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/* Test file for mpfr_get_exp and mpfr_set_exp.
Copyright 2004, 2006-2025 Free Software Foundation, Inc.
Contributed by the Pascaline 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/>. */
#include "mpfr-test.h"
int
main (int argc, char *argv[])
{
mpfr_t x;
int ret;
mpfr_exp_t emin, emax, e;
int i = 0;
tests_start_mpfr ();
emin = mpfr_get_emin ();
emax = mpfr_get_emax ();
mpfr_init2 (x, 53);
mpfr_set_ui (x, 1, MPFR_RNDN);
ret = mpfr_set_exp (x, 2);
MPFR_ASSERTN (ret == 0 && mpfr_cmp_ui (x, 2) == 0);
e = mpfr_get_exp (x);
MPFR_ASSERTN (e == 2);
e = (mpfr_get_exp) (x);
MPFR_ASSERTN (e == 2);
ret = mpfr_set_exp (x, emax);
e = mpfr_get_exp (x);
MPFR_ASSERTN (e == emax);
e = (mpfr_get_exp) (x);
MPFR_ASSERTN (e == emax);
ret = mpfr_set_exp (x, emin);
e = mpfr_get_exp (x);
MPFR_ASSERTN (e == emin);
e = (mpfr_get_exp) (x);
MPFR_ASSERTN (e == emin);
set_emin (-1);
e = mpfr_get_exp (x);
MPFR_ASSERTN (e == emin);
e = (mpfr_get_exp) (x);
MPFR_ASSERTN (e == emin);
#ifdef IGNORE_CPP_COMPAT
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wc++-compat"
#endif
e = mpfr_get_exp ((i++, VOIDP_CAST(x)));
#ifdef IGNORE_CPP_COMPAT
#pragma GCC diagnostic pop
#endif
MPFR_ASSERTN (e == emin);
MPFR_ASSERTN (i == 1);
ret = mpfr_set_exp (x, -1);
MPFR_ASSERTN (ret == 0 && mpfr_cmp_ui_2exp (x, 1, -2) == 0);
set_emax (1);
ret = mpfr_set_exp (x, 1);
MPFR_ASSERTN (ret == 0 && mpfr_cmp_ui (x, 1) == 0);
ret = mpfr_set_exp (x, -2);
MPFR_ASSERTN (ret != 0 && mpfr_cmp_ui (x, 1) == 0);
ret = mpfr_set_exp (x, 2);
MPFR_ASSERTN (ret != 0 && mpfr_cmp_ui (x, 1) == 0);
mpfr_clear (x);
set_emin (emin);
set_emax (emax);
tests_end_mpfr ();
return 0;
}
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