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/*

FUNCTION

        <<strlwr>>---force string to lowercase

INDEX

        strlwr

ANSI_SYNOPSIS

        #include <string.h>

        char *strlwr(char *<[a]>);

TRAD_SYNOPSIS

        #include <string.h>

        char *strlwr(<[a]>)

        char *<[a]>;

DESCRIPTION

        <<strlwr>> converts each character in the string at <[a]> to

        lowercase.

RETURNS

        <<strlwr>> returns its argument, <[a]>.

PORTABILITY

<<strlwr>> is not widely portable.

<<strlwr>> requires no supporting OS subroutines.

QUICKREF

        strlwr

*/

#include <string.h>

#include <ctype.h>

char *

_DEFUN (strlwr, (s),

        char *s)

{

  unsigned char *ucs = (unsigned char *) s;

  for ( ; *ucs != '\0'; ucs++)

    {

      *ucs = tolower(*ucs);

    }

  return s;

}