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/* tmid.c -- Test mpfi_mid.
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
check_overflow (void)
{
mpfi_t i;
mpfr_t expected;
mpfr_t got;
int inex;
mpfr_init2 (expected, 128);
mpfr_init2 (got, 128);
mpfi_init2 (i, 128);
mpfr_set_inf (&(i->right), +1);
mpfr_nextbelow (&(i->right));
mpfr_set (expected, &(i->right), MPFI_RNDD);
mpfr_nextbelow (expected);
mpfr_set (&(i->left), expected, MPFI_RNDD);
mpfr_nextbelow (&(i->left));
inex = mpfi_mid (got, i);
if (mpfr_cmp (got, expected) != 0 || inex != 0) {
printf ("Error: mpfi_mid(I) does not correct value.\nI =");
mpfi_out_str (stdout, 16, 0, I);
printf (" result: ");
mpfr_out_str (stdout, 16, 0, got, MPFI_RNDU);
if (inex >= 0) {
printf ("return value: %d\n expected: 0\n", inex);
}
else {
printf ("\nexpected: ");
mpfr_out_str (stdout, 16, 0, expected, MPFI_RNDU);
printf ("\n");
}
exit (1);
}
mpfr_clear (expected);
mpfr_clear (got);
mpfi_clear (i);
}
void
check_underflow (void)
{
mpfi_t i;
mpfr_t m;
int inex;
mpfr_init2 (m, 128);
mpfi_init2 (i, 128);
mpfi_set_ui (i, 0);
mpfr_nextabove (&(i->right));
inex = mpfi_mid (m, i);
if (!mpfr_zero_p (m) || inex >= 0) {
printf ("Error: mpfi_mid(I) does not correct value.\nI =");
mpfi_out_str (stdout, 10, 0, I);
printf (" result: ");
mpfr_out_str (stdout, 10, 0, m, MPFI_RNDU);
if (inex >= 0) {
printf ("return value: %d\n expected: -1\n", inex);
}
else {
printf ("\nexpected: 0\n");
}
exit (1);
}
mpfr_clear (m);
mpfi_clear (i);
}
int
main (int argc, char **argv)
{
struct mpfi_function_t i_mid;
mpfi_fun_init_RI (&i_mid, mpfi_mid, NULL);
check_data (&i_mid, "mid.dat");
check_overflow ();
check_underflow ();
mpfi_fun_clear (&i_mid);
return 0;
}
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