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/*
Read in a solution in SDPA sparse format.
*/
#include <stdio.h>
#include <stdlib.h>
#include <csdp/declarations.h>
void skip_to_end_of_line(FILE *);
int read_sol(
const char *fname,
int n,
int k,
struct blockmatrix C,
struct blockmatrix *pX,
double **py,
struct blockmatrix *pZ)
{
FILE *fid;
int i;
int indexi;
int indexj;
int blkno;
int matno;
double ent;
int ret;
/*
* Allocate storage.
*/
alloc_mat(C,pX);
alloc_mat(C,pZ);
*py=(double *)malloc(sizeof(double)*(k+1));
if (*py == NULL)
{
printf("Storage allocation failed!\n");
exit(205);
};
/*
* Open the file for reading.
*/
fid=fopen(fname,"r");
if (fid == (FILE *) NULL)
{
printf("Couldn't open solution file for reading. \n");
exit(202);
};
/*
* Read in y.
*/
for (i=1; i<=k; i++)
{
ret=fscanf(fid,"%le",&((*py)[i]));
if (ret != 1)
{
printf("Reading solution failed, while reading y. ret=%d\n",ret);
return(1);
};
};
skip_to_end_of_line(fid);
/*
* Initialize X and Z to 0.
*/
zero_mat(*pX);
zero_mat(*pZ);
/*
* Read in the rest of the data.
*/
do {
ret=fscanf(fid,"%d %d %d %d %le",&matno,&blkno,&indexi,&indexj,&ent);
if ((ret != 5) && (ret != EOF))
{
printf("Bad line in solution file: %d %d %d %d %e\n",
matno,blkno,indexi,indexj,ent);
fclose(fid);
return(1);
};
if (matno == 1)
{
switch (pZ->blocks[blkno].blockcategory)
{
case DIAG:
pZ->blocks[blkno].data.vec[indexi]=ent;
break;
case MATRIX:
pZ->blocks[blkno].data.mat[ijtok(indexi,indexj,pZ->blocks[blkno].blocksize)]=ent;
pZ->blocks[blkno].data.mat[ijtok(indexj,indexi,pZ->blocks[blkno].blocksize)]=ent;
break;
default:
printf("Illegal block type! \n");
exit(206);
};
}
else
{
switch (pX->blocks[blkno].blockcategory)
{
case DIAG:
pX->blocks[blkno].data.vec[indexi]=ent;
break;
case MATRIX:
pX->blocks[blkno].data.mat[ijtok(indexi,indexj,pX->blocks[blkno].blocksize)]=ent;
pX->blocks[blkno].data.mat[ijtok(indexj,indexi,pX->blocks[blkno].blocksize)]=ent;
break;
default:
printf("Illegal block type! \n");
exit(206);
};
};
} while (ret != EOF);
fclose(fid);
return(0);
}
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