git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| b79f73df JL |
1 | /* Implement POWERSET runtime actions for CHILL. |
| 2 | Copyright (C) 1992,1993 Free Software Foundation, Inc. | |
| 3 | Author: Wilfried Moser, et al | |
| 4 | ||
| 5 | This file is part of GNU CC. | |
| 6 | ||
| 7 | GNU CC is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 2, or (at your option) | |
| 10 | any later version. | |
| 11 | ||
| 12 | GNU CC is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with GNU CC; see the file COPYING. If not, write to | |
| 201853b4 JL |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ | |
| b79f73df | 21 | |
| 502b941f JL |
22 | /* As a special exception, if you link this library with other files, |
| 23 | some of which are compiled with GCC, to produce an executable, | |
| 24 | this library does not by itself cause the resulting executable | |
| 25 | to be covered by the GNU General Public License. | |
| 26 | This exception does not however invalidate any other reasons why | |
| 27 | the executable file might be covered by the GNU General Public License. */ | |
| 28 | ||
| b79f73df JL |
29 | #define __CHILL_LIB__ |
| 30 | ||
| b79f73df JL |
31 | #include <stdio.h> |
| 32 | #include "powerset.h" | |
| 33 | ||
| 34 | extern void __cause_ex1 (char *exname, char *file, int lineno); | |
| 35 | ||
| 36 | /* | |
| 37 | * function __setbitpowerset | |
| 38 | * | |
| 39 | * parameters: | |
| 40 | * set destination set | |
| 41 | * bitlength length of powerset in bits | |
| 42 | * minval lowest valid set value | |
| 43 | * bitno bit number within set | |
| 44 | * new_value zero or one - (new bit value) | |
| 45 | * | |
| 46 | * returns: | |
| 47 | * int 1 .. found | |
| 48 | * 0 .. not found | |
| 49 | * | |
| 50 | * exceptions: | |
| 51 | * rangefail | |
| 52 | * | |
| 53 | * abstract: | |
| 54 | * checks if a given value is included in a powerset | |
| 55 | * | |
| 56 | */ | |
| 57 | void | |
| 58 | __setbitpowerset (powerset, bitlength, minval, bitno, new_value, filename, lineno) | |
| 59 | SET_WORD *powerset; | |
| 60 | unsigned long bitlength; | |
| 61 | long minval; | |
| 62 | long bitno; | |
| 63 | char new_value; /* booleans are represented as 8 bit value */ | |
| 64 | char * filename; | |
| 65 | int lineno; | |
| 66 | { | |
| 67 | if (powerset == NULL | |
| 68 | || bitno < minval | |
| 69 | || (bitno - minval) >= bitlength) | |
| 70 | __cause_ex1 ("rangefail", filename, lineno); | |
| 71 | ||
| 72 | bitno -= minval; | |
| 73 | if (bitlength <= SET_CHAR_SIZE) | |
| 74 | { | |
| 75 | if (new_value & 1) | |
| 76 | SET_BIT_IN_CHAR (*((SET_CHAR *)powerset), bitno); | |
| 77 | else | |
| 78 | CLEAR_BIT_IN_CHAR (*((SET_CHAR *)powerset), bitno); | |
| 79 | } | |
| 80 | else if (bitlength <= SET_SHORT_SIZE) | |
| 81 | { | |
| 82 | if (new_value & 1) | |
| 83 | SET_BIT_IN_SHORT (*((SET_SHORT *)powerset), bitno); | |
| 84 | else | |
| 85 | CLEAR_BIT_IN_SHORT (*((SET_SHORT *)powerset), bitno); | |
| 86 | } | |
| 87 | else | |
| 88 | { | |
| 89 | powerset += (bitno/SET_WORD_SIZE); | |
| 90 | bitno %= SET_WORD_SIZE; | |
| 91 | if (new_value & 1) | |
| 92 | SET_BIT_IN_WORD (*powerset, bitno); | |
| 93 | else | |
| 94 | CLEAR_BIT_IN_WORD (*powerset, bitno); | |
| 95 | } | |
| 96 | } |