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lenstool_tab.c
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Fri, Nov 29, 08:25

lenstool_tab.c
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/*This code will tabulate gnfw profile parameters for look-up in lenstool*/
/*Last modified: 10/18/04*/
//Last modified: 08/27/07 (EJ)
#include <stdio.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
/*#include "nr.h"*/
#include "nrutil.h"
#include "lenstool_tab_func.h"
typedef struct{
double alpha_now,x_now,kappa,dpl;
} lensdata;
int main(int argc, char *argv[])
{
//important variables
char infile[20], outfile[200], one_line[200], *dir, *line_ptr;
double x_not,a_step,x_max,alphalow,alphahigh,alphastep;
int alphacount,xcount,countsfile;/*for file i/o*/
double n_xstepsdouble, n_alphastepsdouble;
long int n_xstepsint, n_alphastepsint;
long int stepstot,count;
lensdata lensprop;
FILE *inp;
FILE *outf;
//command line switches*/
printf("Hello - welcome to lenstool_tab\n");
// printf("No of arguments = %d\n",argc);
if(argc != 2)
{
printf("The current form of the program is: \n");
printf(" lenstool_tab [name of input parameter file]\n");
exit(-1);
}
else
{
strcpy(infile, argv[1]);
inp = fopen(infile, "r");
// make sure we write to the right directory!
dir = getenv("LENSTOOL_DIR");
if( dir == 0 ){
fprintf(stderr, "ERROR: LENSTOOL_DIR environment variable is not defined\n");
exit(1);
}
strcpy(outfile,dir);
strcat(outfile,"/table_src/lenstool.tab");
printf("The output database will be written to\n %s\n", outfile);
// strcpy(outfile, "lenstool.tab");
outf = fopen(outfile, "wb+");
}
//INPUT FILE READ
while (1)
{
line_ptr = fgets(one_line,sizeof(one_line),inp);
if (line_ptr == NULL) break;
sscanf(one_line,"%lf %lf %lf %lf %lf %lf",
&alphalow, &alphahigh, &alphastep, &x_not, &x_max, &a_step);
}
printf ("Input file %s read in OK:\n",infile);
printf (" %f %f %f %f %f %f\n", alphalow, alphahigh, alphastep, x_not, x_max, a_step);
fclose(inp);
//Compute total number of steps for later array manipulation
n_alphastepsdouble = (alphahigh - alphalow)/alphastep + 1.01;
n_xstepsdouble = log(x_max/x_not)/log(a_step)+1.01;
n_alphastepsint = n_alphastepsdouble;
n_xstepsint = n_xstepsdouble;
stepstot = n_alphastepsint*n_xstepsint;
printf("Steps in alpha: %i\n",n_alphastepsint);
printf("Steps in x: %i\n", n_xstepsint);
printf("Total steps: %i \n", stepstot);
//First step is to write parameters used to make this table into the first line of the binary file
//in this order: alpha_low, alpha_nsteps, alpha_stepsize*/
lensprop.alpha_now = alphalow;
lensprop.x_now = n_alphastepsint;
lensprop.kappa = alphastep;
lensprop.dpl = 0.0;
fwrite(&lensprop,sizeof(lensdata),1,outf);
//in this order: xlow, x_nsteps, x_stepsize
lensprop.alpha_now = x_not;
lensprop.x_now = n_xstepsint;
lensprop.kappa = a_step;
lensprop.dpl = 0.0;
fwrite(&lensprop,sizeof(lensdata),1,outf);
//First step: inner slope loop
count = 0;
lensprop.alpha_now = alphalow;
for( alphacount = 0; alphacount < n_alphastepsint; alphacount++ )
{
/*now for the loop in x*/
lensprop.x_now = x_not;
for( xcount = 0; xcount < n_xstepsint; xcount++ )
{
lensprop.kappa = nfwg_kappa(lensprop.x_now,1.0,1.0,lensprop.alpha_now);
//note that I set r_sc = 1.0, kappas = 1.0*/
lensprop.dpl = lensprop.x_now*nfwg_dpl(lensprop.x_now,1.0,1.0,lensprop.alpha_now);
//note that I set r_sc = 1.0, kappas = 1.0*/
/*note also the x_now out in front...this is to get rid 'r' dependenc in nfwg_dpl*/
/*so entire scaling is 1.0...this must be corrected for in JP's code*/
/*lensprop.gamma = */
/*not putting in lensprop.gamma for now*/
/*now write lensprop structure to binary file*/
fwrite(&lensprop,sizeof(lensdata),1,outf);
printf("Progress : alpha %lf/%lf x %lf/%lf\r",
lensprop.alpha_now,alphahigh,lensprop.x_now,x_max);
fflush(stdout);
lensprop.x_now *= a_step;
count++;
}
lensprop.alpha_now += alphastep;
}
printf("\n");
printf("Total steps = %i\n", count);
printf("Alpha count = %i\n", alphacount);
printf("xcount = %i\n", xcount);
printf("Table written in lenstool.tab\n");
//now store elements into array*/
fclose(outf);
// countsfile = read_bin(count);
return 0;
}

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