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974e12c1f0
Old version was 3.1.2 and is quite old: 2013-03-13 A lot has happened since then 4.0.1 is from 2018-02-07
128 lines
3.3 KiB
C
128 lines
3.3 KiB
C
/* Test file for mpfr_sinh_cosh.
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Copyright 2007-2018 Free Software Foundation, Inc.
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Contributed by the AriC and Caramba projects, INRIA.
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This file is part of the GNU MPFR Library.
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The GNU MPFR Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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The GNU MPFR Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
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http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
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#include "mpfr-test.h"
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static void
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failed (mpfr_t x, mpfr_t esh, mpfr_t gsh, mpfr_t ech, mpfr_t gch)
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{
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printf ("error : mpfr_sinh_cosh (x) x = ");
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mpfr_out_str (stdout, 10, 0, x, MPFR_RNDD);
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printf ("\nsinh(x) expected ");
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mpfr_out_str (stdout, 10, 0, esh, MPFR_RNDD);
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printf ("\n got ");
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mpfr_out_str (stdout, 10, 0, gsh, MPFR_RNDD);
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printf ("\ncosh(x) expected ");
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mpfr_out_str (stdout, 10, 0, ech, MPFR_RNDD);
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printf ("\n got ");
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mpfr_out_str (stdout, 10, 0, gch, MPFR_RNDD);
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putchar ('\n');
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mpfr_clears (x, esh, gsh, ech, gch, (mpfr_ptr) 0);
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exit (1);
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}
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/* check against sinh, cosh */
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static void
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check (mpfr_t x, mpfr_rnd_t rnd)
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{
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mpfr_t s, c, sx, cx;
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int isc, is, ic;
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mpfr_inits2 (MPFR_PREC(x), s, c, sx, cx, (mpfr_ptr) 0);
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isc = mpfr_sinh_cosh (sx, cx, x, rnd);
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is = mpfr_sinh (s, x, rnd);
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ic = mpfr_cosh (c, x, rnd);
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if (!mpfr_equal_p (s, sx) || !mpfr_equal_p (c, cx))
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failed (x, s, sx, c, cx);
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MPFR_ASSERTN (isc = is || ic);
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mpfr_clears (s, c, sx, cx, (mpfr_ptr) 0);
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}
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static void
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check_nans (void)
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{
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mpfr_t x, sh, ch;
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mpfr_init2 (x, 123);
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mpfr_init2 (sh, 123);
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mpfr_init2 (ch, 123);
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/* nan */
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mpfr_set_nan (x);
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mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_nan_p (sh));
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MPFR_ASSERTN (mpfr_nan_p (ch));
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/* +inf */
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mpfr_set_inf (x, 1);
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mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_inf_p (sh));
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MPFR_ASSERTN (mpfr_sgn (sh) > 0);
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MPFR_ASSERTN (mpfr_inf_p (ch));
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MPFR_ASSERTN (mpfr_sgn (ch) > 0);
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/* -inf */
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mpfr_set_inf (x, -1);
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mpfr_sinh_cosh (sh, ch, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_inf_p (sh));
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MPFR_ASSERTN (mpfr_sgn (sh) < 0);
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MPFR_ASSERTN (mpfr_inf_p (ch));
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MPFR_ASSERTN (mpfr_sgn (ch) > 0);
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mpfr_clear (x);
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mpfr_clear (sh);
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mpfr_clear (ch);
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}
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int
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main (int argc, char *argv[])
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{
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int i;
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mpfr_t x;
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tests_start_mpfr ();
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check_nans ();
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/* check against values given by sinh(x), cosh(x) */
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mpfr_init2 (x, 53);
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mpfr_set_str (x, "FEDCBA987654321p-48", 16, MPFR_RNDN);
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for (i = 0; i < 10; ++i)
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{
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/* x = i - x / 2 : boggle sign and bits */
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mpfr_ui_sub (x, i, x, MPFR_RNDD);
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mpfr_div_2ui (x, x, 2, MPFR_RNDD);
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check (x, MPFR_RNDN);
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check (x, MPFR_RNDU);
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check (x, MPFR_RNDD);
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}
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mpfr_clear (x);
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tests_end_mpfr ();
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return 0;
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}
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