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/* Test file for mpfr_add_ui
Copyright 2000-2021 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 <float.h>
#include "mpfr-test.h"
/* checks that x+y gives the right results with 53 bits of precision */
static void
check3 (const char *xs, unsigned long y, mpfr_rnd_t rnd_mode, const char *zs)
{
mpfr_t xx, zz;
mpfr_inits2 (53, xx, zz, (mpfr_ptr) 0);
mpfr_set_str1 (xx, xs);
mpfr_add_ui (zz, xx, y, rnd_mode);
if (mpfr_cmp_str1(zz, zs) )
{
printf ("expected sum is %s, got ",zs);
mpfr_out_str(stdout, 10, 0, zz, MPFR_RNDN);
printf ("\nmpfr_add_ui failed for x=%s y=%lu with rnd_mode=%s\n",
xs, y, mpfr_print_rnd_mode(rnd_mode));
exit (1);
}
mpfr_clears (xx, zz, (mpfr_ptr) 0);
}
static void
special (void)
{
mpfr_t x, y;
mpfr_init2 (x, 63);
mpfr_init2 (y, 63);
mpfr_set_str_binary (x, "0.110100000000000001110001110010111111000000000101100011100100011");
mpfr_add_ui (y, x, 1, MPFR_RNDD);
mpfr_clear (x);
mpfr_clear (y);
}
static void
check_nans (void)
{
mpfr_t x, y;
mpfr_init2 (x, 123L);
mpfr_init2 (y, 123L);
/* nan + 2394875 == nan */
mpfr_set_nan (x);
mpfr_clear_nanflag ();
mpfr_add_ui (y, x, 2394875L, MPFR_RNDN);
MPFR_ASSERTN (mpfr_nanflag_p ());
MPFR_ASSERTN (mpfr_nan_p (y));
/* +inf + 2394875 == +inf */
mpfr_set_inf (x, 1);
mpfr_add_ui (y, x, 2394875L, MPFR_RNDN);
MPFR_ASSERTN (mpfr_inf_p (y));
MPFR_ASSERTN (mpfr_sgn (y) > 0);
/* -inf + 2394875 == -inf */
mpfr_set_inf (x, -1);
mpfr_add_ui (y, x, 2394875L, MPFR_RNDN);
MPFR_ASSERTN (mpfr_inf_p (y));
MPFR_ASSERTN (mpfr_sgn (y) < 0);
mpfr_clear (x);
mpfr_clear (y);
}
#define TEST_FUNCTION mpfr_add_ui
#define ULONG_ARG2
#define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1, RANDS)
#include "tgeneric.c"
int
main (int argc, char *argv[])
{
tests_start_mpfr ();
check_nans ();
special ();
check3 ("-1.716113812768534e-140", 1271212614, MPFR_RNDZ,
"1.27121261399999976e9");
check3 ("1.22191250737771397120e+20", 948002822, MPFR_RNDN,
"122191250738719408128.0");
check3 ("-6.72658901114033715233e-165", 2000878121, MPFR_RNDZ,
"2.0008781209999997615e9");
check3 ("-2.0769715792901673e-5", 880524, MPFR_RNDN,
"8.8052399997923023e5");
test_generic (MPFR_PREC_MIN, 1000, 100);
tests_end_mpfr ();
return 0;
}
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