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/*

FUNCTION

	<>---case-insensitive character string compare

INDEX

	strcasecmp

ANSI_SYNOPSIS

	#include 

	int strcasecmp(const char *<[a]>, const char *<[b]>);

TRAD_SYNOPSIS

	#include 

	int strcasecmp(<[a]>, <[b]>)

	char *<[a]>;

	char *<[b]>;

DESCRIPTION

	<> compares the string at <[a]> to

	the string at <[b]> in a case-insensitive manner.

RETURNS

	If <<*<[a]>>> sorts lexicographically after <<*<[b]>>> (after

	both are converted to lowercase), <> returns a

	number greater than zero.  If the two strings match,

	<> returns zero.  If <<*<[a]>>> sorts

	lexicographically before <<*<[b]>>>, <> returns a

	number less than zero.

PORTABILITY

<> is in the Berkeley Software Distribution.

<> requires no supporting OS subroutines. It uses

tolower() from elsewhere in this library.

QUICKREF

	strcasecmp

*/

#include 

#include 

int

_DEFUN (strcasecmp, (s1, s2),

	_CONST char *s1 _AND

	_CONST char *s2)

{

  _CONST unsigned char *ucs1 = (_CONST unsigned char *) s1;

  _CONST unsigned char *ucs2 = (_CONST unsigned char *) s2;

  int d = 0;

  for ( ; ; )

    {

      _CONST int c1 = tolower(*ucs1++);

      _CONST int c2 = tolower(*ucs2++);

      if (((d = c1 - c2) != 0) || (c2 == '\0'))

        break;

    }

  return d;

}