[13] | 1 | /**CFile*********************************************************************** |
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| 2 | |
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| 3 | FileName [testcudd.c] |
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| 4 | |
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| 5 | PackageName [cudd] |
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| 6 | |
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| 7 | Synopsis [Sanity check tests for some CUDD functions.] |
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| 8 | |
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| 9 | Description [testcudd reads a matrix with real coefficients and |
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| 10 | transforms it into an ADD. It then performs various operations on |
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| 11 | the ADD and on the BDD corresponding to the ADD pattern. Finally, |
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| 12 | testcudd tests functions relate to Walsh matrices and matrix |
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| 13 | multiplication.] |
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| 14 | |
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| 15 | SeeAlso [] |
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| 16 | |
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| 17 | Author [Fabio Somenzi] |
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| 18 | |
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| 19 | Copyright [Copyright (c) 1995-2004, Regents of the University of Colorado |
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| 20 | |
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| 21 | All rights reserved. |
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| 22 | |
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| 23 | Redistribution and use in source and binary forms, with or without |
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| 24 | modification, are permitted provided that the following conditions |
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| 25 | are met: |
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| 26 | |
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| 27 | Redistributions of source code must retain the above copyright |
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| 28 | notice, this list of conditions and the following disclaimer. |
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| 29 | |
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| 30 | Redistributions in binary form must reproduce the above copyright |
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| 31 | notice, this list of conditions and the following disclaimer in the |
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| 32 | documentation and/or other materials provided with the distribution. |
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| 33 | |
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| 34 | Neither the name of the University of Colorado nor the names of its |
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| 35 | contributors may be used to endorse or promote products derived from |
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| 36 | this software without specific prior written permission. |
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| 37 | |
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| 38 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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| 39 | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 40 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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| 41 | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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| 42 | COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 43 | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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| 44 | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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| 45 | LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| 46 | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 47 | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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| 48 | ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 49 | POSSIBILITY OF SUCH DAMAGE.] |
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| 50 | |
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| 51 | ******************************************************************************/ |
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| 52 | |
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| 53 | #include "util.h" |
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| 54 | #include "cuddInt.h" |
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| 55 | |
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| 56 | |
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| 57 | /*---------------------------------------------------------------------------*/ |
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| 58 | /* Constant declarations */ |
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| 59 | /*---------------------------------------------------------------------------*/ |
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| 60 | |
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| 61 | #define TESTCUDD_VERSION "TestCudd Version #1.0, Release date 3/17/01" |
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| 62 | |
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| 63 | /*---------------------------------------------------------------------------*/ |
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| 64 | /* Variable declarations */ |
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| 65 | /*---------------------------------------------------------------------------*/ |
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| 66 | |
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| 67 | #ifndef lint |
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| 68 | static char rcsid[] DD_UNUSED = "$Id: testcudd.c,v 1.20 2009/03/08 02:49:02 fabio Exp $"; |
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| 69 | #endif |
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| 70 | |
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| 71 | static const char *onames[] = { "C", "M" }; /* names of functions to be dumped */ |
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| 72 | |
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| 73 | /**AutomaticStart*************************************************************/ |
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| 74 | |
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| 75 | /*---------------------------------------------------------------------------*/ |
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| 76 | /* Static function prototypes */ |
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| 77 | /*---------------------------------------------------------------------------*/ |
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| 78 | |
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| 79 | static void usage (char * prog); |
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| 80 | static FILE *open_file (char *filename, const char *mode); |
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| 81 | static int testIterators (DdManager *dd, DdNode *M, DdNode *C, int pr); |
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| 82 | static int testXor (DdManager *dd, DdNode *f, int pr, int nvars); |
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| 83 | static int testHamming (DdManager *dd, DdNode *f, int pr); |
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| 84 | static int testWalsh (DdManager *dd, int N, int cmu, int approach, int pr); |
