vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
155 lines
3.9 KiB
C
155 lines
3.9 KiB
C
/* Test file for mpfr_tanh.
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Copyright 2001-2025 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_tanh
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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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mpfr_init (x);
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mpfr_set_nan (x);
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mpfr_tanh (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_tanh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_cmp_ui (x, 1) == 0);
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mpfr_set_inf (x, -1);
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mpfr_tanh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_cmp_si (x, -1) == 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_tanh (x, x, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_cmp_si_2exp (x, -135, -8) == 0);
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mpfr_clear (x);
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}
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static void
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special_overflow (void)
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{
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mpfr_t x, y;
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int i;
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mpfr_exp_t emin, emax;
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emin = mpfr_get_emin ();
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emax = mpfr_get_emax ();
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mpfr_clear_overflow ();
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set_emin (-125);
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set_emax (128);
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mpfr_init2 (x, 24);
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mpfr_init2 (y, 24);
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mpfr_set_str_binary (x, "0.101100100000000000110100E7");
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i = mpfr_tanh (y, x, MPFR_RNDN);
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if (mpfr_cmp_ui (y, 1) || i != 1)
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{
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printf("Overflow error (1). i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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MPFR_ASSERTN (!mpfr_overflow_p ());
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i = mpfr_tanh (y, x, MPFR_RNDZ);
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if (mpfr_cmp_str (y, "0.111111111111111111111111E0", 2, MPFR_RNDN)
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|| i != -1)
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{
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printf("Overflow error (2).i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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MPFR_ASSERTN (!mpfr_overflow_p ());
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set_emin (emin);
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set_emax (emax);
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mpfr_set_str_binary (x, "0.1E1000000000");
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i = mpfr_tanh (y, x, MPFR_RNDN);
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if (mpfr_cmp_ui (y, 1) || i != 1)
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{
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printf("Overflow error (3). i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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MPFR_ASSERTN (!mpfr_overflow_p ());
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mpfr_set_str_binary (x, "-0.1E1000000000");
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i = mpfr_tanh (y, x, MPFR_RNDU);
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if (mpfr_cmp_str (y, "-0.111111111111111111111111E0", 2, MPFR_RNDN)
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|| i != 1)
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{
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printf("Overflow error (4). i=%d\ny=", i);
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mpfr_dump (y);
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exit (1);
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}
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mpfr_clear (y);
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mpfr_clear (x);
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}
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/* This test was generated from bad_cases, with input y=-7.778@-1 = -3823/8192.
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For the x value below, we have atanh(y) < x, thus since tanh() is increasing,
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y < tanh(x), and thus tanh(x) rounded toward zero should give -3822/8192. */
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static void
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bug20171218 (void)
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{
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mpfr_t x, y, z;
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mpfr_init2 (x, 813);
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mpfr_init2 (y, 12);
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mpfr_init2 (z, 12);
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mpfr_set_str (x, "-8.17cd20bfc17ae00935dc3abad8e17ab43d3ef7740c320798eefb93191f4a62dba9a2daa5efb6eace21130abd87e3ee2eadd2ad8ddae883d2f2db5dee1ac7ce3c59d16eca09e2ca3f21dc2a0386c037a0d3972e62d5b6e82446032020705553c566b1df24f40@-1", 16, MPFR_RNDN);
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mpfr_tanh (y, x, MPFR_RNDZ);
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mpfr_set_str (z, "-7.770@-1", 16, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_equal_p (y, z));
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mpfr_clear (x);
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mpfr_clear (y);
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mpfr_clear (z);
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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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bug20171218 ();
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special_overflow ();
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special ();
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test_generic (MPFR_PREC_MIN, 100, 100);
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data_check ("data/tanh", mpfr_tanh, "mpfr_tanh");
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bad_cases (mpfr_tanh, mpfr_atanh, "mpfr_tanh", 256, -128, 0,
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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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