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| author | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2018-01-30 14:48:22 +0000 |
|---|---|---|
| committer | Szabolcs Nagy <szabolcs.nagy@arm.com> | 2018-02-12 11:33:33 +0000 |
| commit | de800d83059dbedb7d151580f0a3bdc9eaf37340 (patch) | |
| tree | 9c35197ab9d9788c73bd6aa5d7d19eb90979f629 /sysdeps/ieee754/dbl-64/uexp.h | |
| parent | c3d466cba1692708a19c6ff829d0386c83a0c6e5 (diff) | |
| download | glibc-de800d83059dbedb7d151580f0a3bdc9eaf37340.tar.gz | |
Remove slow paths from exp
Remove the __slowexp code, so exp is no longer correctly rounded. The
result is computed to about 70 bits precision so the worst case ulp
error is about 0.500007 in nearest rounding mode.
* manual/probes.texi: Remove slowexp probes.
* math/Makefile: Remove slowexp.
* sysdeps/generic/math_private.h (__slowexp): Remove.
* sysdeps/ieee754/dbl-64/e_exp.c (__ieee754_exp): Remove __slowexp and
document error bounds.
* sysdeps/i386/fpu/slowexp.c: Remove.
* sysdeps/ia64/fpu/slowexp.c: Remove.
* sysdeps/ieee754/dbl-64/slowexp.c: Remove.
* sysdeps/ieee754/dbl-64/uexp.h (err_0): Remove.
* sysdeps/m68k/m680x0/fpu/slowexp.c: Remove.
* sysdeps/powerpc/power4/fpu/Makefile (CPPFLAGS-slowexp.c): Remove.
* sysdeps/x86_64/fpu/multiarch/Makefile: Remove slowexp-fma.
* sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Remove.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Remove.
* sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Remove.
* sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Remove.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Remove.
* sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Remove.
Diffstat (limited to 'sysdeps/ieee754/dbl-64/uexp.h')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/uexp.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sysdeps/ieee754/dbl-64/uexp.h b/sysdeps/ieee754/dbl-64/uexp.h index 2edf530b69..64ab2c8fca 100644 --- a/sysdeps/ieee754/dbl-64/uexp.h +++ b/sysdeps/ieee754/dbl-64/uexp.h @@ -29,8 +29,7 @@ #include "mydefs.h" -const static double zero = 0.0, hhuge = 1.0e300, tiny = 1.0e-300, -err_0 = 1.000014; +const static double zero = 0.0, hhuge = 1.0e300, tiny = 1.0e-300; const static int4 bigint = 0x40862002, badint = 0x40876000,smallint = 0x3C8fffff; const static int4 hugeint = 0x7FFFFFFF, infint = 0x7ff00000; |