3.fffffffffffffff8p-16384L : inexact-ok underflow-ok errno-erange-ok
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@ -143292,18 +143292,18 @@ log1p min missing-underflow
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= log1p tonearest ldbl-128 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128 0x4p-16384L : 0x3.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p upward ldbl-128 0x4p-16384L : 0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p downward ldbl-96-intel 0x2p-16384L : 0x1.fffffffffffffff8p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-96-intel 0x2p-16384L : 0x1.fffffffffffffff8p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-96-intel 0x2p-16384L : 0x1.fffffffffffffff8p-16384L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-96-intel 0x2p-16384L : 0x1.fffffffffffffff8p-16384L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-96-intel 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-96-m68k 0x2p-16384L : 0x1.fffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p tonearest ldbl-96-m68k 0x2p-16384L : 0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p towardzero ldbl-96-m68k 0x2p-16384L : 0x1.fffffffffffffffcp-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p upward ldbl-96-m68k 0x2p-16384L : 0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
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= log1p downward ldbl-128 0x2p-16384L : 0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128 0x2p-16384L : 0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-128 0x2p-16384L : 0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-128 0x2p-16384L : 0x1.fffffffffffffffffffffffffffcp-16384L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-128 0x2p-16384L : 0x2p-16384L : inexact-ok underflow errno-erange-ok
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= log1p downward dbl-64 0x8p-972 : 0x7.ffffffffffffcp-972 : inexact-ok
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= log1p tonearest dbl-64 0x8p-972 : 0x8p-972 : inexact-ok
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= log1p towardzero dbl-64 0x8p-972 : 0x7.ffffffffffffcp-972 : inexact-ok
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@ -143324,11 +143324,11 @@ log1p min missing-underflow
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= log1p tonearest ldbl-128ibm 0x8p-972L : 0x8p-972L : inexact-ok underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128ibm 0x8p-972L : 0x7.fffffffffffffffffffffffffcp-972L : inexact-ok underflow-ok errno-erange-ok
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= log1p upward ldbl-128ibm 0x8p-972L : 0x8p-972L : inexact-ok underflow-ok errno-erange-ok
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log1p min_subnorm missing-underflow
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= log1p downward flt-32 0x8p-152f : 0x0p+0f : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero flt-32 0x8p-152f : 0x0p+0f : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
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log1p min_subnorm
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= log1p downward flt-32 0x8p-152f : 0x0p+0f : inexact-ok underflow errno-erange-ok
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= log1p tonearest flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
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= log1p towardzero flt-32 0x8p-152f : 0x0p+0f : inexact-ok underflow errno-erange-ok
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= log1p upward flt-32 0x8p-152f : 0x8p-152f : inexact-ok underflow errno-erange-ok
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= log1p downward dbl-64 0x8p-152 : 0x7.ffffffffffffcp-152 : inexact-ok
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= log1p tonearest dbl-64 0x8p-152 : 0x8p-152 : inexact-ok
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= log1p towardzero dbl-64 0x8p-152 : 0x7.ffffffffffffcp-152 : inexact-ok
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@ -143349,10 +143349,10 @@ log1p min_subnorm missing-underflow
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= log1p tonearest ldbl-128ibm 0x8p-152L : 0x8p-152L : inexact-ok
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= log1p towardzero ldbl-128ibm 0x8p-152L : 0x7.fffffffffffffffffffffffffep-152L : inexact-ok
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= log1p upward ldbl-128ibm 0x8p-152L : 0x8p-152L : inexact-ok
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= log1p downward dbl-64 0x4p-1076 : 0x0p+0 : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero dbl-64 0x4p-1076 : 0x0p+0 : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward dbl-64 0x4p-1076 : 0x0p+0 : inexact-ok underflow errno-erange-ok
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= log1p tonearest dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
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= log1p towardzero dbl-64 0x4p-1076 : 0x0p+0 : inexact-ok underflow errno-erange-ok
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= log1p upward dbl-64 0x4p-1076 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-96-intel 0x4p-1076L : 0x3.fffffffffffffffcp-1076L : inexact-ok
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= log1p tonearest ldbl-96-intel 0x4p-1076L : 0x4p-1076L : inexact-ok
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= log1p towardzero ldbl-96-intel 0x4p-1076L : 0x3.fffffffffffffffcp-1076L : inexact-ok
