/usr/lib/pypy/include/pymath.h is in pypy-dev 5.0.1+dfsg-4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | #ifndef Py_PYMATH_H
#define Py_PYMATH_H
/**************************************************************************
Symbols and macros to supply platform-independent interfaces to mathematical
functions and constants
**************************************************************************/
/* HUGE_VAL is supposed to expand to a positive double infinity. Python
* uses Py_HUGE_VAL instead because some platforms are broken in this
* respect. We used to embed code in pyport.h to try to worm around that,
* but different platforms are broken in conflicting ways. If you're on
* a platform where HUGE_VAL is defined incorrectly, fiddle your Python
* config to #define Py_HUGE_VAL to something that works on your platform.
*/
#ifndef Py_HUGE_VAL
#define Py_HUGE_VAL HUGE_VAL
#endif
/* Py_NAN
* A value that evaluates to a NaN. On IEEE 754 platforms INF*0 or
* INF/INF works. Define Py_NO_NAN in pyconfig.h if your platform
* doesn't support NaNs.
*/
#if !defined(Py_NAN) && !defined(Py_NO_NAN)
#if !defined(__INTEL_COMPILER)
#define Py_NAN (Py_HUGE_VAL * 0.)
#else /* __INTEL_COMPILER */
#if defined(ICC_NAN_STRICT)
#pragma float_control(push)
#pragma float_control(precise, on)
#pragma float_control(except, on)
#if defined(_MSC_VER)
__declspec(noinline)
#else /* Linux */
__attribute__((noinline))
#endif /* _MSC_VER */
static double __icc_nan()
{
return sqrt(-1.0);
}
#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};
#define Py_NAN (__nan_store.__icc_nan)
#endif /* ICC_NAN_STRICT */
#endif /* __INTEL_COMPILER */
#endif
#endif /* Py_PYMATH_H */
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