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| author | Mark Dickinson <dickinsm@gmail.com> | 2009-04-16 19:52:09 (GMT) |
|---|---|---|
| committer | Mark Dickinson <dickinsm@gmail.com> | 2009-04-16 19:52:09 (GMT) |
| commit | b08a53a99def3fa949643974f713b5b189e21bc7 (patch) | |
| tree | 6f7663d510099fd7acfa328ae5a5c88e3eddb1a7 /Include/pymath.h | |
| parent | 579b65c2d695eb468fb97568ff7d2ad9d261b2b3 (diff) | |
| download | cpython-b08a53a99def3fa949643974f713b5b189e21bc7.zip cpython-b08a53a99def3fa949643974f713b5b189e21bc7.tar.gz cpython-b08a53a99def3fa949643974f713b5b189e21bc7.tar.bz2 | |
Issue #1580: use short float repr where possible.
- incorporate and adapt David Gay's dtoa and strtod
into the Python core
- on platforms where we can use Gay's code (almost
all!), repr(float) is based on the shortest
sequence of decimal digits that rounds correctly.
- add sys.float_repr_style attribute to indicate
whether we're using Gay's code or not
- add autoconf magic to detect and enable SSE2
instructions on x86/gcc
- slight change to repr and str: repr switches
to exponential notation at 1e16 instead of
1e17, str switches at 1e11 instead of 1e12
Diffstat (limited to 'Include/pymath.h')
| -rw-r--r-- | Include/pymath.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Include/pymath.h b/Include/pymath.h index 6ad174d..8872e8a 100644 --- a/Include/pymath.h +++ b/Include/pymath.h @@ -92,6 +92,11 @@ PyAPI_FUNC(double) _Py_force_double(double); # endif #endif +#ifdef HAVE_GCC_ASM_FOR_X87 +PyAPI_FUNC(unsigned short) _Py_get_387controlword(void); +PyAPI_FUNC(void) _Py_set_387controlword(unsigned short); +#endif + /* Py_IS_NAN(X) * Return 1 if float or double arg is a NaN, else 0. * Caution: |