1# From https://docs.python.org/3/c-api/conversion.html
2
3from .object cimport PyObject
4
5cdef extern from "Python.h":
6    ctypedef struct va_list
7
8    int PyOS_snprintf(char *str, size_t size, const char *format, ...)
9    # Output not more than size bytes to str according to the format
10    # string format and the extra arguments. See the Unix man page snprintf(2).
11
12    int PyOS_vsnprintf(char *str, size_t size, const char *format, va_list va)
13    # Output not more than size bytes to str according to the format
14    # string format and the variable argument list va. Unix man page vsnprintf(2).
15
16    double PyOS_string_to_double(const char *s, char **endptr, PyObject *overflow_exception) except? -1.0
17    # Convert a string s to a double, raising a Python exception on failure. The set of
18    # accepted strings corresponds to the set of strings accepted by Python’s float()
19    # constructor, except that s must not have leading or trailing whitespace.
20    # The conversion is independent of the current locale.
21
22    enum:
23        Py_DTSF_SIGN
24        Py_DTSF_ADD_DOT_0
25        Py_DTSF_ALT
26
27    char* PyOS_double_to_string(double val, char format_code, int precision, int flags, int *ptype) except NULL
28    # Convert a double val to a string using supplied format_code, precision, and flags.
29
30    int PyOS_stricmp(const char *s1, const char *s2)
31    # Case insensitive comparison of strings. The function works almost identically
32    # to strcmp() except that it ignores the case.
33
34    int PyOS_strnicmp(const char *s1, const char *s2, Py_ssize_t  size)
35    # Case insensitive comparison of strings. The function works almost identically
36    # to strncmp() except that it ignores the case.
37