cscg22-gearboy

CSCG 2022 Challenge 'Gearboy'
git clone https://git.sinitax.com/sinitax/cscg22-gearboy
Log | Files | Refs | sfeed.txt

string.c (675B)

      1/** Dumb strings hack.
      2*/
      3#include <string.h>
      4#include <gbdk/gbdk-lib.h>
      5
      6#if USE_C_STRCPY
      7char *strcpy(char *dest, const char *source) NONBANKED
      8{
      9    char *d = dest;
     10    const char *s = source;
     11    while (*d = *s) d++, s++;
     12    return dest;
     13}
     14#endif
     15
     16#if USE_C_MEMCPY
     17void *memcpy(void *dest, const void *source, size_t count) NONBANKED
     18{
     19    char *d = dest;
     20    const char *s = source;
     21    while (count--) {
     22        *d = *s;
     23        d++;
     24        s++;
     25    }
     26    return dest;
     27}
     28#endif
     29
     30#if USE_C_STRCMP
     31int strcmp(const char *s1, const char *s2) {
     32    char ret = 0;
     33    while (!(ret = *s1 - *s2) && *s2) ++s1, ++s2;
     34    return (ret < 0) ? -1 : ((ret > 0) ? 1 : 0);
     35}
     36#endif