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Unified Diff: gcc/mpfr/tests/tdiv_ui.c

Issue 3050029: [gcc] GCC 4.5.0=>4.5.1 (Closed) Base URL: ssh://git@gitrw.chromium.org:9222/nacl-toolchain.git
Patch Set: Created 10 years, 5 months ago
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Index: gcc/mpfr/tests/tdiv_ui.c
diff --git a/gcc/mpfr/tests/tdiv_ui.c b/gcc/mpfr/tests/tdiv_ui.c
deleted file mode 100644
index 80f0e3961d1ed96f7a0fcfc207db888785b11c11..0000000000000000000000000000000000000000
--- a/gcc/mpfr/tests/tdiv_ui.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/* Test file for mpfr_div_ui.
-
-Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-Contributed by the Arenaire and Cacao projects, INRIA.
-
-This file is part of the GNU MPFR Library.
-
-The GNU MPFR Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or (at your
-option) any later version.
-
-The GNU MPFR Library is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
-License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with the GNU MPFR Library; see the file COPYING.LIB. If not, write to
-the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
-MA 02110-1301, USA. */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <float.h>
-
-#include "mpfr-test.h"
-
-static void
-check (const char *ds, unsigned long u, mp_rnd_t rnd, const char *es)
-{
- mpfr_t x, y;
-
- mpfr_init2 (x, 53);
- mpfr_init2 (y, 53);
- mpfr_set_str1 (x, ds);
- mpfr_div_ui (y, x, u, rnd);
- if (mpfr_cmp_str1 (y, es))
- {
- printf ("mpfr_div_ui failed for x=%s, u=%lu, rnd=%s\n", ds, u,
- mpfr_print_rnd_mode (rnd));
- printf ("expected result is %s, got", es);
- mpfr_out_str(stdout, 10, 0, y, GMP_RNDN);
- exit (1);
- }
- mpfr_clear (x);
- mpfr_clear (y);
-}
-
-static void
-special (void)
-{
- mpfr_t x, y;
- unsigned xprec, yprec;
-
- mpfr_init (x);
- mpfr_init (y);
-
- mpfr_set_prec (x, 32);
- mpfr_set_prec (y, 32);
- mpfr_set_ui (x, 1, GMP_RNDN);
- mpfr_div_ui (y, x, 3, GMP_RNDN);
-
- mpfr_set_prec (x, 100);
- mpfr_set_prec (y, 100);
- mpfr_urandomb (x, RANDS);
- mpfr_div_ui (y, x, 123456, GMP_RNDN);
- mpfr_set_ui (x, 0, GMP_RNDN);
- mpfr_div_ui (y, x, 123456789, GMP_RNDN);
- if (mpfr_cmp_ui (y, 0))
- {
- printf ("mpfr_div_ui gives non-zero for 0/ui\n");
- exit (1);
- }
-
- /* bug found by Norbert Mueller, 21 Aug 2001 */
- mpfr_set_prec (x, 110);
- mpfr_set_prec (y, 60);
- mpfr_set_str_binary (x, "0.110101110011111110011111001110011001110111000000111110001000111011000011E-44");
- mpfr_div_ui (y, x, 17, GMP_RNDN);
- mpfr_set_str_binary (x, "0.11001010100101100011101110000001100001010110101001010011011E-48");
- if (mpfr_cmp (x, y))
- {
- printf ("Error in x/17 for x=1/16!\n");
- printf ("Expected ");
- mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
- printf ("\nGot ");
- mpfr_out_str (stdout, 2, 0, y, GMP_RNDN);
- printf ("\n");
- exit (1);
- }
-
- /* corner case */
- mpfr_set_prec (x, 2 * mp_bits_per_limb);
- mpfr_set_prec (y, 2);
- mpfr_set_ui (x, 4, GMP_RNDN);
- mpfr_nextabove (x);
- mpfr_div_ui (y, x, 2, GMP_RNDN); /* exactly in the middle */
- MPFR_ASSERTN(mpfr_cmp_ui (y, 2) == 0);
-
- mpfr_set_prec (x, 3 * mp_bits_per_limb);
- mpfr_set_prec (y, 2);
- mpfr_set_ui (x, 2, GMP_RNDN);
- mpfr_nextabove (x);
