mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-30 11:05:09 +08:00
94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
/* Implement POWERSET runtime actions for CHILL.
|
|
Copyright (C) 1992,1993 Free Software Foundation, Inc.
|
|
Author: Wilfried Moser, et al
|
|
|
|
This file is part of GNU CC.
|
|
|
|
GNU CC is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU CC is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU CC; see the file COPYING. If not, write to
|
|
the Free Software Foundation, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* As a special exception, if you link this library with other files,
|
|
some of which are compiled with GCC, to produce an executable,
|
|
this library does not by itself cause the resulting executable
|
|
to be covered by the GNU General Public License.
|
|
This exception does not however invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public License. */
|
|
|
|
#define __CHILL_LIB__
|
|
|
|
#include <stdio.h>
|
|
#include "powerset.h"
|
|
|
|
/*
|
|
* function __ltpowerset
|
|
*
|
|
* parameters:
|
|
* left powerset
|
|
* right powerset
|
|
* bitlength length of powerset
|
|
*
|
|
* returns:
|
|
* int 1 .. left is proper subset of right
|
|
* (excludes case where left == right)
|
|
* 0 .. not
|
|
*
|
|
* abstract:
|
|
* check if one powerset is included in another
|
|
*
|
|
*/
|
|
int
|
|
__ltpowerset (left, right, bitlength)
|
|
SET_WORD *left;
|
|
SET_WORD *right;
|
|
unsigned long bitlength;
|
|
{
|
|
if (bitlength <= SET_CHAR_SIZE)
|
|
{
|
|
if ((*((SET_CHAR *)left) & *((SET_CHAR *)right))
|
|
!= *((SET_CHAR *)left))
|
|
return 0;
|
|
if (*((SET_CHAR *)left) != *((SET_CHAR *)right))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
else if (bitlength <= SET_SHORT_SIZE)
|
|
{
|
|
if ((*((SET_SHORT *)left) & *((SET_SHORT *)right))
|
|
!= *((SET_SHORT *)left))
|
|
return 0;
|
|
if (*((SET_SHORT *)left) != *((SET_SHORT *)right))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
SET_WORD *endp = left + BITS_TO_WORDS(bitlength);
|
|
int all_equal = 1; /* assume all bits are equal */
|
|
|
|
while (left < endp)
|
|
{
|
|
if ((*right & *left) != *left)
|
|
return 0;
|
|
if (*left != *right)
|
|
all_equal = 0;
|
|
left++;
|
|
right++;
|
|
}
|
|
if (left == endp && all_equal) /* exclude TRUE return for == case */
|
|
return 0;
|
|
return 1;
|
|
}
|
|
}
|