source: buchla-68k/libsm/strcmp.c

/*
   =============================================================================
        strcmp.c -- compare strings
        Version 2 -- 1987-06-15

        Compare strings:  s1>s2: >0  s1==s2: 0  s1<s2: <0
   =============================================================================
*/

#include "ram.h"

int16_t strcmp(int8_t *s1, int8_t *s2)
{
        if(s1 == s2)
                return(0);

        while(*s1 == *s2++)
                if(*s1++ == '\0')
                         return(0);

        return((int16_t)*s1 - (int16_t)*--s2);
}