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@ -143365,35 +143365,35 @@ log1p min_subnorm missing-underflow
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= log1p tonearest ldbl-128 0x4p-1076L : 0x4p-1076L : inexact-ok
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= log1p towardzero ldbl-128 0x4p-1076L : 0x3.fffffffffffffffffffffffffffep-1076L : inexact-ok
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= log1p upward ldbl-128 0x4p-1076L : 0x4p-1076L : inexact-ok
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= log1p downward ldbl-128ibm 0x4p-1076L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128ibm 0x4p-1076L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-96-intel 0x8p-16448L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-96-intel 0x8p-16448L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-96-m68k 0x8p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-96-m68k 0x8p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-128 0x8p-16448L : 0x7.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128 0x8p-16448L : 0x7.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-96-m68k 0x4p-16448L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-96-m68k 0x4p-16448L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-128 0x4p-16448L : 0x3.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128 0x4p-16448L : 0x3.fffffffffffcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p downward ldbl-128 0x4p-16496L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p tonearest ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p towardzero ldbl-128 0x4p-16496L : 0x0p+0L : inexact-ok underflow underflow-ok errno-erange-ok
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= log1p upward ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
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log1p -min missing-underflow
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= log1p downward ldbl-128ibm 0x4p-1076L : 0x0p+0L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-128ibm 0x4p-1076L : 0x0p+0L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-128ibm 0x4p-1076L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-96-intel 0x8p-16448L : 0x0p+0L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-96-intel 0x8p-16448L : 0x0p+0L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-96-intel 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-96-m68k 0x8p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-96-m68k 0x8p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-96-m68k 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-128 0x8p-16448L : 0x7.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
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= log1p towardzero ldbl-128 0x8p-16448L : 0x7.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
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= log1p upward ldbl-128 0x8p-16448L : 0x8p-16448L : inexact-ok underflow errno-erange-ok
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= log1p downward ldbl-96-m68k 0x4p-16448L : 0x0p+0L : inexact-ok underflow errno-erange-ok
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= log1p tonearest ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-96-m68k 0x4p-16448L : 0x0p+0L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-96-m68k 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-128 0x4p-16448L : 0x3.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128 0x4p-16448L : 0x3.fffffffffffcp-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128 0x4p-16448L : 0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-128 0x4p-16496L : 0x0p+0L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128 0x4p-16496L : 0x0p+0L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128 0x4p-16496L : 0x4p-16496L : inexact-ok underflow errno-erange-ok
|
||||
log1p -min
|
||||
= log1p downward flt-32 -0x4p-128f : -0x4.000008p-128f : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p tonearest flt-32 -0x4p-128f : -0x4p-128f : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p towardzero flt-32 -0x4p-128f : -0x4p-128f : inexact-ok underflow-ok errno-erange-ok
|
||||
@ -143434,10 +143434,10 @@ log1p -min missing-underflow
|
||||
= log1p tonearest ldbl-128 -0x4p-1024L : -0x4p-1024L : inexact-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-1024L : -0x4p-1024L : inexact-ok
|
||||
= log1p upward ldbl-128 -0x4p-1024L : -0x4p-1024L : inexact-ok
|
||||
= log1p downward ldbl-128ibm -0x4p-1024L : -0x4.0000000000004p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128ibm -0x4p-1024L : -0x4.0000000000004p-1024L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128ibm -0x4p-1024L : -0x4p-1024L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-96-intel -0x4p-16384L : -0x4.0000000000000008p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-96-intel -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-96-intel -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
@ -143450,18 +143450,18 @@ log1p -min missing-underflow
|
||||
