Edit: longobject.h
#ifndef Py_CPYTHON_LONGOBJECT_H # error "this header file must not be included directly" #endif PyAPI_FUNC(int) _PyLong_AsInt(PyObject *); PyAPI_FUNC(int) _PyLong_UnsignedShort_Converter(PyObject *, void *); PyAPI_FUNC(int) _PyLong_UnsignedInt_Converter(PyObject *, void *); PyAPI_FUNC(int) _PyLong_UnsignedLong_Converter(PyObject *, void *); PyAPI_FUNC(int) _PyLong_UnsignedLongLong_Converter(PyObject *, void *); PyAPI_FUNC(int) _PyLong_Size_t_Converter(PyObject *, void *); /* _PyLong_Frexp returns a double x and an exponent e such that the true value is approximately equal to x * 2**e. e is >= 0. x is 0.0 if and only if the input is 0 (in which case, e and x are both zeroes); otherwise, 0.5 <= abs(x) < 1.0. On overflow, which is possible if the number of bits doesn't fit into a Py_ssize_t, sets OverflowError and returns -1.0 for x, 0 for e. */ PyAPI_FUNC(double) _PyLong_Frexp(PyLongObject *a, Py_ssize_t *e); PyAPI_FUNC(PyObject *) PyLong_FromUnicodeObject(PyObject *u, int base); PyAPI_FUNC(PyObject *) _PyLong_FromBytes(const char *, Py_ssize_t, int); /* _PyLong_Sign. Return 0 if v is 0, -1 if v < 0, +1 if v > 0. v must not be NULL, and must be a normalized long. There are no error cases. */ PyAPI_FUNC(int) _PyLong_Sign(PyObject *v); /* _PyLong_NumBits. Return the number of bits needed to represent the absolute value of a long. For example, this returns 1 for 1 and -1, 2 for 2 and -2, and 2 for 3 and -3. It returns 0 for 0. v must not be NULL, and must be a normalized long. (size_t)-1 is returned and OverflowError set if the true result doesn't fit in a size_t. */ PyAPI_FUNC(size_t) _PyLong_NumBits(PyObject *v); /* _PyLong_DivmodNear. Given integers a and b, compute the nearest integer q to the exact quotient a / b, rounding to the nearest even integer in the case of a tie. Return (q, r), where r = a - q*b. The remainder r will satisfy abs(r) <= abs(b)/2, with equality possible only if q is even. */ PyAPI_FUNC(PyObject *) _PyLong_DivmodNear(PyObject *, PyObject *); /* _PyLong_FromByteArray: View the n unsigned bytes as a binary integer in base 256, and return a Python int with the same numeric value. If n is 0, the integer is 0. Else: If little_endian is 1/true, bytes[n-1] is the MSB and bytes[0] the LSB; else (little_endian is 0/false) bytes[0] is the MSB and bytes[n-1] the LSB. If is_signed is 0/false, view the bytes as a non-negative integer. If is_signed is 1/true, view the bytes as a 2's-complement integer, non-negative if bit 0x80 of the MSB is clear, negative if set. Error returns: + Return NULL with the appropriate exception set if there's not enough memory to create the Python int. */ PyAPI_FUNC(PyObject *) _PyLong_FromByteArray( const unsigned char* bytes, size_t n, int little_endian, int is_signed); /* _PyLong_AsByteArray: Convert the least-significant 8*n bits of long v to a base-256 integer, stored in array bytes. Normally return 0, return -1 on error. If little_endian is 1/true, store the MSB at bytes[n-1] and the LSB at bytes[0]; else (little_endian is 0/false) store the MSB at bytes[0] and the LSB at bytes[n-1]. If is_signed is 0/false, it's an error if v < 0; else (v >= 0) n bytes are filled and there's nothing special about bit 0x80 of the MSB. If is_signed is 1/true, bytes is filled with the 2's-complement representation of v's value. Bit 0x80 of the MSB is the sign bit. Error returns (-1): + is_signed is 0 and v < 0. TypeError is set in this case, and bytes isn't altered. + n isn't big enough to hold the full mathematical value of v. For example, if is_signed is 0 and there are more digits in the v than fit in n; or if is_signed is 1, v < 0, and n is just 1 bit shy of being large enough to hold a sign bit. OverflowError is set in this case, but bytes holds the least-significant n bytes of the true value. */ PyAPI_FUNC(int) _PyLong_AsByteArray(PyLongObject* v, unsigned char* bytes, size_t n, int little_endian, int is_signed); /* _PyLong_Format: Convert the long to a string object with given base, appending a base prefix of 0[box] if base is 2, 8 or 16. */ PyAPI_FUNC(PyObject *) _PyLong_Format(PyObject *obj, int base); /* For use by the gcd function in mathmodule.c */ PyAPI_FUNC(PyObject *) _PyLong_GCD(PyObject *, PyObject *); PyAPI_FUNC(PyObject *) _PyLong_Rshift(PyObject *, size_t); PyAPI_FUNC(PyObject *) _PyLong_Lshift(PyObject *, size_t);
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