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// Symbols and macros to supply platform-independent interfaces to mathematical

// functions and constants.

#ifndef Py_PYMATH_H

#define Py_PYMATH_H

/* High precision definition of pi and e (Euler)

* The values are taken from libc6's math.h.

#ifndef Py_MATH_PIl

#define Py_MATH_PIl 3.1415926535897932384626433832795029L

#endif

#ifndef Py_MATH_PI

#define Py_MATH_PI 3.14159265358979323846

#endif

#ifndef Py_MATH_El

#define Py_MATH_El 2.7182818284590452353602874713526625L

#endif

#ifndef Py_MATH_E

#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

// Py_IS_NAN(X)

// Return 1 if float or double arg is a NaN, else 0.

// Soft deprecated since Python 3.14, use isnan() instead.

#define Py_IS_NAN(X) isnan(X)

// Py_IS_INFINITY(X)

// Return 1 if float or double arg is an infinity, else 0.

// Soft deprecated since Python 3.14, use isinf() instead.

#define Py_IS_INFINITY(X) isinf(X)

// Py_IS_FINITE(X)

// Return 1 if float or double arg is neither infinite nor NAN, else 0.

// Soft deprecated since Python 3.14, use isfinite() instead.

#define Py_IS_FINITE(X) isfinite(X)

// Py_INFINITY: Value that evaluates to a positive double infinity.

#ifndef Py_INFINITY

# define Py_INFINITY ((double)INFINITY)

#endif

/* Py_HUGE_VAL should always be the same as Py_INFINITY. But historically

* this was not reliable and Python did not require IEEE floats and C99

* conformity. The macro was soft deprecated in Python 3.14, use Py_INFINITY instead.

#ifndef Py_HUGE_VAL

# define Py_HUGE_VAL HUGE_VAL

#endif

/* Py_NAN: Value that evaluates to a quiet Not-a-Number (NaN). The sign is

* undefined and normally not relevant, but e.g. fixed for float("nan").

#if !defined(Py_NAN)

# define Py_NAN ((double)NAN)

#endif

#endif /* Py_PYMATH_H */

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