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465 lines
12 KiB
C
465 lines
12 KiB
C
/* Test file for mpfr_set_si and mpfr_set_ui.
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Copyright 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
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Contributed by the AriC and Caramel 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. If not, see
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http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <limits.h>
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#include "mpfr-test.h"
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#define ERROR(str) {printf("Error for "str"\n"); exit(1);}
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static void
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test_2exp (void)
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{
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mpfr_t x;
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int res;
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mpfr_init2 (x, 32);
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mpfr_set_ui_2exp (x, 1, 0, MPFR_RNDN);
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if (mpfr_cmp_ui(x, 1))
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ERROR("(1U,0)");
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mpfr_set_ui_2exp (x, 1024, -10, MPFR_RNDN);
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if (mpfr_cmp_ui(x, 1))
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ERROR("(1024U,-10)");
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mpfr_set_ui_2exp (x, 1024, 10, MPFR_RNDN);
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if (mpfr_cmp_ui(x, 1024*1024))
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ERROR("(1024U,+10)");
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mpfr_set_si_2exp (x, -1024L * 1024L, -10, MPFR_RNDN);
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if (mpfr_cmp_si(x, -1024))
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ERROR("(1M,-10)");
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mpfr_set_ui_2exp (x, 0x92345678, 16, MPFR_RNDN);
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if (mpfr_cmp_str (x, "92345678@4", 16, MPFR_RNDN))
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ERROR("(x92345678U,+16)");
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mpfr_set_si_2exp (x, -0x1ABCDEF0, -256, MPFR_RNDN);
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if (mpfr_cmp_str (x, "-1ABCDEF0@-64", 16, MPFR_RNDN))
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ERROR("(-x1ABCDEF0,-256)");
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mpfr_set_prec (x, 2);
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res = mpfr_set_si_2exp (x, 7, 10, MPFR_RNDU);
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if (mpfr_cmp_ui (x, 1<<13) || res <= 0)
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ERROR ("Prec 2 + si_2exp");
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res = mpfr_set_ui_2exp (x, 7, 10, MPFR_RNDU);
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if (mpfr_cmp_ui (x, 1<<13) || res <= 0)
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ERROR ("Prec 2 + ui_2exp");
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mpfr_clear_flags ();
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mpfr_set_ui_2exp (x, 17, MPFR_EMAX_MAX, MPFR_RNDN);
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if (!mpfr_inf_p (x) || MPFR_IS_NEG (x))
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ERROR ("mpfr_set_ui_2exp and overflow (bad result)");
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if (!mpfr_overflow_p ())
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ERROR ("mpfr_set_ui_2exp and overflow (overflow flag not set)");
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mpfr_clear_flags ();
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mpfr_set_si_2exp (x, 17, MPFR_EMAX_MAX, MPFR_RNDN);
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if (!mpfr_inf_p (x) || MPFR_IS_NEG (x))
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ERROR ("mpfr_set_si_2exp (pos) and overflow (bad result)");
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if (!mpfr_overflow_p ())
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ERROR ("mpfr_set_si_2exp (pos) and overflow (overflow flag not set)");
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mpfr_clear_flags ();
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mpfr_set_si_2exp (x, -17, MPFR_EMAX_MAX, MPFR_RNDN);
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if (!mpfr_inf_p (x) || MPFR_IS_POS (x))
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ERROR ("mpfr_set_si_2exp (neg) and overflow (bad result)");
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if (!mpfr_overflow_p ())
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ERROR ("mpfr_set_si_2exp (neg) and overflow (overflow flag not set)");
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mpfr_clear (x);
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}
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static void
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test_macros (void)
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{
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mpfr_t x[3];
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mpfr_ptr p;
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int r;
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mpfr_inits (x[0], x[1], x[2], (mpfr_ptr) 0);
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p = x[0];
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r = 0;
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mpfr_set_ui (p++, 0, (mpfr_rnd_t) r++);
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if (p != x[1] || r != 1)
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{
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printf ("Error in mpfr_set_ui macro: p - x[0] = %d (expecting 1), "
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"r = %d (expecting 1)\n", (int) (p - x[0]), r);
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exit (1);
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}
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p = x[0];
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r = 0;
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mpfr_set_si (p++, 0, (mpfr_rnd_t) r++);
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if (p != x[1] || r != 1)
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{
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printf ("Error in mpfr_set_si macro: p - x[0] = %d (expecting 1), "
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"r = %d (expecting 1)\n", (int) (p - x[0]), r);
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exit (1);
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}
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mpfr_clears (x[0], x[1], x[2], (mpfr_ptr) 0);
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}
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static void
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test_macros_keyword (void)
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{
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mpfr_t x;
