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.
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* Test file for mpfr_reldiff.
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Copyright 2000-2025 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 SPECIAL_MAX 12
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/* copied from reuse.c */
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static void
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set_special (mpfr_ptr x, unsigned int select)
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{
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MPFR_ASSERTN (select < SPECIAL_MAX);
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switch (select)
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{
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case 0:
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MPFR_SET_NAN (x);
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break;
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case 1:
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MPFR_SET_INF (x);
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MPFR_SET_POS (x);
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break;
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case 2:
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MPFR_SET_INF (x);
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MPFR_SET_NEG (x);
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break;
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case 3:
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MPFR_SET_ZERO (x);
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MPFR_SET_POS (x);
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break;
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case 4:
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MPFR_SET_ZERO (x);
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MPFR_SET_NEG (x);
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break;
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case 5:
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mpfr_set_str_binary (x, "1");
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break;
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case 6:
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mpfr_set_str_binary (x, "-1");
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break;
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case 7:
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mpfr_set_str_binary (x, "1e-1");
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break;
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case 8:
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mpfr_set_str_binary (x, "1e+1");
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break;
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case 9:
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mpfr_const_pi (x, MPFR_RNDN);
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break;
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case 10:
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mpfr_const_pi (x, MPFR_RNDN);
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MPFR_SET_EXP (x, MPFR_GET_EXP (x)-1);
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break;
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case 11:
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mpfr_urandomb (x, RANDS);
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if (RAND_BOOL ())
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mpfr_neg (x, x, MPFR_RNDN);
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break;
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default:
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MPFR_ASSERTN (0);
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}
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}
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int
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main (void)
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{
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mpfr_t a1, a2, b, c;
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int pa, pb, pc, i, j, r;
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int prec[] = { MPFR_PREC_MIN, 3, 16, 32, 53 };
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tests_start_mpfr ();
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/* Just check that mpfr_reldiff(a,b,c,rnd) computes |b-c|/b using the
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precision of a, without any optimization. */
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for (pa = 0; pa < numberof(prec); pa++)
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{
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mpfr_inits2 (prec[pa], a1, a2, (mpfr_ptr) 0);
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for (pb = 0; pb < numberof(prec); pb++)
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{
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mpfr_init2 (b, prec[pb]);
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for (pc = 0; pc < numberof(prec); pc++)
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{
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mpfr_init2 (c, prec[pc]);
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for (i = 0; i < SPECIAL_MAX; i++)
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{
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set_special (b, i);
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for (j = 0; j < SPECIAL_MAX; j++)
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{
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set_special (c, j);
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RND_LOOP (r)
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{
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mpfr_rnd_t rnd = (mpfr_rnd_t) r;
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mpfr_sub (a1, b, c, rnd);
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mpfr_abs (a1, a1, rnd);
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mpfr_div (a1, a1, b, rnd);
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mpfr_reldiff (a2, b, c, rnd);
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if (! SAME_VAL (a1, a2))
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{
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printf ("Error for pa=%d pb=%d pc=%d "
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"i=%d j=%d rnd=%s\n", pa, pb, pc,
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i, j, mpfr_print_rnd_mode (rnd));
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printf ("expected ");
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mpfr_dump (a1);
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printf ("got ");
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mpfr_dump (a2);
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exit (1);
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}
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}
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}
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}
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mpfr_clear (c);
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}
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mpfr_clear (b);
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}
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mpfr_clears (a1, a2, (mpfr_ptr) 0);
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}
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tests_end_mpfr ();
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return 0;
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}
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