versions/v1_4_0/mynewt-core/libc/baselibc/src/memchr.c

/*
 * memchr.c
 */

#include <stddef.h>
#include <string.h>

void *memchr(const void *s, int c, size_t n)
{
	const unsigned char *sp = s;

	while (n--) {
		if (*sp == (unsigned char)c)
			return (void *)sp;
		sp++;
	}

	return NULL;
}