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ZZprog.c
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ZZprog.c
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#include "ZZ.h"
#include "bravais.h"
static FILE *outputfile;
void
ZZ_usage (char *progname)
{
printf("Usage: %s 'file1' ['file2'] [-b] [-g] [-h] [-l=<#level>] \n"
,progname);
printf(" [-m] [-n=<#number>] [-p] [-q] [-r] [-s] [-t=out] [-u]\n");
printf("\n");
printf("file1: bravais_TYP containing a finite unimodular group G,\n");
printf(" ending with the order of G.\n");
printf("file2: (OPTIONAL) matrix_TYP containing the Gram matrix of a symmetric \n");
printf(" positive definite G-invariant bilinear form. This form is\n");
printf(" used for reduction purposes only. If this file is not\n");
printf(" given, the program computes such a form. In particular\n");
printf(" the forms possibly given in 'file1' are ignored.\n");
printf("\n");
printf("Calculates the the G-sublattices of the natural lattice Z^n of\n");
printf("finite index, the prime divisors of which divide the order of G\n");
printf("as given in 'file1'. Sublattices of proper multiples of Z^n are\n");
printf("ignored.\n");
printf("\n");
printf("Options:\n");
printf("-b : Print only the matrices of change of base and their inverse.\n");
printf("-g : Do not compute elementary divisors of the gram matrix.\n");
printf("-l=# : Stop after reaching level #level (default #=500).\n");
printf("-n=# : Stop after computation of #number \"sublattices\" (default #=1000).\n");
printf("-q : Quiet mode. Suppress any messages to stderr.\n");
printf("-r : With LLL-reduction for the bases, cf. 'file2'.\n");
printf("-s : Print less information.\n");
printf("-t='out': Create an output file with additional information. The name \n");
printf(" of the output file defaults to stdout. Specifying \"none\" \n");
printf(" disables writing to the output file\n");
printf("-u : Do not compute elementary divisors of the basis\n");
printf(" transformations.\n");
printf("\n");
printf("Options for experts:\n");
printf("-p<N>/<d1>/<d2>...<dN> : treat the lattice as a direct sum of <N> \n");
printf(" sublattices of dimensions <d1>, <d2> etc. \n");
printf(" (1 <= N, di <= 6) and compute only those\n");
printf(" sublattices that have surjective projections \n");
printf(" onto each of the N component lattices.\n");
printf("\n");
printf("Cf. Order, QtoZ, Z_equiv, Q_equiv\n");
}
int parse_options(int argc,
char *argv[],
char *option)
{
int i,
errflag = 0;
*option++ = 't';
outputfile = stdout;
if (is_option('b')){
*option='b';
option++;
}
if (is_option('g')){
*option='g';
option++;
}
if (is_option('q')){
*option='q';
option++;
}
if (is_option('r')){
*option='r';
option++;
}
if (is_option('s')){
*option='s';
option++;
}
if (is_option('m')){
*option='m';
option++;
}
if (is_option('u')){
*option='u';
option++;
}
if (is_option('z')){
*option='z';
option++;
}
if (is_option('Z')){
*option='Z';
option++;
}
if (is_option('l')){
*option='l';
option++;
sprintf(option,"%d ",optionnumber('l'));
option=strchr(option,' ');
}
if (is_option('n')){
*option='n';
option++;
sprintf(option,"%d ",optionnumber('n'));
option=strchr(option,' ');
}
if (is_option('p')){
*option='p';
option++;
for (i=1;i<argc && strstr(argv[i],"-p") != argv[i];i++);
sprintf(option,"%s ",argv[i]+2);
option=strchr(option,' ');
}
if (is_option('t')){
*option='t';
option++;
for (i=1;i<argc && strstr(argv[i],"-t") != argv[i];i++);
outputfile = fopen(argv[i]+3, "w+");
if (outputfile == NULL) {
fprintf(stderr,"ZZprog: Error, could not open temporary file %s\n",
argv[i]+3);
errflag = 1;
}
}
*option=0;
return errflag == 0;
}
int
main (int argc, char *argv[])
{
bravais_TYP *group;
matrix_TYP *gram = NULL,
*ID;
char *prog_name = argv[0];
char options[256];
/* for somewhat obscure carat option handling. Why not use the well
* ANSI standard, i.e. getopt() :-(
*/
read_header(argc, argv);
if (is_option('D') && optionnumber('D') == 8){
INFO_LEVEL = optionnumber('D');
}
if (!parse_options(argc, argv, options)) {
ZZ_usage (prog_name);
exit(31);
}
#ifdef DEBUG
printf("Options: %s\n", options);
{
int i;
for ( i = 0; i < argc; i++) {
printf("argv[%d] = %s\n", i, argv[i]);
}
}
#endif
switch (FILEANZ) {
case 1:
group = get_bravais (FILENAMES[0]);
ID = init_mat(group->dim,group->dim,"i1");
gram = rform(group->gen,group->gen_no,ID,101);
free_mat(ID);
break;
case 2:
group = get_bravais (FILENAMES[0]);
gram = get_mat(FILENAMES[1]);
break;
default:
ZZ_usage (prog_name);
exit(0);
}
#ifdef DEBUG
fput_mat( stderr, gram, "Form", 0);
#endif
ZZ (group, gram, group->divisors, NULL, options, outputfile, 0, 0);
#ifdef DEBUG
fprintf (stderr, "num_zentr: %d\n", group->zentr_no);
#endif
/* the following is not exactly needed as we do an exit() anyways.
* It's useful, however, for debugging.
*/
cleanup_prime();
free_bravais(group);
if (gram != NULL) free_mat(gram);
return 0;
}