main/glib/strtolower.c


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#include "config.h"
#include <ctype.h>
#include "genlib.h"
#include "stddefs.h"

/* strtolower():
 *	In-place modification of a string to be all lower case.
 */
char *
strtolower(char *string)
{
	char *cp;

	cp = string;
	while(*cp) {
		*cp = tolower(*cp);
		cp++;
	}
	return(string);
}

char *
strtoupper(char *string)
{
	char *cp;

	cp = string;
	while(*cp) {
		*cp = toupper(*cp);
		cp++;
	}
	return(string);
}