deimos.python.floatobject

Mirror floatobject.h

Members

Functions

PyFloat_AS_DOUBLE double PyFloat_AS_DOUBLE(PyObject* op): Extract C double from Python float. The macro version trades safety for speed.
PyFloat_AsDouble double PyFloat_AsDouble(PyObject* ): Extract C double from Python float. The macro version trades safety for speed.
PyFloat_AsReprString void PyFloat_AsReprString(char* , PyFloatObject* v): Write repr(v) into the char buffer argument, followed by null byte. The buffer must be "big enough"; >= 100 is very safe. PyFloat_AsReprString(buf, x) strives to print enough digits so that Availability: 2.* PyFloat_FromString(buf) then reproduces x exactly.
PyFloat_AsString void PyFloat_AsString(char* , PyFloatObject* v): Write str(v) into the char buffer argument, followed by null byte. The buffer must be "big enough"; >= 100 is very safe. Note that it's unusual to be able to get back the float you started with from PyFloat_AsString's result -- use PyFloat_AsReprString() if you want to Availability: 2.* preserve precision across conversions.
PyFloat_Check int PyFloat_Check(PyObject* op): _
PyFloat_CheckExact int PyFloat_CheckExact(PyObject* op): _
PyFloat_ClearFreeList int PyFloat_ClearFreeList(): free list api Availability: >= 2.6
PyFloat_FromDouble PyObject* PyFloat_FromDouble(double ): Return Python float from C double.
PyFloat_FromString PyObject* PyFloat_FromString(PyObject* ): Availability: 3.*
PyFloat_FromString
PyObject* PyFloat_FromString(PyObject* , char** junk): Return Python float from string PyObject. Second argument ignored on input, and, if non-NULL, NULL is stored into *junk (this tried to serve a Availability: 2.* purpose once but can't be made to work as intended).
PyFloat_GetInfo PyObject* PyFloat_GetInfo(): Availability: >= 2.6
PyFloat_GetMax double PyFloat_GetMax(): Availability: >= 2.6
PyFloat_GetMin double PyFloat_GetMin(): Availability: >= 2.6
_PyFloat_DebugMallocStats void _PyFloat_DebugMallocStats(FILE* out_): Availability: >= 2.7
_PyFloat_Digits int _PyFloat_Digits(char* buf, double v, int* signum): Used to get the important decimal digits of a double Availability: >= 2.6
_PyFloat_DigitsInit void _PyFloat_DigitsInit(): Availability: >= 2.6
_PyFloat_FormatAdvanced PyObject* _PyFloat_FormatAdvanced(PyObject* obj, Py_UNICODE* format_spec, Py_ssize_t format_spec_len): Availability: 3.*
_PyFloat_FormatAdvanced PyObject* _PyFloat_FormatAdvanced(PyObject* obj, char* format_spec, Py_ssize_t format_spec_len): Format the object based on the format_spec, as defined in PEP 3101 Availability: >= 2.6 (Advanced String Formatting).
_PyFloat_Pack4 int _PyFloat_Pack4(double x, ubyte* p, int le)
_PyFloat_Pack8 int _PyFloat_Pack8(double x, ubyte* p, int le): _PyFloat_{Pack,Unpack}{4,8}
_PyFloat_Repr int _PyFloat_Repr(double x, char* p, size_t len): Availability: 3.*
_PyFloat_Unpack4 double _PyFloat_Unpack4(const(ubyte)* p, int le)
_PyFloat_Unpack8 double _PyFloat_Unpack8(const(ubyte)* p, int le): The unpack routines read 4 or 8 bytes, starting at p. le is a bool argument, true if the string is in little-endian format (exponent last, at p+3 or p+7), false if big-endian (exponent first, at p). Return value: The unpacked double. On error, this is -1.0 and PyErr_Occurred() is true (and an exception is set, most likely OverflowError). Note that on a non-IEEE platform this will refuse to unpack a string that represents a NaN or infinity.
_Py_double_round PyObject* _Py_double_round(double x, int ndigits): Round a C double x to the closest multiple of 10**-ndigits. Returns a Python float on success, or NULL (with an appropriate exception set) on failure. Used in builtin_round in bltinmodule.c. Availability: >= 2.7

Structs

PyFloatObject struct PyFloatObject: subclass of PyObject

deimos.python.floatobject

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