#include "string.h"
#include <stdint.h>
-void *memcpy(void *dest, const void *src, int len)
-{
+void *memcpy(void *dest, const void *src, size_t len) {
uint8_t *d = dest;
const uint8_t *s = src;
while((len--) > 0) {
return dest;
}
-void *memset(void *dest, int c, int len)
-{
+
+void *memset(void *dest, int c, size_t len) {
uint8_t *d = dest;
while((len--) > 0) {
*d = c;
return dest;
}
-int memcmp(const void *av, const void *bv, int len)
-{
+
+void *memmove(void *dest, const void *src, size_t len) {
+ uint8_t *d = dest;
+ const uint8_t *s = src;
+ if (dest <= src) {
+ while((len--) > 0) {
+ *d = *s;
+ d++;
+ s++;
+ }
+ } else {
+ d = d + len - 1;
+ s = s + len - 1;
+ while((len--) > 0) {
+ *d = *s;
+ d--;
+ s--;
+ }
+ }
+ return dest;
+}
+
+
+int memcmp(const void *av, const void *bv, size_t len) {
const uint8_t *a = av;
const uint8_t *b = bv;
return 0;
}
-int strlen(const char *str)
-{
+
+size_t strlen(const char *str) {
int l = 0;
while(*str) {
l++;
return l;
}
-char* strncat(char *dest, const char *src, unsigned int n)
-{
+
+char* strncat(char *dest, const char *src, size_t n) {
unsigned int dest_len = strlen(dest);
unsigned int i;
return dest;
}
+
+
+char* strcat(char *dest, const char *src) {
+ unsigned int dest_len = strlen(dest);
+ unsigned int i;
+
+ for (i = 0 ; src[i] != '\0' ; i++)
+ dest[dest_len + i] = src[i];
+ dest[dest_len + i] = '\0';
+
+ return dest;
+}