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/*
* Revision Control Information
*
* $Source$
* $Author$
* $Revision$
* $Date$
*
*/
/*
*/
#include "espresso.h"
/*
* verify -- check that all minterms of F are contained in (Fold u Dold)
* and that all minterms of Fold are contained in (F u Dold).
*/
bool verify(F, Fold, Dold)
pcover F, Fold, Dold;
{
pcube p, last, *FD;
bool verify_error = FALSE;
/* Make sure the function didn't grow too large */
FD = cube2list(Fold, Dold);
foreach_set(F, last, p)
if (! cube_is_covered(FD, p)) {
printf("some minterm in F is not covered by Fold u Dold\n");
verify_error = TRUE;
if (verbose_debug) printf("%s\n", pc1(p)); else break;
}
free_cubelist(FD);
/* Make sure minimized function covers the original function */
FD = cube2list(F, Dold);
foreach_set(Fold, last, p)
if (! cube_is_covered(FD, p)) {
printf("some minterm in Fold is not covered by F u Dold\n");
verify_error = TRUE;
if (verbose_debug) printf("%s\n", pc1(p)); else break;
}
free_cubelist(FD);
return verify_error;
}
/*
* PLA_verify -- verify that two PLA's are identical
*
* If names are given, row and column permutations are done to make
* the comparison meaningful.
*
*/
bool PLA_verify(PLA1, PLA2)
pPLA PLA1, PLA2;
{
/* Check if both have names given; if so, attempt to permute to
* match the names
*/
if (PLA1->label != NULL && PLA1->label[0] != NULL &&
PLA2->label != NULL && PLA2->label[0] != NULL) {
PLA_permute(PLA1, PLA2);
} else {
(void) fprintf(stderr, "Warning: cannot permute columns without names\n");
return TRUE;
}
if (PLA1->F->sf_size != PLA2->F->sf_size) {
(void) fprintf(stderr, "PLA_verify: PLA's are not the same size\n");
return TRUE;
}
return verify(PLA2->F, PLA1->F, PLA1->D);
}
/*
* Permute the columns of PLA1 so that they match the order of PLA2
* Discard any columns of PLA1 which are not in PLA2
* Association is strictly by the names of the columns of the cover.
*/
PLA_permute(PLA1, PLA2)
pPLA PLA1, PLA2;
{
register int i, j, *permute, npermute;
register char *labi;
char **label;
/* determine which columns of PLA1 to save, and place these in the list
* "permute"; the order in this list is the final output order
*/
npermute = 0;
permute = ALLOC(int, PLA2->F->sf_size);
for(i = 0; i < PLA2->F->sf_size; i++) {
labi = PLA2->label[i];
for(j = 0; j < PLA1->F->sf_size; j++) {
if (strcmp(labi, PLA1->label[j]) == 0) {
permute[npermute++] = j;
break;
}
}
}
/* permute columns */
if (PLA1->F != NULL) {
PLA1->F = sf_permute(PLA1->F, permute, npermute);
}
if (PLA1->R != NULL) {
PLA1->R = sf_permute(PLA1->R, permute, npermute);
}
if (PLA1->D != NULL) {
PLA1->D = sf_permute(PLA1->D, permute, npermute);
}
/* permute the labels */
label = ALLOC(char *, cube.size);
for(i = 0; i < npermute; i++) {
label[i] = PLA1->label[permute[i]];
}
for(i = npermute; i < cube.size; i++) {
label[i] = NULL;
}
FREE(PLA1->label);
PLA1->label = label;
FREE(permute);
}
/*
* check_consistency -- test that the ON-set, OFF-set and DC-set form
* a partition of the boolean space.
*/
bool check_consistency(PLA)
pPLA PLA;
{
bool verify_error = FALSE;
pcover T;
T = cv_intersect(PLA->F, PLA->D);
if (T->count == 0)
printf("ON-SET and DC-SET are disjoint\n");
else {
printf("Some minterm(s) belong to both the ON-SET and DC-SET !\n");
if (verbose_debug)
cprint(T);
verify_error = TRUE;
}
(void) fflush(stdout);
free_cover(T);
T = cv_intersect(PLA->F, PLA->R);
if (T->count == 0)
printf("ON-SET and OFF-SET are disjoint\n");
else {
printf("Some minterm(s) belong to both the ON-SET and OFF-SET !\n");
if (verbose_debug)
cprint(T);
verify_error = TRUE;
}
(void) fflush(stdout);
free_cover(T);
T = cv_intersect(PLA->D, PLA->R);
if (T->count == 0)
printf("DC-SET and OFF-SET are disjoint\n");
else {
printf("Some minterm(s) belong to both the OFF-SET and DC-SET !\n");
if (verbose_debug)
cprint(T);
verify_error = TRUE;
}
(void) fflush(stdout);
free_cover(T);
if (tautology(cube3list(PLA->F, PLA->D, PLA->R)))
printf("Union of ON-SET, OFF-SET and DC-SET is the universe\n");
else {
T = complement(cube3list(PLA->F, PLA->D, PLA->R));
printf("There are minterms left unspecified !\n");
if (verbose_debug)
cprint(T);
verify_error = TRUE;
free_cover(T);
}
(void) fflush(stdout);
return verify_error;
}
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