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| 85 | |
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| 86 | /**AutomaticEnd***************************************************************/ |
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| 87 | |
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| 88 | |
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| 89 | /**Function******************************************************************** |
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| 90 | |
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| 91 | Synopsis [Main function for testcudd.] |
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| 92 | |
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| 93 | Description [] |
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| 94 | |
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| 95 | SideEffects [None] |
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| 96 | |
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| 97 | SeeAlso [] |
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| 98 | |
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| 99 | ******************************************************************************/ |
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| 100 | int |
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| 101 | main(int argc, char **argv) |
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| 102 | { |
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| 103 | FILE *fp; /* pointer to input file */ |
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| 104 | char *file = (char *) ""; /* input file name */ |
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| 105 | FILE *dfp = NULL; /* pointer to dump file */ |
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| 106 | char *dfile; /* file for DD dump */ |
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| 107 | DdNode *dfunc[2]; /* addresses of the functions to be dumped */ |
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| 108 | DdManager *dd; /* pointer to DD manager */ |
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| 109 | DdNode *one; /* fast access to constant function */ |
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| 110 | DdNode *M; |
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| 111 | DdNode **x; /* pointers to variables */ |
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| 112 | DdNode **y; /* pointers to variables */ |
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| 113 | DdNode **xn; /* complements of row variables */ |
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| 114 | DdNode **yn_; /* complements of column variables */ |
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| 115 | DdNode **xvars; |
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| 116 | DdNode **yvars; |
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| 117 | DdNode *C; /* result of converting from ADD to BDD */ |
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| 118 | DdNode *ess; /* cube of essential variables */ |
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| 119 | DdNode *shortP; /* BDD cube of shortest path */ |
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| 120 | DdNode *largest; /* BDD of largest cube */ |
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| 121 | DdNode *shortA; /* ADD cube of shortest path */ |
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| 122 | DdNode *constN; /* value returned by evaluation of ADD */ |
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| 123 | DdNode *ycube; /* cube of the negated y vars for c-proj */ |
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| 124 | DdNode *CP; /* C-Projection of C */ |
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| 125 | DdNode *CPr; /* C-Selection of C */ |
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| 126 | int length; /* length of the shortest path */ |
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| 127 | int nx; /* number of variables */ |
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| 128 | int ny; |
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| 129 | int maxnx; |
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| 130 | int maxny; |
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| 131 | int m; |
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| 132 | int n; |
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| 133 | int N; |
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| 134 | int cmu; /* use CMU multiplication */ |
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| 135 | int pr; /* verbose printout level */ |
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| 136 | int harwell; |
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| 137 | int multiple; /* read multiple matrices */ |
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| 138 | int ok; |
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| 139 | int c; /* variable to read in options */ |
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| 140 | int approach; /* reordering approach */ |
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| 141 | int autodyn; /* automatic reordering */ |
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| 142 | int groupcheck; /* option for group sifting */ |
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| 143 | int profile; /* print heap profile if != 0 */ |
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| 144 | int keepperm; /* keep track of permutation */ |
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| 145 | int clearcache; /* clear the cache after each matrix */ |
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| 146 | int blifOrDot; /* dump format: 0 -> dot, 1 -> blif, ... */ |
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| 147 | int retval; /* return value */ |
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| 148 | int i; /* loop index */ |
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| 149 | long startTime; /* initial time */ |
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| 150 | long lapTime; |
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| 151 | int size; |
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| 152 | unsigned int cacheSize, maxMemory; |
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| 153 | unsigned int nvars,nslots; |
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| 154 | |
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| 155 | startTime = util_cpu_time(); |
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| 156 | |
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| 157 | approach = CUDD_REORDER_NONE; |
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| 158 | autodyn = 0; |
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| 159 | pr = 0; |
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| 160 | harwell = 0; |
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| 161 | multiple = 0; |
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| 162 | profile = 0; |
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| 163 | keepperm = 0; |
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| 164 | cmu = 0; |
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| 165 | N = 4; |
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| 166 | nvars = 4; |
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| 167 | cacheSize = 127; |
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| 168 | maxMemory = 0; |
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| 169 | nslots = CUDD_UNIQUE_SLOTS; |
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| 170 | clearcache = 0; |
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| 171 | groupcheck = CUDD_GROUP_CHECK7; |
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| 172 | dfile = NULL; |
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| 173 | blifOrDot = 0; /* dot format */ |
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| 174 | |
