1  
       2  /* Float object interface */
       3  
       4  /*
       5  PyFloatObject represents a (double precision) floating point number.
       6  */
       7  
       8  #ifndef Py_FLOATOBJECT_H
       9  #define Py_FLOATOBJECT_H
      10  #ifdef __cplusplus
      11  extern "C" {
      12  #endif
      13  
      14  PyAPI_DATA(PyTypeObject) PyFloat_Type;
      15  
      16  #define PyFloat_Check(op) PyObject_TypeCheck(op, &PyFloat_Type)
      17  #define PyFloat_CheckExact(op) Py_IS_TYPE(op, &PyFloat_Type)
      18  
      19  #define Py_RETURN_NAN return PyFloat_FromDouble(Py_NAN)
      20  
      21  #define Py_RETURN_INF(sign)                          \
      22      do {                                             \
      23          if (copysign(1., sign) == 1.) {              \
      24              return PyFloat_FromDouble(Py_HUGE_VAL);  \
      25          }                                            \
      26          else {                                       \
      27              return PyFloat_FromDouble(-Py_HUGE_VAL); \
      28          }                                            \
      29      } while(0)
      30  
      31  PyAPI_FUNC(double) PyFloat_GetMax(void);
      32  PyAPI_FUNC(double) PyFloat_GetMin(void);
      33  PyAPI_FUNC(PyObject*) PyFloat_GetInfo(void);
      34  
      35  /* Return Python float from string PyObject. */
      36  PyAPI_FUNC(PyObject*) PyFloat_FromString(PyObject*);
      37  
      38  /* Return Python float from C double. */
      39  PyAPI_FUNC(PyObject*) PyFloat_FromDouble(double);
      40  
      41  /* Extract C double from Python float.  The macro version trades safety for
      42     speed. */
      43  PyAPI_FUNC(double) PyFloat_AsDouble(PyObject*);
      44  
      45  #ifndef Py_LIMITED_API
      46  #  define Py_CPYTHON_FLOATOBJECT_H
      47  #  include "cpython/floatobject.h"
      48  #  undef Py_CPYTHON_FLOATOBJECT_H
      49  #endif
      50  
      51  #ifdef __cplusplus
      52  }
      53  #endif
      54  #endif /* !Py_FLOATOBJECT_H */