text: /*
   * Derived from:
   * http://www.kernel.org/pub/linux/libs/klibc/
   */
  /*
   * strcmp.c
   */
  
  #include <string.h>
  
  int strcmp(const char *s1, const char *s2) {
    const unsigned char *c1 = (const unsigned char *)s1;
    const unsigned char *c2 = (const unsigned char *)s2;
    unsigned char ch;
    int d = 0;
  
    while (1) {
      d = (int)(ch = *c1++) - (int)*c2++;
      if (d || !ch)
        break;
    }
  
    return d;
  }
  