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/*
Copyright (C) 2022 Fredrik Johansson
This file is part of FLINT.
FLINT is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version. See <https://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <gmp.h>
#include <flint/flint.h>
#include <flint/fmpz.h>
#include <flint/fmpz_mpoly.h>
#include <flint/fmpz_mpoly_factor.h>
#include <flint/profiler.h>
int
main(int argc, char * argv[])
{
fmpz_mpoly_t f;
fmpz_mpoly_ctx_t mctx;
fmpz_mpoly_factor_t fac;
slong i;
int num_threads = 1;
int timing = 0;
int suppress = 0;
const char * vars[] = { "x", "y", "z" };
if (argc < 2)
{
flint_printf("usage: factor_polynomial [-threads t] [-timing] [-suppress] expr\n");
flint_printf("example: build/examples/factor_polynomial -timing \"(1+x+2*y+3*z)^3+1\"\n");
return 1;
}
fmpz_mpoly_ctx_init(mctx, 3, ORD_LEX);
fmpz_mpoly_init(f, mctx);
fmpz_mpoly_factor_init(fac, mctx);
for (i = 1; i < argc; i++)
{
if (!strcmp(argv[i], "-threads"))
{
num_threads = atoi(argv[i+1]);
flint_set_num_threads(num_threads);
i++;
}
else if (!strcmp(argv[i], "-timing"))
{
timing = 1;
}
else if (!strcmp(argv[i], "-suppress"))
{
suppress = 1;
}
else
{
if (fmpz_mpoly_set_str_pretty(f, argv[i], vars, mctx) != 0)
{
flint_printf("unable to parse polynomial\n");
return 1;
}
}
}
if (timing)
{
TIMEIT_START;
fmpz_mpoly_factor(fac, f, mctx);
TIMEIT_STOP;
print_memory_usage();
}
else
{
fmpz_mpoly_factor(fac, f, mctx);
}
if (!suppress)
{
fmpz_mpoly_print_pretty(f, vars, mctx);
flint_printf(" =\n");
fmpz_mpoly_factor_print_pretty(fac, vars, mctx);
flint_printf("\n");
}
else
{
flint_printf("%wd irreducible factors\n", fac->num);
}
fmpz_mpoly_factor_clear(fac, mctx);
fmpz_mpoly_clear(f, mctx);
fmpz_mpoly_ctx_clear(mctx);
flint_cleanup_master();
return 0;
}
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