cpython/Include/intobject.h

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/* Integer object interface */
/*
PyIntObject represents a (long) integer. This is an immutable object;
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an integer cannot change its value after creation.
There are functions to create new integer objects, to test an object
for integer-ness, and to get the integer value. The latter functions
returns -1 and sets errno to EBADF if the object is not an PyIntObject.
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None of the functions should be applied to nil objects.
The type PyIntObject is (unfortunately) exposed here so we can declare
_Py_TrueStruct and _Py_ZeroStruct below; don't use this.
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*/
#ifndef Py_INTOBJECT_H
#define Py_INTOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
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typedef struct {
PyObject_HEAD
long ob_ival;
} PyIntObject;
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extern DL_IMPORT(PyTypeObject) PyInt_Type;
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#define PyInt_Check(op) ((op)->ob_type == &PyInt_Type)
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extern DL_IMPORT(PyObject *) PyInt_FromString(char*, char**, int);
extern DL_IMPORT(PyObject *) PyInt_FromUnicode(Py_UNICODE*, int, int);
extern DL_IMPORT(PyObject *) PyInt_FromLong(long);
extern DL_IMPORT(long) PyInt_AsLong(PyObject *);
extern DL_IMPORT(long) PyInt_GetMax(void);
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/*
False and True are special intobjects used by Boolean expressions.
All values of type Boolean must point to either of these; but in
contexts where integers are required they are integers (valued 0 and 1).
Hope these macros don't conflict with other people's.
Don't forget to apply Py_INCREF() when returning True or False!!!
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*/
extern DL_IMPORT(PyIntObject) _Py_ZeroStruct, _Py_TrueStruct; /* Don't use these directly */
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#define Py_False ((PyObject *) &_Py_ZeroStruct)
#define Py_True ((PyObject *) &_Py_TrueStruct)
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/* Macro, trading safety for speed */
#define PyInt_AS_LONG(op) (((PyIntObject *)(op))->ob_ival)
/* These aren't really part of the Int object, but they're handy; the protos
* are necessary for systems that need the magic of DL_IMPORT and that want
* to have stropmodule as a dynamically loaded module instead of building it
* into the main Python shared library/DLL. Guido thinks I'm weird for
* building it this way. :-) [cjh]
*/
extern DL_IMPORT(unsigned long) PyOS_strtoul(char *, char **, int);
extern DL_IMPORT(long) PyOS_strtol(char *, char **, int);
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTOBJECT_H */