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.
124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
/* Test file for mpfr_log2p1.
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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_log2p1
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#define TEST_RANDOM_EMAX 80
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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 inex;
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mpfr_init2 (x, MPFR_PREC_MIN);
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mpfr_set_nan (x);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_nan_p (x) && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == MPFR_FLAGS_NAN);
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mpfr_set_inf (x, -1);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_nan_p (x) && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == MPFR_FLAGS_NAN);
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mpfr_set_inf (x, 1);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_inf_p (x) && mpfr_sgn (x) > 0 && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == 0);
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mpfr_set_ui (x, 0, MPFR_RNDN);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_cmp_ui (x, 0) == 0 && MPFR_IS_POS (x) && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == 0);
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mpfr_neg (x, x, MPFR_RNDN);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_cmp_ui (x, 0) == 0 && MPFR_IS_NEG (x) && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == 0);
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mpfr_set_si (x, -1, MPFR_RNDN);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_inf_p (x) && mpfr_sgn (x) < 0 && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == MPFR_FLAGS_DIVBY0);
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mpfr_set_si (x, -2, MPFR_RNDN);
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mpfr_clear_flags ();
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_nan_p (x) && inex == 0);
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MPFR_ASSERTN (__gmpfr_flags == MPFR_FLAGS_NAN);
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/* include one hard-coded test */
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mpfr_set_prec (x, 32);
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mpfr_set_ui (x, 17, MPFR_RNDN);
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inex = mpfr_log2p1 (x, x, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_cmp_ui_2exp (x, 1119355719UL, -28) == 0);
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MPFR_ASSERTN (inex < 0);
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mpfr_clear (x);
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}
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/* check exact cases, when 1+x = 2^k */
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static void
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check_exact (void)
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{
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mpfr_exp_t k;
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mpfr_t x;
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int inex, r;
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#define KMAX 100
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mpfr_init2 (x, KMAX);
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for (k = -KMAX; k <= KMAX; k++)
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RND_LOOP (r)
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{
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mpfr_set_ui_2exp (x, 1, k, (mpfr_rnd_t) r);
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inex = mpfr_sub_ui (x, x, 1, (mpfr_rnd_t) r);
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MPFR_ASSERTN(inex == 0);
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inex = mpfr_log2p1 (x, x, (mpfr_rnd_t) r);
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MPFR_ASSERTN(mpfr_cmp_si0 (x, k) == 0);
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MPFR_ASSERTN(inex == 0);
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}
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mpfr_clear (x);
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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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special ();
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check_exact ();
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test_generic (MPFR_PREC_MIN, 100, 50);
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tests_end_mpfr ();
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return 0;
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}
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