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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 /manual | |
| parent | c3d466cba1692708a19c6ff829d0386c83a0c6e5 (diff) | |
| download | glibc-de800d83059dbedb7d151580f0a3bdc9eaf37340.zip glibc-de800d83059dbedb7d151580f0a3bdc9eaf37340.tar.gz glibc-de800d83059dbedb7d151580f0a3bdc9eaf37340.tar.bz2 | |
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 'manual')
| -rw-r--r-- | manual/probes.texi | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/manual/probes.texi b/manual/probes.texi index 9584838..fa6e38f 100644 --- a/manual/probes.texi +++ b/manual/probes.texi @@ -258,20 +258,6 @@ Unless explicitly mentioned otherwise, a precision of 1 implies 24 bits of precision in the mantissa of the multiple precision number. Hence, a precision level of 32 implies 768 bits of precision in the mantissa. -@deftp Probe slowexp_p6 (double @var{$arg1}, double @var{$arg2}) -This probe is triggered when the @code{exp} function is called with an -input that results in multiple precision computation with precision -6. Argument @var{$arg1} is the input value and @var{$arg2} is the -computed output. -@end deftp - -@deftp Probe slowexp_p32 (double @var{$arg1}, double @var{$arg2}) -This probe is triggered when the @code{exp} function is called with an -input that results in multiple precision computation with precision -32. Argument @var{$arg1} is the input value and @var{$arg2} is the -computed output. -@end deftp - @deftp Probe slowatan2 (int @var{$arg1}, double @var{$arg2}, double @var{$arg3}, double @var{$arg4}) This probe is triggered when the @code{atan2} function is called with an input that results in multiple precision computation. Argument |