ref: f7ecd7063b03eb0604490bb2e3d335cbf3873813
dir: /lib/c/src/strcmp.c/
#include <string.h> #undef strcmp int strcmp(const char *s1, const char *s2) { while (*s1 && *s2 && *s1 == *s2) ++s1, ++s2; return *(unsigned char *)s1 - *(unsigned char *)s2; }