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| 175 | /* Parse command line. */ |
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| 176 | while ((c = util_getopt(argc, argv, (char *) "CDHMPS:a:bcd:g:hkmn:p:v:x:X:")) |
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| 177 | != EOF) { |
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| 178 | switch(c) { |
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| 179 | case 'C': |
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| 180 | cmu = 1; |
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| 181 | break; |
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| 182 | case 'D': |
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| 183 | autodyn = 1; |
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| 184 | break; |
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| 185 | case 'H': |
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| 186 | harwell = 1; |
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| 187 | break; |
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| 188 | case 'M': |
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| 189 | #ifdef MNEMOSYNE |
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| 190 | (void) mnem_setrecording(0); |
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| 191 | #endif |
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| 192 | break; |
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| 193 | case 'P': |
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| 194 | profile = 1; |
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| 195 | break; |
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| 196 | case 'S': |
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| 197 | nslots = atoi(util_optarg); |
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| 198 | break; |
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| 199 | case 'X': |
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| 200 | maxMemory = atoi(util_optarg); |
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| 201 | break; |
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| 202 | case 'a': |
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| 203 | approach = atoi(util_optarg); |
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| 204 | break; |
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| 205 | case 'b': |
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| 206 | blifOrDot = 1; /* blif format */ |
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| 207 | break; |
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| 208 | case 'c': |
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| 209 | clearcache = 1; |
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| 210 | break; |
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| 211 | case 'd': |
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| 212 | dfile = util_optarg; |
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| 213 | break; |
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| 214 | case 'g': |
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| 215 | groupcheck = atoi(util_optarg); |
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| 216 | break; |
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| 217 | case 'k': |
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| 218 | keepperm = 1; |
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| 219 | break; |
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| 220 | case 'm': |
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| 221 | multiple = 1; |
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| 222 | break; |
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| 223 | case 'n': |
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| 224 | N = atoi(util_optarg); |
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| 225 | break; |
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| 226 | case 'p': |
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| 227 | pr = atoi(util_optarg); |
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| 228 | break; |
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| 229 | case 'v': |
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| 230 | nvars = atoi(util_optarg); |
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| 231 | break; |
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| 232 | case 'x': |
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| 233 | cacheSize = atoi(util_optarg); |
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| 234 | break; |
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| 235 | case 'h': |
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| 236 | default: |
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| 237 | usage(argv[0]); |
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| 238 | break; |
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| 239 | } |
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| 240 | } |
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| 241 | |
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| 242 | if (argc - util_optind == 0) { |
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| 243 | file = (char *) "-"; |
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| 244 | } else if (argc - util_optind == 1) { |
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| 245 | file = argv[util_optind]; |
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| 246 | } else { |
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| 247 | usage(argv[0]); |
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| 248 | } |
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| 249 | if ((approach<0) || (approach>17)) { |
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| 250 | (void) fprintf(stderr,"Invalid approach: %d \n",approach); |
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| 251 | usage(argv[0]); |
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| 252 | } |
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| 253 | |
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| 254 | if (pr >= 0) { |
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| 255 | (void) printf("# %s\n", TESTCUDD_VERSION); |
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| 256 | /* Echo command line and arguments. */ |
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| 257 | (void) printf("#"); |
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| 258 | for (i = 0; i < argc; i++) { |
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| 259 | (void) printf(" %s", argv[i]); |
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| 260 | } |
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| 261 | (void) printf("\n"); |
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| 262 | (void) fflush(stdout); |
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| 263 | } |
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| 264 | |
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| 265 | /* Initialize manager and provide easy reference to terminals. */ |
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| 266 | dd = Cudd_Init(nvars,0,nslots,cacheSize,maxMemory); |
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| 267 | one = DD_ONE(dd); |
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| 268 | dd->groupcheck = (Cudd_AggregationType) groupcheck; |
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| 269 | if (autodyn) Cudd_AutodynEnable(dd,CUDD_REORDER_SAME); |
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| 270 | |
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| 271 | /* Open input file. */ |
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| 272 | fp = open_file(file, "r"); |
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| 273 | |
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| 274 | /* Open dump file if requested */ |
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| 275 | if (dfile != NULL) { |
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| 276 | dfp = open_file(dfile, "w"); |
