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#include <shared/mem.h>
#include <stdint.h>
void *memchr(const void *s, int c, size_t n) {
const unsigned char *s2 = s;
for (size_t i = 0; i < n; i++) {
if (s2[i] == (unsigned char)c)
return (void*)&s2[i];
}
return NULL;
}
int memcmp(const void *s1, const void *s2, size_t n) {
const unsigned char *c1 = s1, *c2 = s2;
for (size_t i = 0; i < n; i++) {
if (c1[i] != c2[i]) {
if (c1[i] < c2[i]) return -1;
else return 1;
}
}
return 0;
}
void *memcpy(void *dest, const void *src, size_t n) {
const uint32_t *s32 = src;
uint32_t *d32 = dest;
while (n >= 4) {
*d32++ = *s32++;
n -= 4;
}
const char *s8 = (void*)s32;
char *d8 = (void*)d32;
while (n-- != 0)
*d8++ = *s8++;
return dest;
}
void *memset(void *s, int c, size_t n) {
uint8_t *s2 = s;
for (size_t i = 0; i < n; i++)
s2[i] = c;
return s;
}
int strcmp(const char *s1, const char *s2) {
while (*s1 && *s1 == *s2) {
s1++; s2++;
}
if (*s1 == *s2) return 0;
if (*s1 < *s2) return -1;
else return 1;
}
size_t strlen(const char *s) {
size_t c = 0;
while (*s++) c++;
return c;
}
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