gbdk-releases/gbdk-lib/libc/string.c

/** Dumb strings hack.
*/
#include <gbdk-lib.h>
#include <string.h>

#if USE_C_STRCPY
char *strcpy(char *dest, const char *source) NONBANKED
{
    char *d = dest;
    const char *s = source;
    while (*d = *s)
	d++, s++;
    return dest;
}
#endif

#if USE_C_MEMCPY
void *memcpy(void *dest, const void *source, size_t count) NONBANKED
{
    char *d = dest;
    const char *s = source;
    while (count--) {
	*d = *s;
	d++;
	s++;
    }
    return dest;
}
#endif

#if USE_C_STRCMP
int strcmp(const char *s1, const char *s2) NONBANKED
{
    char ret = 0;

    while (!(ret = *s1 - *s2) && *s2)
	++s1, ++s2;

    if (ret < 0)
	return -1;
    else if (ret > 0)
	return 1;
    return 0;
}
#endif