mirror of
https://github.com/vale981/arb
synced 2025-03-06 01:41:39 -05:00
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
/*=============================================================================
|
|
|
|
This file is part of ARB.
|
|
|
|
ARB is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ARB is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with ARB; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
=============================================================================*/
|
|
/******************************************************************************
|
|
|
|
Copyright (C) 2013 Fredrik Johansson
|
|
|
|
******************************************************************************/
|
|
|
|
#include "fmpr.h"
|
|
|
|
int main()
|
|
{
|
|
long iter;
|
|
flint_rand_t state;
|
|
|
|
printf("abs_bound_lt_2exp_fmpz....");
|
|
fflush(stdout);
|
|
|
|
flint_randinit(state);
|
|
|
|
for (iter = 0; iter < 10000; iter++)
|
|
{
|
|
fmpr_t x, y;
|
|
fmpz_t b;
|
|
int cmp1, cmp2;
|
|
|
|
fmpr_init(x);
|
|
fmpr_init(y);
|
|
fmpz_init(b);
|
|
|
|
fmpr_randtest_not_zero(x, state, 2 + n_randint(state, 1000), 100);
|
|
fmpr_abs_bound_lt_2exp_fmpz(b, x);
|
|
|
|
fmpr_one(y);
|
|
fmpr_mul_2exp_fmpz(y, y, b);
|
|
|
|
cmp1 = (fmpr_cmpabs(x, y) < 0);
|
|
|
|
fmpr_mul_2exp_si(y, y, -1);
|
|
|
|
cmp2 = (fmpr_cmpabs(y, x) <= 0);
|
|
|
|
fmpr_mul_2exp_si(y, y, 1);
|
|
|
|
if (!cmp1 || !cmp2)
|
|
{
|
|
printf("FAIL\n\n");
|
|
printf("x = "); fmpr_print(x); printf("\n\n");
|
|
printf("y = "); fmpr_print(y); printf("\n\n");
|
|
printf("b = "); fmpz_print(b); printf("\n\n");
|
|
printf("cmp1 = %d, cmp2 = %d\n\n", cmp1, cmp2);
|
|
abort();
|
|
}
|
|
|
|
fmpr_clear(x);
|
|
fmpr_clear(y);
|
|
fmpz_clear(b);
|
|
}
|
|
|
|
flint_randclear(state);
|
|
flint_cleanup();
|
|
printf("PASS\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|