Added cddlib-094h from http://www.inf.ethz.ch/personal/fukudak/cdd_home/
Change-Id: I64519509269e434b1b9ea87c3fe0805e711c0ac9
diff --git a/third_party/cddlib/src/minkowski.c b/third_party/cddlib/src/minkowski.c
new file mode 100644
index 0000000..22c5905
--- /dev/null
+++ b/third_party/cddlib/src/minkowski.c
@@ -0,0 +1,157 @@
+/* minkowski.c: Main test program to call the cdd library cddlib
+ written by Komei Fukuda, fukuda@ifor.math.ethz.ch
+ Version 0.93, July 15, 2003
+ Standard ftp site: ftp.ifor.math.ethz.ch, Directory: pub/fukuda/cdd
+*/
+
+/* This program 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 of the License, or
+ (at your option) any later version.
+
+ This program 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 this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "setoper.h"
+#include "cdd.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+#include <string.h>
+
+dd_boolean SetInputFile(FILE **f, dd_DataFileType fname)
+{
+ dd_boolean success=dd_FALSE;
+ success=dd_FALSE;
+
+ if ( ( *f = fopen(fname, "r") )!= NULL) {
+ printf("input file %s is open\n", fname);
+ success=dd_TRUE;
+ }
+ else{
+ printf("The input file %s not found\n",fname);
+ }
+ return success;
+}
+
+dd_boolean SetWriteFile(FILE **f, dd_DataFileType fname)
+{
+ dd_boolean success=dd_FALSE;
+
+ if ( (*f = fopen(fname, "w")) != NULL){
+ printf("output file %s is open\n",fname);
+ success=dd_TRUE;
+ }
+ else{
+ printf("The output file %s cannot be opened\n",fname);
+ }
+ return success;
+}
+
+
+int main(int argc, char *argv[])
+{
+ dd_PolyhedraPtr poly;
+ dd_LPPtr lp;
+ dd_MatrixPtr M,A;
+ dd_ErrorType err=dd_NoError;
+ dd_DataFileType inputfile,outputfile;
+ FILE *reading=NULL, *writing;
+
+ dd_set_global_constants(); /* First, this must be called. */
+
+ if (argc>1) strcpy(inputfile,argv[1]);
+ if (argc<=1 || !SetInputFile(&reading,argv[1])){
+ dd_WriteProgramDescription(stdout);
+ dd_SetInputFile(&reading,inputfile, &err);
+ }
+ if (err==dd_NoError) {
+ M=dd_PolyFile2Matrix(reading, &err);
+ }
+ else {
+ printf("Input file not found\n");
+ goto _L99;
+ }
+
+ if (err!=dd_NoError) goto _L99;
+
+ if (M->objective==dd_LPnone){ /* do representation conversion */
+ poly=dd_DDMatrix2Poly2(M, dd_LexMin, &err);
+ /* equivalent to poly=dd_DDMatrix2Poly2(M, &err) when the second argument is set to dd_LexMin. */
+ if (err!=dd_NoError) goto _L99;
+
+ dd_SetWriteFileName(inputfile, outputfile, 'o', poly->representation);
+ SetWriteFile(&writing, outputfile);
+ dd_WriteProgramDescription(writing);
+ dd_WriteRunningMode(writing, poly);
+ switch (poly->representation) {
+ case dd_Inequality:
+ fprintf(writing, "ext_file: Generators\n");
+ A=dd_CopyGenerators(poly);
+ dd_WriteMatrix(writing,A);
+ dd_FreeMatrix(A);
+ break;
+
+ case dd_Generator:
+ fprintf(writing, "ine_file: Inequalities\n");
+ A=dd_CopyInequalities(poly);
+ dd_WriteMatrix(writing,A);
+ dd_FreeMatrix(A);
+ break;
+
+ default:
+ break;
+ }
+ dd_WriteDDTimes(writing,poly);
+ fclose(writing);
+
+ dd_SetWriteFileName(inputfile, outputfile, 'a', poly->representation);
+ SetWriteFile(&writing, outputfile);
+ dd_WriteAdjacency(writing,poly);
+ fclose(writing);
+
+ dd_SetWriteFileName(inputfile, outputfile, 'j', poly->representation);
+ SetWriteFile(&writing, outputfile);
+ dd_WriteInputAdjacency(writing,poly);
+ fclose(writing);
+
+ dd_SetWriteFileName(inputfile, outputfile, 'i', poly->representation);
+ SetWriteFile(&writing, outputfile);
+ dd_WriteIncidence(writing,poly);
+ fclose(writing);
+
+ dd_SetWriteFileName(inputfile, outputfile, 'n', poly->representation);
+ SetWriteFile(&writing, outputfile);
+ dd_WriteInputIncidence(writing,poly);
+ fclose(writing);
+
+ dd_FreeMatrix(M);
+ dd_FreePolyhedra(poly);
+
+ } else { /* solve the LP */
+ lp=dd_Matrix2LP(M, &err); if (err!=dd_NoError) goto _L99;
+ dd_LPSolve(lp,dd_DualSimplex,&err); if (err!=dd_NoError) goto _L99;
+
+ dd_SetWriteFileName(inputfile, outputfile, 's', M->representation);
+ SetWriteFile(&writing, outputfile);
+ dd_WriteLPResult(writing, lp, err);
+ fclose(writing);
+
+ dd_FreeMatrix(M);
+ dd_FreeLPData(lp);
+ }
+_L99:
+ if (err!=dd_NoError) dd_WriteErrorMessages(stdout,err);
+ return 0;
+}
+
+
+/* end of simplecdd.c */