= log1p tonearest ldbl-128 -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x4p-16384L : -0x4p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-96-intel -0x2p-16384L : -0x2.0000000000000008p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-96-intel -0x2p-16384L : -0x2.0000000000000008p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-96-intel -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-96-m68k -0x2p-16384L : -0x2.0000000000000004p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-96-m68k -0x2p-16384L : -0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-96-m68k -0x2p-16384L : -0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-96-m68k -0x2p-16384L : -0x2p-16384L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x2p-16384L : -0x2.0000000000000000000000000004p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x2p-16384L : -0x2.0000000000000000000000000004p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x2p-16384L : -0x2p-16384L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward dbl-64 -0x8p-972 : -0x8.0000000000008p-972 : inexact-ok
|
||||
= log1p tonearest dbl-64 -0x8p-972 : -0x8p-972 : inexact-ok
|
||||
= log1p towardzero dbl-64 -0x8p-972 : -0x8p-972 : inexact-ok
|
||||
@ -143482,11 +143482,11 @@ log1p -min missing-underflow
|
||||
= log1p tonearest ldbl-128ibm -0x8p-972L : -0x8p-972L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128ibm -0x8p-972L : -0x8p-972L : inexact-ok underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128ibm -0x8p-972L : -0x8p-972L : inexact-ok underflow-ok errno-erange-ok
|
||||
log1p -min_subnorm missing-underflow
|
||||
= log1p downward flt-32 -0x8p-152f : -0x1p-148f : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
log1p -min_subnorm
|
||||
= log1p downward flt-32 -0x8p-152f : -0x1p-148f : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward flt-32 -0x8p-152f : -0x8p-152f : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward dbl-64 -0x8p-152 : -0x8.0000000000008p-152 : inexact-ok
|
||||
= log1p tonearest dbl-64 -0x8p-152 : -0x8p-152 : inexact-ok
|
||||
= log1p towardzero dbl-64 -0x8p-152 : -0x8p-152 : inexact-ok
|
||||
@ -143507,10 +143507,10 @@ log1p -min_subnorm missing-underflow
|
||||
= log1p tonearest ldbl-128ibm -0x8p-152L : -0x8p-152L : inexact-ok
|
||||
= log1p towardzero ldbl-128ibm -0x8p-152L : -0x8p-152L : inexact-ok
|
||||
= log1p upward ldbl-128ibm -0x8p-152L : -0x8p-152L : inexact-ok
|
||||
= log1p downward dbl-64 -0x4p-1076 : -0x8p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward dbl-64 -0x4p-1076 : -0x8p-1076 : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward dbl-64 -0x4p-1076 : -0x4p-1076 : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-96-intel -0x4p-1076L : -0x4.0000000000000008p-1076L : inexact-ok
|
||||
= log1p tonearest ldbl-96-intel -0x4p-1076L : -0x4p-1076L : inexact-ok
|
||||
= log1p towardzero ldbl-96-intel -0x4p-1076L : -0x4p-1076L : inexact-ok
|
||||
@ -143523,34 +143523,34 @@ log1p -min_subnorm missing-underflow
|
||||
= log1p tonearest ldbl-128 -0x4p-1076L : -0x4p-1076L : inexact-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-1076L : -0x4p-1076L : inexact-ok
|
||||
= log1p upward ldbl-128 -0x4p-1076L : -0x4p-1076L : inexact-ok
|
||||
= log1p downward ldbl-128ibm -0x4p-1076L : -0x8p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-96-intel -0x8p-16448L : -0x1p-16444L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-96-m68k -0x8p-16448L : -0xcp-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x8p-16448L : -0x8.000000000004p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-96-m68k -0x4p-16448L : -0x8p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x4p-16448L : -0x4.000000000004p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x4p-16496L : -0x8p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow underflow-ok errno-erange-ok
|
||||
= log1p downward ldbl-128ibm -0x4p-1076L : -0x8p-1076L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128ibm -0x4p-1076L : -0x4p-1076L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-96-intel -0x8p-16448L : -0x1p-16444L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-96-intel -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-96-m68k -0x8p-16448L : -0xcp-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-96-m68k -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x8p-16448L : -0x8.000000000004p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x8p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-96-m68k -0x4p-16448L : -0x8p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-96-m68k -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x4p-16448L : -0x4.000000000004p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x4p-16448L : -0x4p-16448L : inexact-ok underflow errno-erange-ok
|
||||
= log1p downward ldbl-128 -0x4p-16496L : -0x8p-16496L : inexact-ok underflow errno-erange-ok
|
||||
= log1p tonearest ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow errno-erange-ok
|
||||
= log1p towardzero ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow errno-erange-ok
|
||||
= log1p upward ldbl-128 -0x4p-16496L : -0x4p-16496L : inexact-ok underflow errno-erange-ok
|
||||
log1p 0x1p10
|
||||
= log1p downward flt-32 0x4p+8f : 0x6.eeb4ep+0f : inexact-ok
|
||||
= log1p tonearest flt-32 0x4p+8f : 0x6.eeb4e8p+0f : inexact-ok
|
||||
|
||||
@ -17,6 +17,13 @@ RCSID("$NetBSD: s_log1p.S,v 1.7 1995/05/09 00:10:58 jtc Exp $")
|
||||
limit: .double 0.29
|
||||
one: .double 1.0
|
||||
|
||||
.section .rodata.cst8,"aM",@progbits,8
|
||||
|
||||
.p2align 3
|
||||
.type dbl_min,@object
|
||||
dbl_min: .byte 0, 0, 0, 0, 0, 0, 0x10, 0
|
||||
ASM_SIZE_DIRECTIVE(dbl_min)
|
||||
|
||||
/*
|
||||
* Use the fyl2xp1 function when the argument is in the range -0.29 to 0.29,
|
||||
* otherwise fyl2x with the needed extra computation.
