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/* Test file for mpfr_sinh_cosh.
Copyright 2007-2019 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"
static void
failed (mpfr_t x, mpfr_t esh, mpfr_t gsh, mpfr_t ech, mpfr_t gch)
{
printf ("error : mpfr_sinh_cosh (x) x = ");
mpfr_out_str (stdout, 10, 0, x, MPFR_RNDD);
printf ("\nsinh(x) expected ");
mpfr_out_str (stdout, 10, 0, esh, MPFR_RNDD);
printf ("\n got ");
mpfr_out_str (stdout, 10, 0, gsh, MPFR_RNDD);
printf ("\ncosh(x) expected ");
mpfr_out_str (stdout, 10, 0, ech, MPFR_RNDD);
printf ("\n got ");
mpfr_out_str (stdout, 10, 0, gch, MPFR_RNDD);
putchar ('\n');
mpfr_clears (x, esh, gsh, ech, gch, (mpfr_ptr) 0);
exit (1);
}
/* check against sinh, cosh */
static void
check (mpfr_t x, mpfr_rnd_t rnd)
{
mpfr_t s, c, sx, cx;
int isc, is, ic;
mpfr_inits2 (MPFR_PREC(x), s, c, sx, cx, (mpfr_ptr) 0);
isc = mpfr_sinh_cosh (sx, cx, x, rnd);
is = mpfr_sinh (s, x, rnd);
ic = mpfr_cosh (c, x, rnd);
if (!mpfr_equal_p (s, sx) || !mpfr_equal_p (c, cx))
failed (x, s, sx, c, cx);
MPFR_ASSERTN (isc = is || ic);
mpfr_clears (s, c, sx, cx, (mpfr_ptr) 0);
}
static void
check_nans (void)
{
mpfr_t x, sh, ch;
mpfr_init2 (x, 123);
mpfr_init2 (sh, 123);
mpfr_init2 (ch, 123);
/* nan */
mpfr_set_nan (x);
mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
MPFR_ASSERTN (mpfr_nan_p (sh));
MPFR_ASSERTN (mpfr_nan_p (ch));
/* +inf */
mpfr_set_inf (x, 1);
mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
MPFR_ASSERTN (mpfr_inf_p (sh));
MPFR_ASSERTN (mpfr_sgn (sh) > 0);
MPFR_ASSERTN (mpfr_inf_p (ch));
MPFR_ASSERTN (mpfr_sgn (ch) > 0);
/* -inf */
mpfr_set_inf (x, -1);
mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
MPFR_ASSERTN (mpfr_inf_p (sh));
MPFR_ASSERTN (mpfr_sgn (sh) < 0);
MPFR_ASSERTN (mpfr_inf_p (ch));
MPFR_ASSERTN (mpfr_sgn (ch) > 0);
mpfr_clear (x);
mpfr_clear (sh);
mpfr_clear (ch);
}
int
main (int argc, char *argv[])
{
int i;
mpfr_t x;
tests_start_mpfr ();
check_nans ();
/* check against values given by sinh(x), cosh(x) */
mpfr_init2 (x, 53);
mpfr_set_str (x, "FEDCBA987654321p-48", 16, MPFR_RNDN);
for (i = 0; i < 10; ++i)
{
/* x = i - x / 2 : boggle sign and bits */
mpfr_ui_sub (x, i, x, MPFR_RNDD);
mpfr_div_2ui (x, x, 2, MPFR_RNDD);
check (x, MPFR_RNDN);
check (x, MPFR_RNDU);
check (x, MPFR_RNDD);
}
mpfr_clear (x);
tests_end_mpfr ();
return 0;
}
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