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| 277 | } |
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| 278 | |
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| 279 | x = y = xn = yn_ = NULL; |
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| 280 | do { |
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| 281 | /* We want to start anew for every matrix. */ |
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| 282 | maxnx = maxny = 0; |
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| 283 | nx = maxnx; ny = maxny; |
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| 284 | if (pr>0) lapTime = util_cpu_time(); |
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| 285 | if (harwell) { |
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| 286 | if (pr >= 0) (void) printf(":name: "); |
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| 287 | ok = Cudd_addHarwell(fp, dd, &M, &x, &y, &xn, &yn_, &nx, &ny, |
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| 288 | &m, &n, 0, 2, 1, 2, pr); |
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| 289 | } else { |
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| 290 | ok = Cudd_addRead(fp, dd, &M, &x, &y, &xn, &yn_, &nx, &ny, |
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| 291 | &m, &n, 0, 2, 1, 2); |
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| 292 | if (pr >= 0) |
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| 293 | (void) printf(":name: %s: %d rows %d columns\n", file, m, n); |
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| 294 | } |
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| 295 | if (!ok) { |
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| 296 | (void) fprintf(stderr, "Error reading matrix\n"); |
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| 297 | exit(1); |
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| 298 | } |
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| 299 | |
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| 300 | if (nx > maxnx) maxnx = nx; |
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| 301 | if (ny > maxny) maxny = ny; |
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| 302 | |
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| 303 | /* Build cube of negated y's. */ |
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| 304 | ycube = DD_ONE(dd); |
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| 305 | Cudd_Ref(ycube); |
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| 306 | for (i = maxny - 1; i >= 0; i--) { |
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| 307 | DdNode *tmpp; |
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| 308 | tmpp = Cudd_bddAnd(dd,Cudd_Not(dd->vars[y[i]->index]),ycube); |
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| 309 | if (tmpp == NULL) exit(2); |
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| 310 | Cudd_Ref(tmpp); |
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| 311 | Cudd_RecursiveDeref(dd,ycube); |
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| 312 | ycube = tmpp; |
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| 313 | } |
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| 314 | /* Initialize vectors of BDD variables used by priority func. */ |
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| 315 | xvars = ALLOC(DdNode *, nx); |
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| 316 | if (xvars == NULL) exit(2); |
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| 317 | for (i = 0; i < nx; i++) { |
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| 318 | xvars[i] = dd->vars[x[i]->index]; |
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| 319 | } |
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| 320 | yvars = ALLOC(DdNode *, ny); |
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| 321 | if (yvars == NULL) exit(2); |
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| 322 | for (i = 0; i < ny; i++) { |
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| 323 | yvars[i] = dd->vars[y[i]->index]; |
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| 324 | } |
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| 325 | |
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| 326 | /* Clean up */ |
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| 327 | for (i=0; i < maxnx; i++) { |
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| 328 | Cudd_RecursiveDeref(dd, x[i]); |
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| 329 | Cudd_RecursiveDeref(dd, xn[i]); |
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| 330 | } |
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| 331 | FREE(x); |
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| 332 | FREE(xn); |
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| 333 | for (i=0; i < maxny; i++) { |
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| 334 | Cudd_RecursiveDeref(dd, y[i]); |
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| 335 | Cudd_RecursiveDeref(dd, yn_[i]); |
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| 336 | } |
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| 337 | FREE(y); |
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| 338 | FREE(yn_); |
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| 339 | |
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| 340 | if (pr>0) {(void) printf(":1: M"); Cudd_PrintDebug(dd,M,nx+ny,pr);} |
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| 341 | |
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| 342 | if (pr>0) (void) printf(":2: time to read the matrix = %s\n", |
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| 343 | util_print_time(util_cpu_time() - lapTime)); |
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| 344 | |
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| 345 | C = Cudd_addBddPattern(dd, M); |
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| 346 | if (C == 0) exit(2); |
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| 347 | Cudd_Ref(C); |
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| 348 | if (pr>0) {(void) printf(":3: C"); Cudd_PrintDebug(dd,C,nx+ny,pr);} |
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| 349 | |
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| 350 | /* Test iterators. */ |
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| 351 | retval = testIterators(dd,M,C,pr); |
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| 352 | if (retval == 0) exit(2); |
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| 353 | |
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| 354 | cuddCacheProfile(dd,stdout); |
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| 355 | |
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| 356 | /* Test XOR */ |
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| 357 | retval = testXor(dd,C,pr,nx+ny); |
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| 358 | if (retval == 0) exit(2); |
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| 359 | |
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| 360 | /* Test Hamming distance functions. */ |
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| 361 | retval = testHamming(dd,C,pr); |
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| 362 | if (retval == 0) exit(2); |
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| 363 | |
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| 364 | /* Test selection functions. */ |
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| 365 | CP = Cudd_CProjection(dd,C,ycube); |
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| 366 | if (CP == NULL) exit(2); |
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| 367 | Cudd_Ref(CP); |
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| 368 | if (pr>0) {(void) printf("ycube"); Cudd_PrintDebug(dd,ycube,nx+ny,pr);} |
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| 369 | if (pr>0) {(void) printf("CP"); Cudd_PrintDebug(dd,CP,nx+ny,pr);} |
