_clib.c

// clib-mimic


#include "_clib.h"



void _strcpy(char *d,const char *s)
{
	for (; *s!=0; ++s, ++d) *d=*s;
	*d=0;
}

void _strcat(char *d,const char *s)
{
	for (; *d!=0; ++d) ;
	for (; *s!=0; ++s, ++d) *d=*s;
	*d=0;
}

void _strncpy(char *d,const char *s,int n)
{
	for (; *s!=0 && n>0; ++s, ++d, --n) *d=*s;
	*d=0;
}


char *_strchr(const char *_s, int c)
{
	char *s=(char *)_s;
	for (; *s!=0; s++) {
		if (*s==(char)c) return s;
	}
	return NULL;
}

unsigned int _strlen(const char *s) 
{
	unsigned int r=0;
	for (; *s!=0; ++s, ++r) ;
	return r;
}


void _memset(void *d, const long s, unsigned long n)
{
	for (; n>0; n--) *(((char *)d)++)=s;
}

int _memcmp(const void *s1, const void *s2, unsigned long n)
{
	for (; n>0; n--) {
		if (*(((unsigned char *)s1))>*(((unsigned char *)s2))) return 1;
		if (*(((unsigned char *)s1)++)<*(((unsigned char *)s2)++)) return -1;
	}
	return 0;
}

void _memcpy(void *d, const void *s, unsigned long n)
{
	for (; n>0; n--) {
		(*(((unsigned char *)d)++)=*(((unsigned char *)s)++));
	}
}