cpython-withatomic / Python / pystrcmp.c

/* Cross platform case insensitive string compare functions

#include "Python.h"

PyOS_mystrnicmp(const char *s1, const char *s2, Py_ssize_t size)
	if (size == 0)
		return 0;
	while ((--size > 0) &&
	       (tolower((unsigned)*s1) == tolower((unsigned)*s2))) {
		if (!*s1++ || !*s2++)
	return tolower((unsigned)*s1) - tolower((unsigned)*s2);

PyOS_mystricmp(const char *s1, const char *s2)
	while (*s1 && (tolower((unsigned)*s1++) == tolower((unsigned)*s2++))) {
	return (tolower((unsigned)*s1) - tolower((unsigned)*s2));
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