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/* Test file for mpfr_trunc, mpfr_ceil, mpfr_floor.
Copyright 1999-2004, 2006-2021 Free Software Foundation, Inc.
Contributed by the AriC and Caramba projects, INRIA.
This file is part of the GNU MPFR Library.
The GNU MPFR 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 3 of the License, or (at your
option) any later version.
The GNU MPFR 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 GNU MPFR Library; see the file COPYING.LESSER. If not, see
https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#include "mpfr-test.h"
#define SIZEX 100
int
main (void)
{
int j, k;
mpfr_t x, y, z, t, y2, z2, t2;
tests_start_mpfr ();
mpfr_inits2 (SIZEX, x, y, z, t, y2, z2, t2, (mpfr_ptr) 0);
mpfr_set_str1 (x, "0.5");
mpfr_ceil(y, x);
if (mpfr_cmp_ui (y, 1))
{
printf ("Error in mpfr_ceil for x=0.5: expected 1.0, got ");
mpfr_dump (y);
exit (1);
}
mpfr_set_ui (x, 0, MPFR_RNDN);
mpfr_ceil(y, x);
if (mpfr_cmp_ui(y,0))
{
printf ("Error in mpfr_ceil for x=0.0: expected 0.0, got ");
mpfr_dump (y);
exit (1);
}
mpfr_set_ui (x, 1, MPFR_RNDN);
mpfr_ceil(y, x);
if (mpfr_cmp_ui(y,1))
{
printf ("Error in mpfr_ceil for x=1.0: expected 1.0, got ");
mpfr_dump (y);
exit (1);
}
for (j=0;j<1000;j++)
{
mpfr_urandomb (x, RANDS);
MPFR_EXP (x) = 2;
for (k = 2; k <= SIZEX; k++)
{
mpfr_set_prec(y, k);
mpfr_set_prec(y2, k);
mpfr_set_prec(z, k);
mpfr_set_prec(z2, k);
mpfr_set_prec(t, k);
mpfr_set_prec(t2, k);
mpfr_floor(y, x);
mpfr_set(y2, x, MPFR_RNDD);
mpfr_trunc(z, x);
mpfr_set(z2, x, MPFR_RNDZ);
mpfr_ceil(t, x);
mpfr_set(t2, x, MPFR_RNDU);
if (!mpfr_eq(y, y2, k))
{
printf ("Error in floor, x = "); mpfr_dump (x);
printf ("floor(x) = "); mpfr_dump (y);
printf ("round(x, RNDD) = "); mpfr_dump (y2);
exit(1);
}
if (!mpfr_eq(z, z2, k))
{
printf ("Error in trunc, x = "); mpfr_dump (x);
printf ("trunc(x) = "); mpfr_dump (z);
printf ("round(x, RNDZ) = "); mpfr_dump (z2);
exit(1);
}
if (!mpfr_eq(y, y2, k))
{
printf ("Error in ceil, x = "); mpfr_dump (x);
printf ("ceil(x) = "); mpfr_dump (t);
printf ("round(x, RNDU) = "); mpfr_dump (t2);
exit(1);
}
MPFR_EXP(x)++;
}
}
mpfr_clears (x, y, z, t, y2, z2, t2, (mpfr_ptr) 0);
tests_end_mpfr ();
return 0;
}
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