mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-16 23:49:39 +08:00
93 lines
2.5 KiB
C
93 lines
2.5 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"
|
|
|
|
extern void __cause_ex1 (char *exname, char *file, int lineno);
|
|
|
|
/*
|
|
* function __setbits
|
|
*
|
|
* parameters:
|
|
* out result
|
|
* bitlength length of bitstring in bits
|
|
* startbit starting bitnumber
|
|
* endbit ending bitnumber
|
|
*
|
|
* returns:
|
|
* void
|
|
*
|
|
* exceptions:
|
|
* rangefail
|
|
*
|
|
* abstract:
|
|
* set all bits from starting bitnumber to ending bitnumber
|
|
* in a powerset
|
|
*
|
|
*/
|
|
void
|
|
__setbits (out, bitlength, startbit, endbit)
|
|
SET_WORD *out;
|
|
unsigned long bitlength;
|
|
long startbit;
|
|
long endbit;
|
|
{
|
|
unsigned long i;
|
|
|
|
if (out == NULL
|
|
|| startbit < 0
|
|
|| startbit >= bitlength
|
|
|| endbit < 0
|
|
|| endbit >= bitlength
|
|
|| endbit < startbit)
|
|
__cause_ex1 ("rangefail", "__setbits", __LINE__);
|
|
|
|
if (bitlength <= SET_CHAR_SIZE)
|
|
for (i = startbit; i <= endbit; i++)
|
|
SET_BIT_IN_CHAR (*((SET_CHAR *)out), i);
|
|
else if (bitlength <= SET_SHORT_SIZE)
|
|
for (i = startbit; i <= endbit; i++)
|
|
SET_BIT_IN_SHORT (*((SET_SHORT *)out), i);
|
|
else
|
|
{
|
|
SET_WORD *p;
|
|
unsigned long bitnr;
|
|
|
|
/* FIXME - this is inefficient! */
|
|
for (i = startbit; i <= endbit; i++)
|
|
{
|
|
p = out + (i / SET_WORD_SIZE);
|
|
bitnr = i % SET_WORD_SIZE;
|
|
SET_BIT_IN_WORD (*p, bitnr);
|
|
}
|
|
}
|
|
}
|