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| 370 | |
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| 371 | if (nx == ny) { |
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| 372 | CPr = Cudd_PrioritySelect(dd,C,xvars,yvars,(DdNode **)NULL, |
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| 373 | (DdNode *)NULL,ny,Cudd_Xgty); |
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| 374 | if (CPr == NULL) exit(2); |
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| 375 | Cudd_Ref(CPr); |
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| 376 | if (pr>0) {(void) printf(":4: CPr"); Cudd_PrintDebug(dd,CPr,nx+ny,pr);} |
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| 377 | if (CP != CPr) { |
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| 378 | (void) printf("CP != CPr!\n"); |
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| 379 | } |
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| 380 | Cudd_RecursiveDeref(dd, CPr); |
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| 381 | } |
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| 382 | |
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| 383 | /* Test inequality generator. */ |
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| 384 | { |
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| 385 | int Nmin = ddMin(nx,ny); |
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| 386 | int q; |
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| 387 | DdGen *gen; |
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| 388 | int *cube; |
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| 389 | DdNode *f = Cudd_Inequality(dd,Nmin,2,xvars,yvars); |
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| 390 | if (f == NULL) exit(2); |
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| 391 | Cudd_Ref(f); |
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| 392 | if (pr>0) { |
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| 393 | (void) printf(":4: ineq"); |
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| 394 | Cudd_PrintDebug(dd,f,nx+ny,pr); |
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| 395 | if (pr>1) { |
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| 396 | Cudd_ForeachPrime(dd,Cudd_Not(f),Cudd_Not(f),gen,cube) { |
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| 397 | for (q = 0; q < dd->size; q++) { |
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| 398 | switch (cube[q]) { |
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| 399 | case 0: |
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| 400 | (void) printf("1"); |
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| 401 | break; |
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| 402 | case 1: |
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| 403 | (void) printf("0"); |
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| 404 | break; |
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| 405 | case 2: |
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| 406 | (void) printf("-"); |
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| 407 | break; |
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| 408 | default: |
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| 409 | (void) printf("?"); |
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| 410 | } |
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| 411 | } |
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| 412 | (void) printf(" 1\n"); |
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| 413 | } |
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| 414 | (void) printf("\n"); |
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| 415 | } |
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| 416 | } |
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| 417 | Cudd_IterDerefBdd(dd, f); |
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| 418 | } |
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| 419 | FREE(xvars); FREE(yvars); |
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| 420 | |
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| 421 | Cudd_RecursiveDeref(dd, CP); |
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| 422 | Cudd_RecursiveDeref(dd, ycube); |
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| 423 | |
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| 424 | /* Test functions for essential variables. */ |
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| 425 | ess = Cudd_FindEssential(dd,C); |
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| 426 | if (ess == NULL) exit(2); |
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| 427 | Cudd_Ref(ess); |
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| 428 | if (pr>0) {(void) printf(":4: ess"); Cudd_PrintDebug(dd,ess,nx+ny,pr);} |
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| 429 | Cudd_RecursiveDeref(dd, ess); |
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| 430 | |
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| 431 | /* Test functions for shortest paths. */ |
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| 432 | shortP = Cudd_ShortestPath(dd, M, NULL, NULL, &length); |
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| 433 | if (shortP == NULL) exit(2); |
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| 434 | Cudd_Ref(shortP); |
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| 435 | if (pr>0) { |
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| 436 | (void) printf(":5: shortP"); Cudd_PrintDebug(dd,shortP,nx+ny,pr); |
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| 437 | } |
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| 438 | /* Test functions for largest cubes. */ |
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| 439 | largest = Cudd_LargestCube(dd, Cudd_Not(C), &length); |
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| 440 | if (largest == NULL) exit(2); |
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| 441 | Cudd_Ref(largest); |
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| 442 | if (pr>0) { |
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| 443 | (void) printf(":5b: largest"); |
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| 444 | Cudd_PrintDebug(dd,largest,nx+ny,pr); |
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| 445 | } |
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| 446 | Cudd_RecursiveDeref(dd, largest); |
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| 447 | |
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| 448 | /* Test Cudd_addEvalConst and Cudd_addIteConstant. */ |
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| 449 | shortA = Cudd_BddToAdd(dd,shortP); |
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| 450 | if (shortA == NULL) exit(2); |
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| 451 | Cudd_Ref(shortA); |
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| 452 | Cudd_RecursiveDeref(dd, shortP); |
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| 453 | constN = Cudd_addEvalConst(dd,shortA,M); |
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| 454 | if (constN == DD_NON_CONSTANT) exit(2); |
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| 455 | if (Cudd_addIteConstant(dd,shortA,M,constN) != constN) exit(2); |
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| 456 | if (pr>0) {(void) printf("The value of M along the chosen shortest path is %g\n", cuddV(constN));} |
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| 457 | Cudd_RecursiveDeref(dd, shortA); |
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| 458 | |
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| 459 | shortP = Cudd_ShortestPath(dd, C, NULL, NULL, &length); |
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| 460 | if (shortP == NULL) exit(2); |
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| 461 | Cudd_Ref(shortP); |
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| 462 | if (pr>0) { |