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unsigned long i;
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mpfr_init2 (x, 64);
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#define MKN 0x1000000
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#define long short
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mpfr_set_ui (x, MKN, MPFR_RNDN);
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#undef long
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i = mpfr_get_ui (x, MPFR_RNDN);
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if (i != MKN)
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{
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printf ("Error in test_macros_keyword: expected 0x%lx, got 0x%lx.\n",
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(unsigned long) MKN, i);
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exit (1);
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}
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mpfr_clear (x);
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}
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/* FIXME: Comparing against mpfr_get_si/ui is not ideal, it'd be better to
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have all tests examine the bits in mpfr_t for what should come out. */
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int
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main (int argc, char *argv[])
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{
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mpfr_t x;
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long k, z, d, N;
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unsigned long zl, dl;
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int inex;
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int r;
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mpfr_exp_t emin, emax;
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int flag;
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tests_start_mpfr ();
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mpfr_init2 (x, 100);
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N = (argc==1) ? 100000 : atol (argv[1]);
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for (k = 1; k <= N; k++)
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{
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z = (long) (randlimb () & LONG_MAX) + LONG_MIN / 2;
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inex = mpfr_set_si (x, z, MPFR_RNDZ);
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d = mpfr_get_si (x, MPFR_RNDZ);
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if (d != z)
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{
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printf ("Error in mpfr_set_si: expected %ld got %ld\n", z, d);
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exit (1);
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}
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if (inex)
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{
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printf ("Error in mpfr_set_si: inex value incorrect for %ld: %d\n",
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z, inex);
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exit (1);
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}
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}
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for (k = 1; k <= N; k++)
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{
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zl = randlimb ();
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inex = mpfr_set_ui (x, zl, MPFR_RNDZ);
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dl = mpfr_get_ui (x, MPFR_RNDZ);
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if (dl != zl)
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{
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printf ("Error in mpfr_set_ui: expected %lu got %lu\n", zl, dl);
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exit (1);
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}
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if (inex)
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{
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printf ("Error in mpfr_set_ui: inex value incorrect for %lu: %d\n",
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zl, inex);
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exit (1);
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}
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}
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mpfr_set_prec (x, 2);
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if (mpfr_set_si (x, 5, MPFR_RNDZ) >= 0)
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{
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printf ("Wrong inexact flag for x=5, rnd=MPFR_RNDZ\n");
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exit (1);
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}
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mpfr_set_prec (x, 2);
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if (mpfr_set_si (x, -5, MPFR_RNDZ) <= 0)
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{
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printf ("Wrong inexact flag for x=-5, rnd=MPFR_RNDZ\n");
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exit (1);
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}
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mpfr_set_prec (x, 3);
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inex = mpfr_set_si (x, 77617, MPFR_RNDD); /* should be 65536 */
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if (MPFR_MANT(x)[0] != ((mp_limb_t)1 << (mp_bits_per_limb-1))
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|| inex >= 0)
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{
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printf ("Error in mpfr_set_si(x:3, 77617, MPFR_RNDD)\n");
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mpfr_print_binary (x);
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puts ("");
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exit (1);
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}
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inex = mpfr_set_ui (x, 77617, MPFR_RNDD); /* should be 65536 */
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if (MPFR_MANT(x)[0] != ((mp_limb_t)1 << (mp_bits_per_limb-1))
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|| inex >= 0)
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{
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printf ("Error in mpfr_set_ui(x:3, 77617, MPFR_RNDD)\n");
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mpfr_print_binary (x);
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puts ("");
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exit (1);
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}
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mpfr_set_prec (x, 2);
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inex = mpfr_set_si (x, 33096, MPFR_RNDU);
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if (mpfr_get_si (x, MPFR_RNDZ) != 49152 || inex <= 0)
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{
