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#ifndef __STRING_H__
#define __STRING_H__
#include <stdint.h>
#include <stddef.h>
static inline void * memcpy(void * _s1, const void * _s2, size_t n) {
uint8_t * s1 = (uint8_t *) _s1;
const uint8_t * s2 = (uint8_t *) _s2;
size_t i;
for (i = 0; i < n; i++)
*s1++ = *s2++;
return _s1;
}
static inline int memcmp(const void * _s1, const void * _s2, size_t n) {
uint8_t * s1 = (uint8_t *) _s1;
const uint8_t * s2 = (uint8_t *) _s2;
size_t i;
for (i = 0; i < n; i++, s1++, s2++) {
if (*s1 < *s2) {
return -1;
} else if (*s1 > *s2) {
return 1;
}
}
return 0;
}
static inline void * memset(void * _s, int c, size_t n) {
uint8_t * s = (uint8_t *) _s;
size_t i;
for (i = 0; i < n; i++)
*s++ = (uint8_t) c;
return _s;
}
static inline char * strcat(char * s1, const char * s2) {
char * r = s1;
while (*s1)
s1++;
while (*s2)
*s1++ = *s2++;
*s1 = 0;
return r;
}
static inline char * strcpy(char * s1, const char * s2) {
char * r = s1;
while ((*s1++ = *s2++));
return r;
}
static inline char * strncpy(char * s1, const char * s2, size_t n) {
char * r = s1;
size_t i;
for (i = 0; i < n; i++) {
if (*s2) {
*s1++ = *s2++;
} else {
*s1++ = 0;
}
}
return r;
}
static inline const char * strchr(const char * s, char c) {
while (*s) {
if (*s == c)
return s;
s++;
}
return NULL;
}
static inline size_t strlen(const char * s) {
size_t r = 0;
while (*s++)
r++;
return r;
}
#endif
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