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| 463 | (void) printf(":6: shortP"); Cudd_PrintDebug(dd,shortP,nx+ny,pr); |
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| 464 | } |
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| 465 | |
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| 466 | /* Test Cudd_bddIteConstant and Cudd_bddLeq. */ |
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| 467 | if (!Cudd_bddLeq(dd,shortP,C)) exit(2); |
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| 468 | if (Cudd_bddIteConstant(dd,Cudd_Not(shortP),one,C) != one) exit(2); |
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| 469 | Cudd_RecursiveDeref(dd, shortP); |
---|
| 470 | |
---|
| 471 | if (profile) { |
---|
| 472 | retval = cuddHeapProfile(dd); |
---|
| 473 | } |
---|
| 474 | |
---|
| 475 | size = dd->size; |
---|
| 476 | |
---|
| 477 | if (pr>0) { |
---|
| 478 | (void) printf("Average distance: %g\n", Cudd_AverageDistance(dd)); |
---|
| 479 | } |
---|
| 480 | |
---|
| 481 | /* Reorder if so requested. */ |
---|
| 482 | if (approach != CUDD_REORDER_NONE) { |
---|
| 483 | #ifndef DD_STATS |
---|
| 484 | retval = Cudd_EnableReorderingReporting(dd); |
---|
| 485 | if (retval == 0) { |
---|
| 486 | (void) fprintf(stderr,"Error reported by Cudd_EnableReorderingReporting\n"); |
---|
| 487 | exit(3); |
---|
| 488 | } |
---|
| 489 | #endif |
---|
| 490 | #ifdef DD_DEBUG |
---|
| 491 | retval = Cudd_DebugCheck(dd); |
---|
| 492 | if (retval != 0) { |
---|
| 493 | (void) fprintf(stderr,"Error reported by Cudd_DebugCheck\n"); |
---|
| 494 | exit(3); |
---|
| 495 | } |
---|
| 496 | retval = Cudd_CheckKeys(dd); |
---|
| 497 | if (retval != 0) { |
---|
| 498 | (void) fprintf(stderr,"Error reported by Cudd_CheckKeys\n"); |
---|
| 499 | exit(3); |
---|
| 500 | } |
---|
| 501 | #endif |
---|
| 502 | retval = Cudd_ReduceHeap(dd,(Cudd_ReorderingType)approach,5); |
---|
| 503 | if (retval == 0) { |
---|
| 504 | (void) fprintf(stderr,"Error reported by Cudd_ReduceHeap\n"); |
---|
| 505 | exit(3); |
---|
| 506 | } |
---|
| 507 | #ifndef DD_STATS |
---|
| 508 | retval = Cudd_DisableReorderingReporting(dd); |
---|
| 509 | if (retval == 0) { |
---|
| 510 | (void) fprintf(stderr,"Error reported by Cudd_DisableReorderingReporting\n"); |
---|
| 511 | exit(3); |
---|
| 512 | } |
---|
| 513 | #endif |
---|
| 514 | #ifdef DD_DEBUG |
---|
| 515 | retval = Cudd_DebugCheck(dd); |
---|
| 516 | if (retval != 0) { |
---|
| 517 | (void) fprintf(stderr,"Error reported by Cudd_DebugCheck\n"); |
---|
| 518 | exit(3); |
---|
| 519 | } |
---|
| 520 | retval = Cudd_CheckKeys(dd); |
---|
| 521 | if (retval != 0) { |
---|
| 522 | (void) fprintf(stderr,"Error reported by Cudd_CheckKeys\n"); |
---|
| 523 | exit(3); |
---|
| 524 | } |
---|
| 525 | #endif |
---|
| 526 | if (approach == CUDD_REORDER_SYMM_SIFT || |
---|
| 527 | approach == CUDD_REORDER_SYMM_SIFT_CONV) { |
---|
| 528 | Cudd_SymmProfile(dd,0,dd->size-1); |
---|
| 529 | } |
---|
| 530 | |
---|
| 531 | if (pr>0) { |
---|
| 532 | (void) printf("Average distance: %g\n", Cudd_AverageDistance(dd)); |
---|
| 533 | } |
---|
| 534 | |
---|
| 535 | if (keepperm) { |
---|
| 536 | /* Print variable permutation. */ |
---|
| 537 | (void) printf("Variable Permutation:"); |
---|
| 538 | for (i=0; i<size; i++) { |
---|
| 539 | if (i%20 == 0) (void) printf("\n"); |
---|
| 540 | (void) printf("%d ", dd->invperm[i]); |
---|
| 541 | } |
---|
| 542 | (void) printf("\n"); |
---|
| 543 | (void) printf("Inverse Permutation:"); |
---|
| 544 | for (i=0; i<size; i++) { |
---|
| 545 | if (i%20 == 0) (void) printf("\n"); |
---|
| 546 | (void) printf("%d ", dd->perm[i]); |
---|
| 547 | } |
---|
| 548 | (void) printf("\n"); |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | if (pr>0) {(void) printf("M"); Cudd_PrintDebug(dd,M,nx+ny,pr);} |
---|
| 552 | |
---|
| 553 | if (profile) { |
---|
| 554 | retval = cuddHeapProfile(dd); |
---|
| 555 | } |
---|
| 556 | |
---|
| 557 | } |
---|
| 558 | |
---|
| 559 | /* Dump DDs of C and M if so requested. */ |
---|
| 560 | if (dfile != NULL) { |
---|
| 561 | dfunc[0] = C; |
---|
| 562 | dfunc[1] = M; |
---|
| 563 | if (blifOrDot == 1) { |
---|
| 564 | /* Only dump C because blif cannot handle ADDs */ |
---|
| 565 | retval = Cudd_DumpBlif(dd,1,dfunc,NULL,(char **)onames, |
---|
| 566 | NULL,dfp,0); |
---|
| 567 | } else { |
---|
| 568 | retval = Cudd_DumpDot(dd,2,dfunc,NULL,(char **)onames,dfp); |
---|
| 569 | } |
---|
| 570 | if (retval != 1) { |
---|
| 571 | (void) fprintf(stderr,"abnormal termination\n"); |
---|
| 572 | exit(2); |
---|
| 573 | } |
---|
| 574 | } |
---|
| 575 | |
---|
| 576 | Cudd_RecursiveDeref(dd, C); |
---|
| 577 | Cudd_RecursiveDeref(dd, M); |
---|
| 578 | |
---|
| 579 | if (clearcache) { |
---|
| 580 | if (pr>0) {(void) printf("Clearing the cache... ");} |
---|
| 581 | for (i = dd->cacheSlots - 1; i>=0; i--) { |
---|
| 582 | dd->cache[i].data = NIL(DdNode); |
---|
| 583 | } |
---|
| 584 | if (pr>0) {(void) printf("done\n");} |
---|
| 585 | } |
---|
| 586 | if (pr>0) { |
---|
| 587 | (void) printf("Number of variables = %6d\t",dd->size); |
---|
| 588 | (void) printf("Number of slots = %6u\n",dd->slots); |
---|
| 589 | (void) printf("Number of keys = %6u\t",dd->keys); |
---|
| 590 | (void) printf("Number of min dead = %6u\n",dd->minDead); |
---|
| 591 | } |
---|
| 592 | |
---|
| 593 | } while (multiple && !feof(fp)); |
---|
| 594 | |
---|
| 595 | fclose(fp); |
---|
| 596 | if (dfile != NULL) { |
---|
| 597 | fclose(dfp); |
---|
| 598 | } |
---|
| 599 | |
---|
| 600 | /* Second phase: experiment with Walsh matrices. */ |
---|
| 601 | if (!testWalsh(dd,N,cmu,approach,pr)) { |
---|
| 602 | exit(2); |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | /* Check variable destruction. */ |
---|
| 606 | assert(cuddDestroySubtables(dd,3)); |
---|
| 607 | assert(Cudd_DebugCheck(dd) == 0); |
---|
| 608 | assert(Cudd_CheckKeys(dd) == 0); |
---|
| 609 | |
---|
| 610 | retval = Cudd_CheckZeroRef(dd); |
---|
| 611 | ok = retval != 0; /* ok == 0 means O.K. */ |
---|
| 612 | if (retval != 0) { |
---|
| 613 | (void) fprintf(stderr, |
---|
| 614 | "%d non-zero DD reference counts after dereferencing\n", retval); |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | if (pr >= 0) { |
---|
| 618 | (void) Cudd_PrintInfo(dd,stdout); |
---|
| 619 | } |
---|
| 620 | |
---|
| 621 | Cudd_Quit(dd); |
---|
| 622 | |
---|
| 623 | #ifdef MNEMOSYNE |
---|
| 624 | mnem_writestats(); |
---|
| 625 | #endif |
---|
| 626 | |
---|
| 627 | if (pr>0) (void) printf("total time = %s\n", |
---|
| 628 | util_print_time(util_cpu_time() - startTime)); |
---|
| 629 | |
---|
| 630 | if (pr >= 0) util_print_cpu_stats(stdout); |
---|
| 631 | exit(ok); |
---|
| 632 | /* NOTREACHED */ |
---|
| 633 | |
---|
| 634 | } /* end of main */ |
---|
| 635 | |
---|
| 636 | |
---|
| 637 | /*---------------------------------------------------------------------------*/ |
---|
| 638 | /* Definition of static functions */ |
---|
| 639 | /*---------------------------------------------------------------------------*/ |
---|
| 640 | |
---|
| 641 | |
---|
| 642 | /**Function******************************************************************** |
---|
| 643 | |
---|
| 644 | Synopsis [Prints usage info for testcudd.] |
---|
| 645 | |
---|
| 646 | Description [] |
---|
| 647 | |
---|
| 648 | SideEffects [None] |
---|
| 649 | |
---|
| 650 | SeeAlso [] |
---|
| 651 | |
---|
| 652 | ******************************************************************************/ |
---|
| 653 | static void |
---|
| 654 | usage(char *prog) |
---|
| 655 | { |
---|
| 656 | (void) fprintf(stderr, "usage: %s [options] [file]\n", prog); |
---|
| 657 | (void) fprintf(stderr, " -C\t\tuse CMU multiplication algorithm\n"); |
---|
| 658 | (void) fprintf(stderr, " -D\t\tenable automatic dynamic reordering\n"); |
---|
| 659 | (void) fprintf(stderr, " -H\t\tread matrix in Harwell format\n"); |
---|
| 660 | (void) fprintf(stderr, " -M\t\tturns off memory allocation recording\n"); |
---|
| 661 | (void) fprintf(stderr, " -P\t\tprint BDD heap profile\n"); |
---|
| 662 | (void) fprintf(stderr, " -S n\t\tnumber of slots for each subtable\n"); |
