diff options
Diffstat (limited to 'libchill/ffsetclrps.c')
-rw-r--r-- | libchill/ffsetclrps.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/libchill/ffsetclrps.c b/libchill/ffsetclrps.c deleted file mode 100644 index a5c202c7b93..00000000000 --- a/libchill/ffsetclrps.c +++ /dev/null @@ -1,92 +0,0 @@ -/* 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 __ffsetclrpowerset - * - * parameters: - * ps powerset - * bitlength length of powerset - * - * returns: - * int -1 .. nothing found - * >=0 .. index of first true bit found - * exceptions: - * none - */ - -int -__ffsetclrpowerset (ps, bitlength, first_bit) - SET_WORD *ps; - unsigned long bitlength; - int first_bit; -{ - register int bitno; - - if (first_bit >= bitlength) - return -1; - - { - unsigned int words_to_skip = (unsigned) first_bit / SET_WORD_SIZE; - unsigned long cnt = words_to_skip * SET_WORD_SIZE; - SET_WORD *p = ps + words_to_skip; - SET_WORD *endp = ps + BITS_TO_WORDS(bitlength); - SET_WORD c; - first_bit = (unsigned) first_bit % (unsigned) SET_WORD_SIZE; - - c = *p++; - if (c) - { - for (bitno = first_bit; bitno < SET_WORD_SIZE; bitno++) - if (GET_BIT_IN_WORD(c, bitno)) - goto found; - } - cnt += SET_WORD_SIZE; - - while (p < endp) - { - if ((c = *p++)) - { - /* found a bit set .. calculate which */ - for (bitno = 0; bitno < SET_WORD_SIZE; bitno++) - if (GET_BIT_IN_WORD(c, bitno)) - goto found; - } - cnt += SET_WORD_SIZE; - } - return -1; - found: - bitno += cnt; - return bitno >= bitlength ? -1 : bitno; - } -} |