include/python3.12/floatobject.h

0001
0002 /* Float object interface */
0003
0004 /*
0005 PyFloatObject represents a (double precision) floating-point number.
0006 */
0007
0008 #ifndef Py_FLOATOBJECT_H
0009 #define Py_FLOATOBJECT_H
0010 #ifdef __cplusplus
0011 extern "C" {
0012 #endif
0013
0014 PyAPI_DATA(PyTypeObject) PyFloat_Type;
0015
0016 #define PyFloat_Check(op) PyObject_TypeCheck(op, &PyFloat_Type)
0017 #define PyFloat_CheckExact(op) Py_IS_TYPE((op), &PyFloat_Type)
0018
0019 #define Py_RETURN_NAN return PyFloat_FromDouble(Py_NAN)
0020
0021 #define Py_RETURN_INF(sign)                          \
0022     do {                                             \
0023         if (copysign(1., sign) == 1.) {              \
0024             return PyFloat_FromDouble(Py_HUGE_VAL);  \
0025         }                                            \
0026         else {                                       \
0027             return PyFloat_FromDouble(-Py_HUGE_VAL); \
0028         }                                            \
0029     } while(0)
0030
0031 PyAPI_FUNC(double) PyFloat_GetMax(void);
0032 PyAPI_FUNC(double) PyFloat_GetMin(void);
0033 PyAPI_FUNC(PyObject*) PyFloat_GetInfo(void);
0034
0035 /* Return Python float from string PyObject. */
0036 PyAPI_FUNC(PyObject*) PyFloat_FromString(PyObject*);
0037
0038 /* Return Python float from C double. */
0039 PyAPI_FUNC(PyObject*) PyFloat_FromDouble(double);
0040
0041 /* Extract C double from Python float.  The macro version trades safety for
0042    speed. */
0043 PyAPI_FUNC(double) PyFloat_AsDouble(PyObject*);
0044
0045 #ifndef Py_LIMITED_API
0046 #  define Py_CPYTHON_FLOATOBJECT_H
0047 #  include "cpython/floatobject.h"
0048 #  undef Py_CPYTHON_FLOATOBJECT_H
0049 #endif
0050
0051 #ifdef __cplusplus
0052 }
0053 #endif
0054 #endif /* !Py_FLOATOBJECT_H */