- mpfr_div_ui (y, x, 2, GMP_RNDN);
- MPFR_ASSERTN(mpfr_cmp_ui (y, 1) == 0);
-
- mpfr_set_prec (x, 3 * mp_bits_per_limb);
- mpfr_set_prec (y, 2);
- mpfr_set_si (x, -4, GMP_RNDN);
- mpfr_nextbelow (x);
- mpfr_div_ui (y, x, 2, GMP_RNDD);
- MPFR_ASSERTN(mpfr_cmp_si (y, -3) == 0);
-
- for (xprec = 53; xprec <= 128; xprec++)
- {
- mpfr_set_prec (x, xprec);
- mpfr_set_str_binary (x, "0.1100100100001111110011111000000011011100001100110111E2");
- for (yprec = 53; yprec <= 128; yprec++)
- {
- mpfr_set_prec (y, yprec);
- mpfr_div_ui (y, x, 1, GMP_RNDN);
- if (mpfr_cmp(x,y))
- {
- printf ("division by 1.0 fails for xprec=%u, yprec=%u\n", xprec, yprec);
- printf ("expected "); mpfr_print_binary (x); puts ("");
- printf ("got "); mpfr_print_binary (y); puts ("");
- exit (1);
- }
- }
- }
-
- /* Bug reported by Mark Dickinson, 6 Nov 2007 */
- mpfr_set_si (x, 0, GMP_RNDN);
- mpfr_set_si (y, -1, GMP_RNDN);
- mpfr_div_ui (y, x, 4, GMP_RNDN);
- MPFR_ASSERTN(MPFR_IS_ZERO(y) && MPFR_IS_POS(y));
-
- mpfr_clear (x);
- mpfr_clear (y);
-}
-
-static void
-check_inexact (void)
-{
- mpfr_t x, y, z;
- mp_prec_t px, py;
- int inexact, cmp;
- unsigned long int u;
- int rnd;
-
- mpfr_init (x);
- mpfr_init (y);
- mpfr_init (z);
-
- for (px=2; px<300; px++)
- {
- mpfr_set_prec (x, px);
- mpfr_urandomb (x, RANDS);
- do
- {
- u = randlimb ();
- }
- while (u == 0);
- for (py=2; py<300; py++)
- {
- mpfr_set_prec (y, py);
- mpfr_set_prec (z, py + mp_bits_per_limb);
- for (rnd = 0; rnd < GMP_RND_MAX; rnd++)
- {
- inexact = mpfr_div_ui (y, x, u, (mp_rnd_t) rnd);
- if (mpfr_mul_ui (z, y, u, (mp_rnd_t) rnd))
- {
- printf ("z <- y * u should be exact for u=%lu\n", u);
- printf ("y="); mpfr_print_binary (y); puts ("");
- printf ("z="); mpfr_print_binary (z); puts ("");
- exit (1);
- }
- cmp = mpfr_cmp (z, x);
- if (((inexact == 0) && (cmp != 0)) ||
- ((inexact > 0) && (cmp <= 0)) ||
- ((inexact < 0) && (cmp >= 0)))
- {
- printf ("Wrong inexact flag for u=%lu, rnd=%s\n", u,
- mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- printf ("x="); mpfr_print_binary (x); puts ("");
- printf ("y="); mpfr_print_binary (y); puts ("");
- exit (1);
- }
- }
- }
- }
-
- mpfr_clear (x);
- mpfr_clear (y);
- mpfr_clear (z);
-}
-
-#define TEST_FUNCTION mpfr_div_ui
-#define INTEGER_TYPE unsigned long
-#define RAND_FUNCTION(x) mpfr_random2(x, MPFR_LIMB_SIZE (x), 1)
-#include "tgeneric_ui.c"
-
-int
-main (int argc, char **argv)
-{
- mpfr_t x;
-
- tests_start_mpfr ();
-
- special ();
-
- check_inexact ();
-
- check("1.0", 3, GMP_RNDN, "3.3333333333333331483e-1");
- check("1.0", 3, GMP_RNDZ, "3.3333333333333331483e-1");
- check("1.0", 3, GMP_RNDU, "3.3333333333333337034e-1");
- check("1.0", 3, GMP_RNDD, "3.3333333333333331483e-1");
- check("1.0", 2116118, GMP_RNDN, "4.7256343927890600483e-7");
- check("1.098612288668109782", 5, GMP_RNDN, "0.21972245773362195087");
-
- mpfr_init2 (x, 53);
- mpfr_set_ui (x, 3, GMP_RNDD);
- mpfr_log (x, x, GMP_RNDD);
- mpfr_div_ui (x, x, 5, GMP_RNDD);
- if (mpfr_cmp_str1 (x, "0.21972245773362189536"))
- {
- printf ("Error in mpfr_div_ui for x=ln(3), u=5\n");
- exit (1);
- }
- mpfr_clear (x);
-
- test_generic_ui (2, 200, 100);
-
- tests_end_mpfr ();
- return 0;
-}
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