vasilito
facf0c92e0
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148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/* Test file for mpfr_sinh.
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Copyright 2001-2002, 2004, 2006-2025 Free Software Foundation, Inc.
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Contributed by the Pascaline 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.
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If not, see <https://www.gnu.org/licenses/>. */
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#include "mpfr-test.h"
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#define TEST_FUNCTION mpfr_sinh
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#define TEST_RANDOM_EMIN -36
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#define TEST_RANDOM_EMAX 36
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#include "tgeneric.c"
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static void
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special (void)
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{
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mpfr_t x;
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int i;
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mpfr_init (x);
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mpfr_set_nan (x);
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mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_nan_p (x));
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mpfr_set_inf (x, 1);
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mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) > 0);
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mpfr_set_inf (x, -1);
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mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) < 0);
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mpfr_set_prec (x, 10);
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mpfr_set_str_binary (x, "-0.1001011001");
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mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -159, -8) == 0);
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/* corner case */
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mpfr_set_prec (x, 2);
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mpfr_set_str_binary (x, "1E-6");
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mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_cmp_ui_2exp (x, 1, -6) == 0);
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mpfr_clear_flags ();
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mpfr_set_str_binary (x, "1E1000000000");
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i = mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN (MPFR_IS_INF (x) && MPFR_IS_POS (x));
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MPFR_ASSERTN (mpfr_overflow_p ());
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MPFR_ASSERTN (i == 1);
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mpfr_clear_flags ();
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mpfr_set_str_binary (x, "-1E1000000000");
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i = mpfr_sinh (x, x, MPFR_RNDN);
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MPFR_ASSERTN (MPFR_IS_INF (x) && MPFR_IS_NEG (x));
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MPFR_ASSERTN (mpfr_overflow_p () && !mpfr_underflow_p ());
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MPFR_ASSERTN (i == -1);
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mpfr_clear_flags ();
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mpfr_set_str_binary (x, "-1E1000000000");
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i = mpfr_sinh (x, x, MPFR_RNDD);
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MPFR_ASSERTN (MPFR_IS_INF (x) && MPFR_IS_NEG (x));
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MPFR_ASSERTN (mpfr_overflow_p () && !mpfr_underflow_p ());
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MPFR_ASSERTN (i == -1);
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mpfr_clear_flags ();
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mpfr_set_str_binary (x, "-1E1000000000");
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i = mpfr_sinh (x, x, MPFR_RNDU);
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MPFR_ASSERTN (!MPFR_IS_INF (x) && MPFR_IS_NEG (x));
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MPFR_ASSERTN (mpfr_overflow_p () && !mpfr_underflow_p ());
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MPFR_ASSERTN (i == 1);
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mpfr_clear (x);
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}
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/* exercise mpfr_sinh near the overflow limit */
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static void
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coverage (void)
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{
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#if _MPFR_EXP_FORMAT >= 3 && ULONG_MAX == 0xffffffffffffffff
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mpfr_t x, y;
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int inex;
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mpfr_exp_t emax;
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emax = mpfr_get_emax ();
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mpfr_init2 (x, 64);
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mpfr_init2 (y, 64);
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MPFR_ASSERTN(mpfr_get_emax_max () == 4611686018427387903UL); /* 2^62-1 */
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set_emax (mpfr_get_emax_max ());
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mpfr_set_ui (x, 3196577161300663915UL, MPFR_RNDN);
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mpfr_clear_overflow ();
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/* exp(x) overflows, cosh(x/2)*sinh(x/2) does not overflow,
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but 2*cosh(x/2)*sinh(x/2) overflows */
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inex = mpfr_sinh (y, x, MPFR_RNDZ);
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MPFR_ASSERTN(mpfr_cmp_ui_2exp (y, 18446744073709551615UL, 4611686018427387839UL) == 0);
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MPFR_ASSERTN(inex < 0);
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MPFR_ASSERTN(mpfr_overflow_p ());
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mpfr_set_prec (x, 65);
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mpfr_set_str (x, "3196577161300663914.5", 10, MPFR_RNDN);
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mpfr_clear_overflow ();
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/* exp(x) overflows, cosh(x/2)*sinh(x/2) does not overflow,
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and 2*cosh(x/2)*sinh(x/2) does not overflow */
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inex = mpfr_sinh (y, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_cmp_ui_2exp (y, 11795642775994293059UL, 4611686018427387839UL) == 0);
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MPFR_ASSERTN(inex > 0);
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MPFR_ASSERTN(!mpfr_overflow_p ());
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mpfr_clear (x);
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mpfr_clear (y);
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set_emax (emax);
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#endif
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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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tests_start_mpfr ();
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coverage ();
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special ();
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test_generic (MPFR_PREC_MIN, 100, 100);
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data_check ("data/sinh", mpfr_sinh, "mpfr_sinh");
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bad_cases (mpfr_sinh, mpfr_asinh, "mpfr_sinh", 256, -256, 255,
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4, 128, 800, 100);
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tests_end_mpfr ();
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return 0;
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}
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