---|
| 663 | (void) fprintf(stderr, " -X n\t\ttarget maximum memory in bytes\n"); |
---|
| 664 | (void) fprintf(stderr, " -a n\t\tchoose reordering approach (0-13)\n"); |
---|
| 665 | (void) fprintf(stderr, " \t\t\t0: same as autoMethod\n"); |
---|
| 666 | (void) fprintf(stderr, " \t\t\t1: no reordering (default)\n"); |
---|
| 667 | (void) fprintf(stderr, " \t\t\t2: random\n"); |
---|
| 668 | (void) fprintf(stderr, " \t\t\t3: pivot\n"); |
---|
| 669 | (void) fprintf(stderr, " \t\t\t4: sifting\n"); |
---|
| 670 | (void) fprintf(stderr, " \t\t\t5: sifting to convergence\n"); |
---|
| 671 | (void) fprintf(stderr, " \t\t\t6: symmetric sifting\n"); |
---|
| 672 | (void) fprintf(stderr, " \t\t\t7: symmetric sifting to convergence\n"); |
---|
| 673 | (void) fprintf(stderr, " \t\t\t8-10: window of size 2-4\n"); |
---|
| 674 | (void) fprintf(stderr, " \t\t\t11-13: window of size 2-4 to conv.\n"); |
---|
| 675 | (void) fprintf(stderr, " \t\t\t14: group sifting\n"); |
---|
| 676 | (void) fprintf(stderr, " \t\t\t15: group sifting to convergence\n"); |
---|
| 677 | (void) fprintf(stderr, " \t\t\t16: simulated annealing\n"); |
---|
| 678 | (void) fprintf(stderr, " \t\t\t17: genetic algorithm\n"); |
---|
| 679 | (void) fprintf(stderr, " -b\t\tuse blif as format for dumps\n"); |
---|
| 680 | (void) fprintf(stderr, " -c\t\tclear the cache after each matrix\n"); |
---|
| 681 | (void) fprintf(stderr, " -d file\tdump DDs to file\n"); |
---|
| 682 | (void) fprintf(stderr, " -g\t\tselect aggregation criterion (0,5,7)\n"); |
---|
| 683 | (void) fprintf(stderr, " -h\t\tprints this message\n"); |
---|
| 684 | (void) fprintf(stderr, " -k\t\tprint the variable permutation\n"); |
---|
| 685 | (void) fprintf(stderr, " -m\t\tread multiple matrices (only with -H)\n"); |
---|
| 686 | (void) fprintf(stderr, " -n n\t\tnumber of variables\n"); |
---|
| 687 | (void) fprintf(stderr, " -p n\t\tcontrol verbosity\n"); |
---|
| 688 | (void) fprintf(stderr, " -v n\t\tinitial variables in the unique table\n"); |
---|
| 689 | (void) fprintf(stderr, " -x n\t\tinitial size of the cache\n"); |
---|
| 690 | exit(2); |
---|
| 691 | } /* end of usage */ |
---|
| 692 | |
---|
| 693 | |
---|
| 694 | /**Function******************************************************************** |
---|
| 695 | |
---|
| 696 | Synopsis [Opens a file.] |
---|
| 697 | |
---|
| 698 | Description [Opens a file, or fails with an error message and exits. |
---|
| 699 | Allows '-' as a synonym for standard input.] |
---|
| 700 | |
---|
| 701 | SideEffects [None] |
---|
| 702 | |
---|
| 703 | SeeAlso [] |
---|
| 704 | |
---|
| 705 | ******************************************************************************/ |
---|
| 706 | static FILE * |
---|
| 707 | open_file(char *filename, const char *mode) |
---|
| 708 | { |
---|
| 709 | FILE *fp; |
---|
| 710 | |
---|
| 711 | if (strcmp(filename, "-") == 0) { |
---|
| 712 | return mode[0] == 'r' ? stdin : stdout; |
---|
| 713 | } else if ((fp = fopen(filename, mode)) == NULL) { |
---|
| 714 | perror(filename); |
---|
| 715 | exit(1); |
---|
| 716 | } |
---|
| 717 | return fp; |
---|
| 718 | |
---|
| 719 | } /* end of open_file */ |
---|
| 720 | |
---|
| 721 | |
---|
| 722 | /**Function******************************************************************** |
---|
| 723 | |
---|
| 724 | Synopsis [Tests Walsh matrix multiplication.] |
---|
| 725 | |
---|
| 726 | Description [Tests Walsh matrix multiplication. Return 1 if successful; |
---|
| 727 | 0 otherwise.] |
---|
| 728 | |
---|
| 729 | SideEffects [May create new variables in the manager.] |
---|
| 730 | |
---|
| 731 | SeeAlso [] |
---|
| 732 | |
---|
| 733 | ******************************************************************************/ |
---|
| 734 | static int |
---|
| 735 | testWalsh( |
---|
| 736 | DdManager *dd /* manager */, |
---|
| 737 | int N /* number of variables */, |
---|
| 738 | int cmu /* use CMU approach to matrix multiplication */, |
---|
| 739 | int approach /* reordering approach */, |
---|
| 740 | int pr /* verbosity level */) |
---|
| 741 | { |
---|
| 742 | DdNode *walsh1, *walsh2, *wtw; |
---|
| 743 | DdNode **x, **v, **z; |
---|
| 744 | int i, retval; |
---|
| 745 | DdNode *one = DD_ONE(dd); |
---|
| 746 | DdNode *zero = DD_ZERO(dd); |
---|
| 747 | |
---|
| 748 | if (N > 3) { |
---|
| 749 | x = ALLOC(DdNode *,N); |
---|
| 750 | v = ALLOC(DdNode *,N); |
---|
| 751 | z = ALLOC(DdNode *,N); |
---|
| 752 | |
---|
| 753 | for (i = N-1; i >= 0; i--) { |
---|
| 754 | Cudd_Ref(x[i]=cuddUniqueInter(dd,3*i,one,zero)); |
---|
| 755 | Cudd_Ref(v[i]=cuddUniqueInter(dd,3*i+1,one,zero)); |
---|
| 756 | Cudd_Ref(z[i]=cuddUniqueInter(dd,3*i+2,one,zero)); |
---|
| 757 | } |
---|
| 758 | Cudd_Ref(walsh1 = Cudd_addWalsh(dd,v,z,N)); |
---|
| 759 | if (pr>0) {(void) printf("walsh1"); Cudd_PrintDebug(dd,walsh1,2*N,pr);} |
---|
| 760 | Cudd_Ref(walsh2 = Cudd_addWalsh(dd,x,v,N)); |
---|
| 761 | if (cmu) { |
---|
| 762 | Cudd_Ref(wtw = Cudd_addTimesPlus(dd,walsh2,walsh1,v,N)); |
---|
| 763 | } else { |
---|
| 764 | Cudd_Ref(wtw = Cudd_addMatrixMultiply(dd,walsh2,walsh1,v,N)); |
---|
| 765 | } |
---|
| 766 | if (pr>0) {(void) printf("wtw"); Cudd_PrintDebug(dd,wtw,2*N,pr);} |
---|
| 767 | |
---|
| 768 | if (approach != CUDD_REORDER_NONE) { |
---|
| 769 | #ifdef DD_DEBUG |
---|
| 770 | retval = Cudd_DebugCheck(dd); |
---|
| 771 | if (retval != 0) { |
---|
| 772 | (void) fprintf(stderr,"Error reported by Cudd_DebugCheck\n"); |
---|
| 773 | return(0); |
---|
| 774 | } |
---|
| 775 | #endif |
---|
| 776 | retval = Cudd_ReduceHeap(dd,(Cudd_ReorderingType)approach,5); |
---|
| 777 | if (retval == 0) { |
---|
| 778 | (void) fprintf(stderr,"Error reported by Cudd_ReduceHeap\n"); |
---|
| 779 | return(0); |
---|
| 780 | } |
---|
| 781 | #ifdef DD_DEBUG |
---|
| 782 | retval = Cudd_DebugCheck(dd); |
---|
| 783 | if (retval != 0) { |
---|
| 784 | (void) fprintf(stderr,"Error reported by Cudd_DebugCheck\n"); |
---|
| 785 | return(0); |
---|
| 786 | } |
---|
| 787 | #endif |
---|
| 788 | if (approach == CUDD_REORDER_SYMM_SIFT || |
---|
| 789 | approach == CUDD_REORDER_SYMM_SIFT_CONV) { |
---|
| 790 | Cudd_SymmProfile(dd,0,dd->size-1); |
---|
| 791 | } |
---|
| 792 | } |
---|
| 793 | /* Clean up. */ |
---|
| 794 | Cudd_RecursiveDeref(dd, wtw); |
---|
| 795 | Cudd_RecursiveDeref(dd, walsh1); |
---|
| 796 | Cudd_RecursiveDeref(dd, walsh2); |
---|
| 797 | for (i=0; i < N; i++) { |
---|
| 798 | Cudd_RecursiveDeref(dd, x[i]); |
---|
| 799 | Cudd_RecursiveDeref(dd, v[i]); |
---|
| 800 | Cudd_RecursiveDeref(dd, z[i]); |
---|
| 801 | } |
---|
| 802 | FREE(x); |
---|
| 803 | FREE(v); |
---|
| 804 | FREE(z); |
---|
| 805 | } |
---|
| 806 | return(1); |
---|
| 807 | |
---|
| 808 | } /* end of testWalsh */ |
---|
| 809 | |
---|
| 810 | /**Function******************************************************************** |
---|
| 811 | |
---|
| 812 | Synopsis [Tests iterators.] |
---|
| 813 | |
---|
| 814 | Description [Tests iterators on cubes and nodes.] |
---|
| 815 | |
---|
| 816 | SideEffects [None] |
---|
| 817 | |
---|
| 818 | SeeAlso [] |
---|
| 819 | |
---|
| 820 | ******************************************************************************/ |
---|
| 821 | static int |
---|
| 822 | testIterators( |
---|
| 823 | DdManager *dd, |
---|
| 824 | DdNode *M, |
---|
| 825 | DdNode *C, |
---|
| 826 | int pr) |
---|
| 827 | { |
---|
| 828 | int *cube; |
---|
| 829 | CUDD_VALUE_TYPE value; |
---|
| 830 | DdGen *gen; |
---|
| 831 | int q; |
---|
| 832 | |
---|
| 833 | /* Test iterator for cubes. */ |
---|
| 834 | if (pr>1) { |
---|
| 835 | (void) printf("Testing iterator on cubes:\n"); |
---|
| 836 | Cudd_ForeachCube(dd,M,gen,cube,value) { |
---|
| 837 | for (q = 0; q < dd->size; q++) { |
---|
| 838 | switch (cube[q]) { |
---|
| 839 | case 0: |
---|
| 840 | (void) printf("0"); |
---|
| 841 | break; |
---|
| 842 | case 1: |
---|
| 843 | (void) printf("1"); |
---|
| 844 | break; |
---|
| 845 | case 2: |
---|
| 846 | (void) printf("-"); |
---|
| 847 | break; |
---|
| 848 | default: |
---|
| 849 | (void) printf("?"); |
---|
| 850 | } |
---|
| 851 | } |
---|
| 852 | (void) printf(" %g\n",value); |
---|
