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#include <kernel/string.h>
int memcmp(const void *str1, const void *str2, size_t n) {
unsigned char const *p1 = str1;
unsigned char const *p2 = str2;
int ret = 0;
if (str1 == str2)
return 0;
while (n > 0) {
if (*p1 != *p2) {
ret = (*p1 > *p2)?1:-1;
break;
}
n--;
p1++;
p2++;
}
return ret;
}
void* memcpy(void* __restrict dest, const void* __restrict src, size_t n) {
if (dest == src)
return dest;
unsigned char *pdest = dest;
unsigned char const *psrc = src;
for (size_t i = 0; i < n; i++)
pdest[i] = psrc[i];
return dest;
}
void* memmove(void* __restrict dest, const void* __restrict src, size_t n) {
if (dest == src)
return dest;
unsigned char const *psrc = src;
unsigned char buffer[n];
for (size_t i = 0; i < n; i++)
buffer[i] = psrc[i];
return memcpy(dest, (void*)buffer, n);
}
void* memset(void *str, int c, size_t n) {
unsigned char *p = str;
for (size_t i = 0; i < n; i++)
p[i] = (unsigned char)c;
return str;
}
size_t strlen(const char *str) {
size_t i = 0;
while (str[i] != '\0')
i++;
return i;
}
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