nuclear@6: #include <string.h>
nuclear@6: 
nuclear@6: void *memset(void *s, int c, size_t n)
nuclear@6: {
nuclear@6: 	char *ptr = s;
nuclear@6: 	while(n--) {
nuclear@6: 		*ptr++ = c;
nuclear@6: 	}
nuclear@6: 	return s;
nuclear@6: }
nuclear@6: 
nuclear@6: void *memcpy(void *dest, const void *src, size_t n)
nuclear@6: {
nuclear@6: 	char *dptr = dest;
nuclear@6: 	const char *sptr = src;
nuclear@6: 
nuclear@6: 	while(n--) {
nuclear@6: 		*dptr++ = *sptr++;
nuclear@6: 	}
nuclear@6: 	return dest;
nuclear@6: }
nuclear@6: 
nuclear@6: void *memmove(void *dest, const void *src, size_t n)
nuclear@6: {
nuclear@6: 	int i;
nuclear@6: 	char *dptr;
nuclear@6: 	const char *sptr;
nuclear@6: 
nuclear@6: 	if(dest <= src) {
nuclear@6: 		/* forward copy */
nuclear@6: 		dptr = dest;
nuclear@6: 		sptr = src;
nuclear@6: 		for(i=0; i<n; i++) {
nuclear@6: 			*dptr++ = *sptr++;
nuclear@6: 		}
nuclear@6: 	} else {
nuclear@6: 		/* backwards copy */
nuclear@6: 		dptr = (char*)dest + n - 1;
nuclear@6: 		sptr = (char*)src + n - 1;
nuclear@6: 		for(i=0; i<n; i++) {
nuclear@6: 			*dptr-- = *sptr--;
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: 
nuclear@6: 	return dest;
nuclear@6: }
nuclear@6: 
nuclear@6: size_t strlen(const char *s)
nuclear@6: {
nuclear@6: 	size_t len = 0;
nuclear@6: 	while(*s++) len++;
nuclear@6: 	return len;
nuclear@6: }
nuclear@6: 
nuclear@6: char *strchr(const char *s, int c)
nuclear@6: {
nuclear@6: 	while(*s) {
nuclear@6: 		if(*s == c) {
nuclear@6: 			return (char*)s;
nuclear@6: 		}
nuclear@6: 		s++;
nuclear@6: 	}
nuclear@6: 	return 0;
nuclear@6: }
nuclear@6: 
nuclear@6: char *strrchr(const char *s, int c)
nuclear@6: {
nuclear@6: 	const char *ptr = s;
nuclear@6: 
nuclear@6: 	/* find the end */
nuclear@6: 	while(*ptr) ptr++;
nuclear@6: 
nuclear@6: 	/* go back checking for c */
nuclear@6: 	while(--ptr >= s) {
nuclear@6: 		if(*ptr == c) {
nuclear@6: 			return (char*)ptr;
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: 	return 0;
nuclear@6: }
nuclear@6: 
nuclear@6: char *strstr(const char *str, const char *substr)
nuclear@6: {
nuclear@6: 	while(*str) {
nuclear@6: 		const char *s1 = str;
nuclear@6: 		const char *s2 = substr;
nuclear@6: 
nuclear@6: 		while(*s1 && *s1 == *s2) {
nuclear@6: 			s1++;
nuclear@6: 			s2++;
nuclear@6: 		}
nuclear@6: 		if(!*s2) {
nuclear@6: 			return (char*)str;
nuclear@6: 		}
nuclear@6: 		str++;
nuclear@6: 	}
nuclear@6: 	return 0;
nuclear@6: }
nuclear@6: 
nuclear@6: int strcmp(const char *s1, const char *s2)
nuclear@6: {
nuclear@6: 	while(*s1 && *s1 == *s2) {
nuclear@6: 		s1++;
nuclear@6: 		s2++;
nuclear@6: 	}
nuclear@6: 	return *s1 - *s2;
nuclear@6: }