| 853 | } |
---|
| 854 | (void) printf("\n"); |
---|
| 855 | } |
---|
| 856 | |
---|
| 857 | if (pr>1) { |
---|
| 858 | (void) printf("Testing prime expansion of cubes:\n"); |
---|
| 859 | if (!Cudd_bddPrintCover(dd,C,C)) return(0); |
---|
| 860 | } |
---|
| 861 | |
---|
| 862 | if (pr>1) { |
---|
| 863 | (void) printf("Testing iterator on primes (CNF):\n"); |
---|
| 864 | Cudd_ForeachPrime(dd,Cudd_Not(C),Cudd_Not(C),gen,cube) { |
---|
| 865 | for (q = 0; q < dd->size; q++) { |
---|
| 866 | switch (cube[q]) { |
---|
| 867 | case 0: |
---|
| 868 | (void) printf("1"); |
---|
| 869 | break; |
---|
| 870 | case 1: |
---|
| 871 | (void) printf("0"); |
---|
| 872 | break; |
---|
| 873 | case 2: |
---|
| 874 | (void) printf("-"); |
---|
| 875 | break; |
---|
| 876 | default: |
---|
| 877 | (void) printf("?"); |
---|
| 878 | } |
---|
| 879 | } |
---|
| 880 | (void) printf(" 1\n"); |
---|
| 881 | } |
---|
| 882 | (void) printf("\n"); |
---|
| 883 | } |
---|
| 884 | |
---|
| 885 | /* Test iterator on nodes. */ |
---|
| 886 | if (pr>2) { |
---|
| 887 | DdNode *node; |
---|
| 888 | (void) printf("Testing iterator on nodes:\n"); |
---|
| 889 | Cudd_ForeachNode(dd,M,gen,node) { |
---|
| 890 | if (Cudd_IsConstant(node)) { |
---|
| 891 | #if SIZEOF_VOID_P == 8 |
---|
| 892 | (void) printf("ID = 0x%lx\tvalue = %-9g\n", |
---|
| 893 | (ptruint) node / |
---|
| 894 | (ptruint) sizeof(DdNode), |
---|
| 895 | Cudd_V(node)); |
---|
| 896 | #else |
---|
| 897 | (void) printf("ID = 0x%x\tvalue = %-9g\n", |
---|
| 898 | (ptruint) node / |
---|
| 899 | (ptruint) sizeof(DdNode), |
---|
| 900 | Cudd_V(node)); |
---|
| 901 | #endif |
---|
| 902 | } else { |
---|
| 903 | #if SIZEOF_VOID_P == 8 |
---|
| 904 | (void) printf("ID = 0x%lx\tindex = %u\tr = %u\n", |
---|
| 905 | (ptruint) node / |
---|
| 906 | (ptruint) sizeof(DdNode), |
---|
| 907 | node->index, node->ref); |
---|
| 908 | #else |
---|
| 909 | (void) printf("ID = 0x%x\tindex = %u\tr = %u\n", |
---|
| 910 | (ptruint) node / |
---|
| 911 | (ptruint) sizeof(DdNode), |
---|
| 912 | node->index, node->ref); |
---|
| 913 | #endif |
---|
| 914 | } |
---|
| 915 | } |
---|
| 916 | (void) printf("\n"); |
---|
| 917 | } |
---|
| 918 | return(1); |
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| 919 | |
---|
| 920 | } /* end of testIterators */ |
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| 921 | |
---|
| 922 | |
---|
| 923 | /**Function******************************************************************** |
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| 924 | |
---|
| 925 | Synopsis [Tests the functions related to the exclusive OR.] |
---|
| 926 | |
---|
| 927 | Description [Tests the functions related to the exclusive OR. It |
---|
| 928 | builds the boolean difference of the given function in three |
---|
| 929 | different ways and checks that the results is the same. Returns 1 if |
---|
| 930 | successful; 0 otherwise.] |
---|
| 931 | |
---|
| 932 | SideEffects [None] |
---|
| 933 | |
---|
| 934 | SeeAlso [] |
---|
| 935 | |
---|
| 936 | ******************************************************************************/ |
---|
| 937 | static int |
---|
| 938 | testXor(DdManager *dd, DdNode *f, int pr, int nvars) |
---|
| 939 | { |
---|
| 940 | DdNode *f1, *f0, *res1, *res2; |
---|
| 941 | int x; |
---|
| 942 | |
---|
| 943 | /* Extract cofactors w.r.t. mid variable. */ |
---|
| 944 | x = nvars / 2; |
---|
| 945 | f1 = Cudd_Cofactor(dd,f,dd->vars[x]); |
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| 946 | if (f1 == NULL) return(0); |
---|
| 947 | Cudd_Ref(f1); |
---|
| 948 | |
---|
| 949 | f0 = Cudd_Cofactor(dd,f,Cudd_Not(dd->vars[x])); |
---|
| 950 | if (f0 == NULL) { |
---|
| 951 | Cudd_RecursiveDeref(dd,f1); |
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| 952 | return(0); |
---|
| 953 | } |
---|
| 954 | Cudd_Ref(f0); |
---|
| 955 | |
---|
| 956 | /* Compute XOR of cofactors with ITE. */ |
---|
| 957 | res1 = Cudd_bddIte(dd,f1,Cudd_Not(f0),f0); |
---|
| 958 | if (res1 == NULL) return(0); |
---|
| 959 | Cudd_Ref(res1); |
---|
| 960 | |
---|
| 961 | if (pr>0) {(void) printf("xor1"); Cudd_PrintDebug(dd,res1,nvars,pr);} |
---|
| 962 | |
---|
| 963 | /* Compute XOR of cofactors with XOR. */ |
---|
| 964 | res2 = Cudd_bddXor(dd,f1,f0); |
---|
| 965 | if (res2 == NULL) { |
---|
| 966 | Cudd_RecursiveDeref(dd,res1); |
---|
| 967 | return(0); |
---|
| 968 | } |
---|
| 969 | Cudd_Ref(res2); |
---|
| 970 | |
---|
| 971 | if (res1 != res2) { |
---|
| 972 | if (pr>0) {(void) printf("xor2"); Cudd_PrintDebug(dd,res2,nvars,pr);} |
---|
| 973 | Cudd_RecursiveDeref(dd,res1); |
---|
| 974 | Cudd_RecursiveDeref(dd,res2); |
---|
| 975 | return(0); |
---|
| 976 | } |
---|
| 977 | Cudd_RecursiveDeref(dd,res1); |
---|
| 978 | Cudd_RecursiveDeref(dd,f1); |
---|
| 979 | Cudd_RecursiveDeref(dd,f0); |
---|
| 980 | |
---|
| 981 | /* Compute boolean difference directly. */ |
---|
| 982 | res1 = Cudd_bddBooleanDiff(dd,f,x); |
---|
| 983 | if (res1 == NULL) { |
---|
| 984 | Cudd_RecursiveDeref(dd,res2); |
---|
| 985 | return(0); |
---|
| 986 | } |
---|
| 987 | Cudd_Ref(res1); |
---|
| 988 | |
---|
| 989 | if (res1 != res2) { |
---|
| 990 | if (pr>0) {(void) printf("xor3"); Cudd_PrintDebug(dd,res1,nvars,pr);} |
---|
| 991 | Cudd_RecursiveDeref(dd,res1); |
---|
| 992 | Cudd_RecursiveDeref(dd,res2); |
---|
| 993 | return(0); |
---|
| 994 | } |
---|
| 995 | Cudd_RecursiveDeref(dd,res1); |
---|
| 996 | Cudd_RecursiveDeref(dd,res2); |
---|
| 997 | return(1); |
---|
| 998 | |
---|
| 999 | } /* end of testXor */ |
---|
| 1000 | |
---|
| 1001 | |
---|
| 1002 | /**Function******************************************************************** |
---|
| 1003 | |
---|
| 1004 | Synopsis [Tests the Hamming distance functions.] |
---|
| 1005 | |
---|
| 1006 | Description [Tests the Hammming distance functions. Returns |
---|
| 1007 | 1 if successful; 0 otherwise.] |
---|
| 1008 | |
---|
| 1009 | SideEffects [None] |
---|
| 1010 | |
---|
| 1011 | SeeAlso [] |
---|
| 1012 | |
---|
| 1013 | ******************************************************************************/ |
---|
| 1014 | static int |
---|
| 1015 | testHamming( |
---|
| 1016 | DdManager *dd, |
---|
| 1017 | DdNode *f, |
---|
| 1018 | int pr) |
---|
| 1019 | { |
---|
| 1020 | DdNode **vars, *minBdd, *zero, *scan; |
---|
| 1021 | int i; |
---|
| 1022 | int d; |
---|
| 1023 | int *minterm; |
---|
| 1024 | int size = Cudd_ReadSize(dd); |
---|
| 1025 | |
---|
| 1026 | vars = ALLOC(DdNode *, size); |
---|
| 1027 | if (vars == NULL) return(0); |
---|
| 1028 | for (i = 0; i < size; i++) { |
---|
| 1029 | vars[i] = Cudd_bddIthVar(dd,i); |
---|
| 1030 | } |
---|
| 1031 | |
---|
| 1032 | minBdd = Cudd_bddPickOneMinterm(dd,Cudd_Not(f),vars,size); |
---|
| 1033 | Cudd_Ref(minBdd); |
---|
| 1034 | if (pr > 0) { |
---|
| 1035 | (void) printf("Chosen minterm for Hamming distance test: "); |
---|
| 1036 | Cudd_PrintDebug(dd,minBdd,size,pr); |
---|
| 1037 | } |
---|
| 1038 | |
---|
| 1039 | minterm = ALLOC(int,size); |
---|
| 1040 | if (minterm == NULL) { |
---|
| 1041 | FREE(vars); |
---|
| 1042 | Cudd_RecursiveDeref(dd,minBdd); |
---|
| 1043 | return(0); |
---|
| 1044 | } |
---|
| 1045 | scan = minBdd; |
---|
| 1046 | zero = Cudd_Not(DD_ONE(dd)); |
---|
| 1047 | while (!Cudd_IsConstant(scan)) { |
---|
| 1048 | DdNode *R = Cudd_Regular(scan); |
---|
| 1049 | DdNode *T = Cudd_T(R); |
---|
| 1050 | DdNode *E = Cudd_E(R); |
---|
| 1051 | if (R != scan) { |
---|
| 1052 | T = Cudd_Not(T); |
---|
| 1053 | E = Cudd_Not(E); |
---|
| 1054 | } |
---|
| 1055 | if (T == zero) { |
---|
| 1056 | minterm[R->index] = 0; |
---|
| 1057 | scan = E; |
---|
| 1058 | } else { |
---|
| 1059 | minterm[R->index] = 1; |
---|
| 1060 | scan = T; |
---|
| 1061 | } |
---|
| 1062 | } |
---|
| 1063 | Cudd_RecursiveDeref(dd,minBdd); |
---|
| 1064 | |
---|
| 1065 | d = Cudd_MinHammingDist(dd,f,minterm,size); |
---|
| 1066 | |
---|
| 1067 | (void) printf("Minimum Hamming distance = %d\n", d); |
---|
| 1068 | |
---|
| 1069 | FREE(vars); |
---|
| 1070 | FREE(minterm); |
---|
| 1071 | return(1); |
---|
| 1072 | |
---|
| 1073 | } /* end of testHamming */ |
---|