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rform.c
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rform.c
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#include "typedef.h"
#include "utils.h"
#include"matrix.h"
#include"bravais.h"
#include"getput.h"
int main (int argc, char *argv[])
{
matrix_TYP **Mat, *V;
bravais_TYP *G;
int epsilon, Mat_anz;
int i;
read_header(argc, argv);
if(FILEANZ != 2 && FILEANZ != 1)
{
printf("Usage: %s 'file1' ['file2'] [-e=epsilon]\n",argv[0]);
printf("\n");
printf("file1: bravais_TYP of the finite unimodular group G.\n");
printf("file2: (OPTIONAL) matrix_TYP of a single matrix A. If file2 is not\n");
printf(" given, A=I_n the identity matrix is assumed.\n");
printf("\n");
printf("The program calculates the sum of g^{tr}Ag with g in G in a seminumerical\n");
printf("way, and divides the results by the greatest common divisor of it's\n");
printf("entries.\n");
printf("Note that this gives a way to construct a positive definite, G-invariant\n");
printf("matrix.\n");
printf("\n");
printf("Options:\n");
printf("-e=epsilon : epsilon is a control parameter, controlling the accuracy\n");
printf(" of the convergence. It is given as an integer epsilon>=100, and\n");
printf(" bigger value stand for a more accurate convergence.\n");
printf("\n");
printf("Cf. Invar_space\n");
if (is_option('h')){
exit(0);
}
else{
exit(31);
}
}
G = get_bravais(FILENAMES[0]);
if(FILEANZ == 2)
Mat = mget_mat (FILENAMES[1], &Mat_anz);
else
{
Mat = (matrix_TYP **)xmalloc(1 *sizeof(matrix_TYP *));
Mat[0] = init_mat(G->dim, G->dim, "1");
Mat_anz = 1;
}
epsilon = optionnumber('e');
if(epsilon == 0)
epsilon = 100;
if(Mat_anz != 1)
printf("#%d\n", Mat_anz);
for(i=0;i<Mat_anz;i++)
{
V = rform(G->gen, G->gen_no, Mat[i], epsilon);
put_mat(V, NULL, "", 2);
free_mat(V);
}
exit(0);
}