diff options
Diffstat (limited to 'Include/pymath.h')
| -rw-r--r-- | Include/pymath.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Include/pymath.h b/Include/pymath.h index 1ea9ac1437a..7216a092d17 100644 --- a/Include/pymath.h +++ b/Include/pymath.h @@ -37,7 +37,7 @@ extern double pow(double, double); #endif /* __STDC__ */ #endif /* _MSC_VER */ -/* High precision defintion of pi and e (Euler) +/* High precision definition of pi and e (Euler) * The values are taken from libc6's math.h. */ #ifndef Py_MATH_PIl @@ -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 @@ -169,7 +175,7 @@ PyAPI_FUNC(void) _Py_set_387controlword(unsigned short); #pragma float_control (pop) #define Py_NAN __icc_nan() #else /* ICC_NAN_RELAXED as default for Intel Compiler */ - static union { unsigned char buf[8]; double __icc_nan; } __nan_store = {0,0,0,0,0,0,0xf8,0x7f}; + static const union { unsigned char buf[8]; double __icc_nan; } __nan_store = {0,0,0,0,0,0,0xf8,0x7f}; #define Py_NAN (__nan_store.__icc_nan) #endif /* ICC_NAN_STRICT */ #endif /* __INTEL_COMPILER */ |