/*
   =============================================================================
	strrev.c -- reverse a string
	Version 1 -- 1988-02-03 -- D.N. Lynx Crowe

	char *
	strrev(s1, s2)
	char *s1;
	char *s2;

		Copies string 's2' into 's1'.  's1' must be large enough
		to hold 's2'.  Returns 's1'.
   =============================================================================
*/

#include "ram.h"

int8_t *strrev(int8_t *s1, int8_t *s2)
{
	register int8_t *s3;
	register int32_t i;

	i = 0L;				/* initialize string length */
	s3 = s1;			/* initialize target left end pointer */

	while (*s2) {			/* find right end of source string */

		++s2;
		++i;
	}

	--s2;				/* adjust source right end pointer */

	while (i--)			/* copy string in reverse */
		*s3++ = *s2--;

	*s3 = '\0';			/* terminate the string */
	return(s1);			/* return address of reversed string */
}