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| author | Guido van Rossum <guido@dropbox.com> | 2016-08-15 16:12:52 (GMT) |
|---|---|---|
| committer | Guido van Rossum <guido@dropbox.com> | 2016-08-15 16:12:52 (GMT) |
| commit | 0a891d70ded5fa8b1e6491529a3b531f521b5ae1 (patch) | |
| tree | e26a1c826888bbd3c40b7775406062ab1b32cca5 /Include/pymath.h | |
| parent | 6349612a8e5d5fcb3405e59242b6a2df3127585a (diff) | |
| download | cpython-0a891d70ded5fa8b1e6491529a3b531f521b5ae1.zip cpython-0a891d70ded5fa8b1e6491529a3b531f521b5ae1.tar.gz cpython-0a891d70ded5fa8b1e6491529a3b531f521b5ae1.tar.bz2 | |
Issue #12345: Add mathemathcal constant tau to math and cmath.
Patch by Lisa Roach. See also PEP 628.
Diffstat (limited to 'Include/pymath.h')
| -rw-r--r-- | Include/pymath.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Include/pymath.h b/Include/pymath.h index ed76053..894362e 100644 --- a/Include/pymath.h +++ b/Include/pymath.h @@ -55,6 +55,12 @@ extern double pow(double, double); #define Py_MATH_E 2.7182818284590452354 #endif +/* Tau (2pi) to 40 digits, taken from tauday.com/tau-digits. */ +#ifndef Py_MATH_TAU +#define Py_MATH_TAU 6.2831853071795864769252867665590057683943L +#endif + + /* On x86, Py_FORCE_DOUBLE forces a floating-point number out of an x87 FPU register and into a 64-bit memory location, rounding from extended precision to double precision in the process. On other platforms it does |