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/*
* Setup default values of the parameters.
*/
#include <stdio.h>
#include <strings.h>
#include <csdp/declarations.h>
void initparams(
struct paramstruc *params,
int *pprintlevel)
{
FILE *paramfile;
int ret;
double value;
char parametername[30];
char junk[2];
/*
* First, set default values for all parameters.
*/
params->axtol=1.0e-8;
params->atytol=1.0e-8;
params->objtol=1.0e-8;
params->pinftol=1.0e8;
params->dinftol=1.0e8;
params->maxiter=100;
params->minstepfrac=0.90;
params->maxstepfrac=0.97;
params->minstepp=1.0e-8;
params->minstepd=1.0e-8;
params->usexzgap=1;
params->tweakgap=0;
params->affine=0;
params->perturbobj=1;
params->fastmode=0;
*pprintlevel=1;
/*
* Attempt to open param.csdp. If it doesn't open, then just use
* the default values.
*/
paramfile=fopen("param.csdp","r");
if (paramfile != NULL)
{
while (1==1)
{
/*
* Skip over leading white space if there is any. Ignore the return
* code, since it's OK if there are no leading spaces.
*/
ret=fscanf(paramfile,"%*[ \t\n]");
/*
* handle end of file.
*/
if (ret == EOF)
break;
/*
* Get the parameter name.
*/
ret=fscanf(paramfile,"%29[A-Za-z0-9]",parametername);
if (ret != 1)
{
/*
* We don't have a parameter name. Go on to the next line.
*/
ret=fscanf(paramfile,"%*[^\n]\n");
continue;
};
/*
* Skip over any trailing white space, the = sign, and any
* leading white space after =.
*/
ret=fscanf(paramfile,"%*[ \t]");
ret=fscanf(paramfile,"%1[=]",junk);
if (ret != 1)
{
printf("param.csdp line missing =. Skipping to next line.\n");
ret=fscanf(paramfile,"%*[^\n]\n");
continue;
};
/*
* Skip over any white space after equal sign.
*/
ret=fscanf(paramfile,"%*[ \t]");
/*
* Get the value.
*/
ret=fscanf(paramfile,"%le",&value);
/*
* Skip to the end of line.
*/
ret=fscanf(paramfile,"%*[^\n]\n");
/*
* For debugging, print out the parametername and value.
*/
/*
printf("parameter name: %s\n",parametername);
printf("value: %le\n",value);
*/
/*
* Now, adjust the parameter as needed.
*/
if (strcasecmp(parametername,"axtol")==0)
{
params->axtol=value;
continue;
};
if (strcasecmp(parametername,"atytol")==0)
{
params->atytol=value;
continue;
};
if (strcasecmp(parametername,"objtol")==0)
{
params->objtol=value;
continue;
};
if (strcasecmp(parametername,"pinftol")==0)
{
params->pinftol=value;
continue;
};
if (strcasecmp(parametername,"dinftol")==0)
{
params->dinftol=value;
continue;
};
if (strcasecmp(parametername,"maxiter")==0)
{
params->maxiter=value;
continue;
};
if (strcasecmp(parametername,"minstepfrac")==0)
{
params->minstepfrac=value;
continue;
};
if (strcasecmp(parametername,"maxstepfrac")==0)
{
params->maxstepfrac=value;
continue;
};
if (strcasecmp(parametername,"minstepp")==0)
{
params->minstepp=value;
continue;
};
if (strcasecmp(parametername,"minstepd")==0)
{
params->minstepd=value;
continue;
};
if (strcasecmp(parametername,"usexzgap")==0)
{
params->usexzgap=value;
continue;
};
if (strcasecmp(parametername,"tweakgap")==0)
{
params->tweakgap=value;
continue;
};
if (strcasecmp(parametername,"affine")==0)
{
params->affine=value;
continue;
};
if (strcasecmp(parametername,"printlevel")==0)
{
*pprintlevel=value;
continue;
};
if (strcasecmp(parametername,"perturbobj")==0)
{
params->perturbobj=value;
continue;
};
if (strcasecmp(parametername,"fastmode")==0)
{
params->fastmode=value;
continue;
};
printf("param.csdp: unrecognized parameter, %s\n",
parametername);
};
/*
* Close the parameter file.
*/
fclose(paramfile);
};
/*
* Print out the parameters that will be used.
*/
if (*pprintlevel >= 2)
{
printf("params->axtol is %e \n",params->axtol);
printf("params->atytol is %e \n",params->atytol);
printf("params->objtol is %e \n",params->objtol);
printf("params->pinftol is %e \n",params->pinftol);
printf("params->dinftol is %e \n",params->dinftol);
printf("params->maxiter is %d \n",params->maxiter);
printf("params->minstepfrac is %e \n",params->minstepfrac);
printf("params->maxstepfrac is %e \n",params->maxstepfrac);
printf("params->minstepp is %e \n",params->minstepp);
printf("params->minstepd is %e \n",params->minstepd);
printf("params->usexzgap is %d \n",params->usexzgap);
printf("params->tweakgap is %d \n",params->tweakgap);
printf("params->affine is %d \n",params->affine);
printf("params->printlevel is %d \n",*pprintlevel);
printf("params->perturbobj is %e \n",params->perturbobj);
printf("params->fastmode is %d \n",params->fastmode);
};
}
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