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de8ff40405
* allgmem.c: Do not include config.h anymore.
* allmem.c allocate.c andps.c cardps.c cause.c copyps.c: Likewise.
* diffps.c eqps.c exh.c exhstack.c ffsetclrps.c ffsetps.c: Likewise.
* flsetclrps.c flsetps.c inbitstr.c inps.c leps.c ltps.c: Likewise.
* neps.c notps.c orps.c retmem.c rtsdummy.c setbitps.c: Likewise.
* setbits.c sliceps.c terminate.c unhex.c unhex1.c xorps.c: Likewise.
From-SVN: r22285
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/* Implement POWERSET runtime actions for CHILL.
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Copyright (C) 1992,1993 Free Software Foundation, Inc.
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Author: Wilfried Moser, et al
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#define __CHILL_LIB__
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#include <stdio.h>
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#include "powerset.h"
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extern void __cause_ex1 (char *exname, char *file, int lineno);
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/*
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* function __setbitpowerset
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*
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* parameters:
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* set destination set
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* bitlength length of powerset in bits
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* minval lowest valid set value
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* bitno bit number within set
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* new_value zero or one - (new bit value)
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*
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* returns:
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* int 1 .. found
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* 0 .. not found
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*
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* exceptions:
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* rangefail
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*
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* abstract:
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* checks if a given value is included in a powerset
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*
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*/
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void
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__setbitpowerset (powerset, bitlength, minval, bitno, new_value, filename, lineno)
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SET_WORD *powerset;
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unsigned long bitlength;
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long minval;
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long bitno;
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char new_value; /* booleans are represented as 8 bit value */
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char * filename;
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int lineno;
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{
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if (powerset == NULL
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|| bitno < minval
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|| (bitno - minval) >= bitlength)
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__cause_ex1 ("rangefail", filename, lineno);
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bitno -= minval;
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if (bitlength <= SET_CHAR_SIZE)
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{
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if (new_value & 1)
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SET_BIT_IN_CHAR (*((SET_CHAR *)powerset), bitno);
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else
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CLEAR_BIT_IN_CHAR (*((SET_CHAR *)powerset), bitno);
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}
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else if (bitlength <= SET_SHORT_SIZE)
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{
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if (new_value & 1)
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SET_BIT_IN_SHORT (*((SET_SHORT *)powerset), bitno);
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else
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CLEAR_BIT_IN_SHORT (*((SET_SHORT *)powerset), bitno);
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}
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else
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{
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powerset += (bitno/SET_WORD_SIZE);
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bitno %= SET_WORD_SIZE;
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if (new_value & 1)
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SET_BIT_IN_WORD (*powerset, bitno);
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else
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CLEAR_BIT_IN_WORD (*powerset, bitno);
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}
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}
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