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/* tmag.c -- Test mpfi_mag.
Copyright 2010,
Spaces project, Inria Lorraine
and Salsa project, INRIA Rocquencourt,
and Arenaire project, Inria Rhone-Alpes, France
and Lab. ANO, USTL (Univ. of Lille), France
This file is part of the MPFI Library.
The MPFI Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version.
The MPFI Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the MPFI Library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "mpfi-tests.h"
void
test_random (mp_prec_t prec_min, mp_prec_t prec_max)
{
mpfr_t x;
mpfi_t i;
mp_prec_t prec;
int dl, dr, d0;
int ret;
mpfr_init2 (x, prec_max);
mpfi_init2 (i, prec_max);
for (prec = prec_min; prec < prec_max; prec++) {
mpfi_set_prec (i, prec);
mpfr_set_prec (x, prec);
random_interval (i);
ret = mpfi_mag (x, i);
dl = mpfr_cmp_abs (x, &(i->left));
dr = mpfr_cmp_abs (x, &(i->right));
if (dl < 0 || dr < 0) {
printf ("Error: mpfi_mag(x, I) returns a value x less than some "
"elements in I.\nI = ");
mpfi_out_str (stdout, 10, 0, i);
printf ("\nx = ");
mpfr_out_str (stdout, 10, 0, x, MPFI_RNDD);
printf ("\n");
exit (1);
}
d0 = mpfr_cmp_ui (x, 0);
if (d0 < 0) {
printf ("Error: mpfi_mag(x, I) returns a negative value.\nI = ");
mpfi_out_str (stdout, 10, 0, i);
printf ("\nx = ");
mpfr_out_str (stdout, 10, 0, x, MPFI_RNDD);
printf ("\n");
exit (1);
}
if (dl != 0 && dr != 0 && d0 != 0) {
printf ("Error: mpfi_mag(x, I) returns a value x that is not an "
"endpoint of abs(I).\nI = ");
mpfi_out_str (stdout, 10, 0, i);
printf ("\nx = ");
mpfr_out_str (stdout, 10, 0, x, MPFI_RNDD);
printf ("\n");
exit (1);
}
if (ret != 0) {
printf ("Error: mpfi_mag(x, I) returns a nonexact value x while the "
"precisions of x and I are equal.\nprecision(I) = %lu, I = ",
mpfi_get_prec (i));
mpfi_out_str (stdout, 10, 0, i);
printf ("\nprecision(x) = %lu, x = ", mpfr_get_prec (x));
mpfr_out_str (stdout, 10, 0, x, MPFI_RNDD);
printf ("\n");
exit (1);
}
}
mpfr_clear (x);
mpfi_clear (i);
}
int
main (int argc, char **argv)
{
struct mpfi_function_t i_mag;
mpfi_fun_init_RI (&i_mag, mpfi_mag, NULL);
test_start ();
check_data (&i_mag, "mag.dat");
test_random (2, 1023);
test_end ();
mpfi_fun_clear (&i_mag);
return 0;
}
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