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Diffstat (limited to 'libchill/ffsetps.c')
| -rw-r--r-- | libchill/ffsetps.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/libchill/ffsetps.c b/libchill/ffsetps.c deleted file mode 100644 index e506db41a9d..00000000000 --- a/libchill/ffsetps.c +++ /dev/null @@ -1,116 +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" - -extern void __cause_ex1 (char *exname, char *file, int lineno); - -/* - * function __ffsetpowerset - * - * parameters: - * ps powerset - * bitlength length of powerset - * minval set low bound - * filename caller's file name - * lineno caller's line number - * - * returns: - * int enum value of lowest member of powerset - * - * exceptions: - * "empty" if the set is empty - * - * abstract: - * Find first bit set in a powerset and return the corresponding value. - * - */ -long -__ffsetpowerset (ps, bitlength, minval, filename, lineno) - SET_WORD *ps; - unsigned long bitlength; - long minval; - char *filename; - int lineno; -{ - unsigned long bitno; - - if (bitlength <= SET_CHAR_SIZE) - { - SET_CHAR cset = *((SET_CHAR *)ps); - if (cset != 0) - { - /* found a bit set .. calculate which */ - for (bitno = 0; bitno < SET_CHAR_SIZE; bitno++) - if (GET_BIT_IN_CHAR (cset, bitno)) - break; - /* return its index */ - return bitno + minval; - } - } - else if (bitlength <= SET_SHORT_SIZE) - { - SET_SHORT sset = *((SET_SHORT *)ps); - if (sset != 0) - { - /* found a bit set .. calculate which */ - for (bitno = 0; bitno < SET_SHORT_SIZE; bitno++) - if (GET_BIT_IN_SHORT (sset, bitno)) - break; - /* return its index */ - return bitno + minval; - } - } - else /* set composed of array of one or more WORDs */ - { - SET_WORD *p = ps; - SET_WORD *endp = ps + BITS_TO_WORDS(bitlength); - unsigned long cnt; - - /* FIXME: bitorder problems? */ - for (cnt = 0; p < endp; p++, cnt += SET_WORD_SIZE) - { - SET_WORD c = *p; - - if (c) - { - /* found a bit set .. calculate which */ - for (bitno = 0; bitno < SET_WORD_SIZE; bitno++) - if (GET_BIT_IN_WORD (c, bitno)) - break; - /* return its index */ - return cnt + bitno + minval; - } - } - } - /* no bits found - raise exception */ - __cause_ex1 ("empty", filename, lineno); -} |