sm64pc/lib/src/string.c

31 lines
594 B
C
Raw Normal View History

2019-08-25 04:46:40 +00:00
#include "libultra_internal.h"
#include <string.h>
2019-11-03 19:36:27 +00:00
2019-08-25 04:46:40 +00:00
void *memcpy(void *dst, const void *src, size_t size) {
u8 *_dst = dst;
const u8 *_src = src;
while (size > 0) {
*_dst++ = *_src++;
size--;
}
return dst;
}
2019-11-03 19:36:27 +00:00
size_t strlen(const char *str) {
const u8 *ptr = (const u8 *) str;
2019-09-01 19:50:50 +00:00
while (*ptr) {
2019-08-25 04:46:40 +00:00
ptr++;
2019-09-01 19:50:50 +00:00
}
2019-11-03 19:36:27 +00:00
return (const char *) ptr - str;
2019-08-25 04:46:40 +00:00
}
2019-11-03 19:36:27 +00:00
char *strchr(const char *str, s32 ch) {
2019-08-25 04:46:40 +00:00
u8 c = ch;
2019-11-03 19:36:27 +00:00
while (*(u8 *)str != c) {
if (*(u8 *)str == 0) {
2019-08-25 04:46:40 +00:00
return NULL;
2019-09-01 19:50:50 +00:00
}
2019-08-25 04:46:40 +00:00
str++;
}
2019-11-03 19:36:27 +00:00
return (char *) str;
2019-08-25 04:46:40 +00:00
}