|
||||
@ -55,7 +62,25 @@ ENTRY(__log1p)
|
||||
ret
|
||||
|
||||
2: fyl2xp1
|
||||
ret
|
||||
#ifdef PIC
|
||||
fldl dbl_min@GOTOFF(%edx)
|
||||
#else
|
||||
fldl dbl_min
|
||||
#endif
|
||||
fld %st(1)
|
||||
fabs
|
||||
fucompp
|
||||
fnstsw
|
||||
sahf
|
||||
jnc 1f
|
||||
subl $8, %esp
|
||||
cfi_adjust_cfa_offset (8)
|
||||
fld %st(0)
|
||||
fmul %st(0)
|
||||
fstpl (%esp)
|
||||
addl $8, %esp
|
||||
cfi_adjust_cfa_offset (-8)
|
||||
1: ret
|
||||
|
||||
3: jp 4b // in case x is ±Inf
|
||||
fstp %st(1)
|
||||
|
||||
@ -17,6 +17,13 @@ RCSID("$NetBSD: s_log1pf.S,v 1.4 1995/05/09 00:13:05 jtc Exp $")
|
||||
limit: .float 0.29
|
||||
one: .float 1.0
|
||||
|
||||
.section .rodata.cst4,"aM",@progbits,4
|
||||
|
||||
.p2align 2
|
||||
.type flt_min,@object
|
||||
flt_min: .byte 0, 0, 0x80, 0
|
||||
ASM_SIZE_DIRECTIVE(flt_min)
|
||||
|
||||
/*
|
||||
* Use the fyl2xp1 function when the argument is in the range -0.29 to 0.29,
|
||||
* otherwise fyl2x with the needed extra computation.
|
||||
@ -55,7 +62,25 @@ ENTRY(__log1pf)
|
||||
ret
|
||||
|
||||
2: fyl2xp1
|
||||
ret
|
||||
#ifdef PIC
|
||||
flds flt_min@GOTOFF(%edx)
|
||||
#else
|
||||
flds flt_min
|
||||
#endif
|
||||
fld %st(1)
|
||||
fabs
|
||||
fucompp
|
||||
fnstsw
|
||||
sahf
|
||||
jnc 1f
|
||||
subl $4, %esp
|
||||
cfi_adjust_cfa_offset (4)
|
||||
fld %st(0)
|
||||
fmul %st(0)
|
||||
fstps (%esp)
|
||||
addl $4, %esp
|
||||
cfi_adjust_cfa_offset (-4)
|
||||
1: ret
|
||||
|
||||
3: jp 4b // in case x is ±Inf
|
||||
fstp %st(1)
|
||||
|
||||
@ -78,6 +78,7 @@
|
||||
* See HP-15C Advanced Functions Handbook, p.193.
|
||||
*/
|
||||
|
||||
#include <float.h>
|
||||
#include <math.h>
|
||||
#include <math_private.h>
|
||||
|
||||
@ -118,7 +119,14 @@ __log1p (double x)
|
||||
{
|
||||
math_force_eval (two54 + x); /* raise inexact */
|
||||
if (ax < 0x3c900000) /* |x| < 2**-54 */
|
||||
{
|
||||
if (fabs (x) < DBL_MIN)
|
||||
{
|
||||
double force_underflow = x * x;
|
||||
math_force_eval (force_underflow);
|
||||
}
|
||||
return x;
|
||||
}
|
||||
else
|
||||
return x - x * x * 0.5;
|
||||
}
|
||||
|
||||
@ -13,6 +13,7 @@
|
||||
* ====================================================
|
||||
*/
|
||||
|
||||
#include <float.h>
|
||||
#include <math.h>
|
||||
#include <math_private.h>
|
||||
|
||||
@ -48,7 +49,14 @@ __log1pf(float x)
|
||||
if(ax<0x31000000) { /* |x| < 2**-29 */
|
||||
math_force_eval(two25+x); /* raise inexact */
|
||||
if (ax<0x24800000) /* |x| < 2**-54 */
|
||||
{
|
||||
if (fabsf (x) < FLT_MIN)
|
||||
{
|
||||
float force_underflow = x * x;
|
||||
math_force_eval (force_underflow);
|
||||
}
|
||||
return x;
|
||||
}
|
||||
else
|
||||
return x - x*x*(float)0.5;
|
||||
}
|
||||
|
||||
@ -53,6 +53,7 @@
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
|
||||
#include <float.h>
|
||||
#include <math.h>
|
||||
#include <math_private.h>
|
||||
|
||||
@ -140,6 +141,11 @@ __log1pl (long double xm1)
|
||||
|
||||
if ((hx & 0x7fffffff) < 0x3f8e0000)
|
||||
{
|
||||
if (fabsl (xm1) < LDBL_MIN)
|
||||
{
|
||||
long double force_underflow = xm1 * xm1;
|
||||
math_force_eval (force_underflow);
|
||||
}
|
||||
if ((int) xm1 == 0)
|
||||
return xm1;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user