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printf ("Error in mpfr_set_si, exp. 49152, got %ld, inex %d\n",
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mpfr_get_si (x, MPFR_RNDZ), inex);
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exit (1);
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}
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inex = mpfr_set_ui (x, 33096, MPFR_RNDU);
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if (mpfr_get_si (x, MPFR_RNDZ) != 49152)
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{
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printf ("Error in mpfr_set_ui, exp. 49152, got %ld, inex %d\n",
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mpfr_get_si (x, MPFR_RNDZ), inex);
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exit (1);
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}
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/* Also test the mpfr_set_ui function (instead of macro). */
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inex = (mpfr_set_ui) (x, 33096, MPFR_RNDU);
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if (mpfr_get_si (x, MPFR_RNDZ) != 49152)
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{
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printf ("Error in mpfr_set_ui function, exp. 49152, got %ld, inex %d\n",
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mpfr_get_si (x, MPFR_RNDZ), inex);
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exit (1);
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}
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for (r = 0 ; r < MPFR_RND_MAX ; r++)
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{
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mpfr_set_si (x, -1, (mpfr_rnd_t) r);
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mpfr_set_ui (x, 0, (mpfr_rnd_t) r);
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if (MPFR_IS_NEG (x) || mpfr_get_ui (x, (mpfr_rnd_t) r) != 0)
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{
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printf ("mpfr_set_ui (x, 0) gives -0 for %s\n",
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mpfr_print_rnd_mode ((mpfr_rnd_t) r));
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exit (1);
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}
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mpfr_set_si (x, -1, (mpfr_rnd_t) r);
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mpfr_set_si (x, 0, (mpfr_rnd_t) r);
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if (MPFR_IS_NEG (x) || mpfr_get_si (x, (mpfr_rnd_t) r) != 0)
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{
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printf ("mpfr_set_si (x, 0) gives -0 for %s\n",
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mpfr_print_rnd_mode ((mpfr_rnd_t) r));
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exit (1);
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}
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}
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/* check potential bug in case mp_limb_t is unsigned */
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emax = mpfr_get_emax ();
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set_emax (0);
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mpfr_set_si (x, -1, MPFR_RNDN);
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if (mpfr_sgn (x) >= 0)
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{
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printf ("mpfr_set_si (x, -1) fails\n");
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exit (1);
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}
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set_emax (emax);
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emax = mpfr_get_emax ();
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set_emax (5);
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mpfr_set_prec (x, 2);
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mpfr_set_si (x, -31, MPFR_RNDN);
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if (mpfr_sgn (x) >= 0)
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{
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printf ("mpfr_set_si (x, -31) fails\n");
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exit (1);
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}
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set_emax (emax);
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/* test for get_ui */
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mpfr_set_ui (x, 0, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_get_ui (x, MPFR_RNDN) == 0);
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mpfr_set_ui (x, ULONG_MAX, MPFR_RNDU);
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mpfr_nextabove (x);
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mpfr_get_ui (x, MPFR_RNDU);
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/* another test for get_ui */
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mpfr_set_prec (x, 10);
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mpfr_set_str_binary (x, "10.101");
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dl = mpfr_get_ui (x, MPFR_RNDN);
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MPFR_ASSERTN (dl == 3);
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mpfr_set_str_binary (x, "-1.0");
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mpfr_get_ui (x, MPFR_RNDN);
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mpfr_set_str_binary (x, "0.1");
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dl = mpfr_get_ui (x, MPFR_RNDN);
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MPFR_ASSERTN (dl == 0);
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dl = mpfr_get_ui (x, MPFR_RNDZ);
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MPFR_ASSERTN (dl == 0);
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dl = mpfr_get_ui (x, MPFR_RNDD);
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MPFR_ASSERTN (dl == 0);
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dl = mpfr_get_ui (x, MPFR_RNDU);
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MPFR_ASSERTN (dl == 1);
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/* coverage tests */
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mpfr_set_prec (x, 2);
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mpfr_set_si (x, -7, MPFR_RNDD);
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MPFR_ASSERTN(mpfr_cmp_si (x, -8) == 0);
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mpfr_set_prec (x, 2);
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mpfr_set_ui (x, 7, MPFR_RNDU);
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MPFR_ASSERTN(mpfr_cmp_ui (x, 8) == 0);
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emax = mpfr_get_emax ();
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set_emax (3);
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mpfr_set_ui (x, 7, MPFR_RNDU);
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MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) > 0);
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set_emax (1);
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MPFR_ASSERTN( mpfr_set_ui (x, 7, MPFR_RNDU) );
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MPFR_ASSERTN(mpfr_inf_p (x) && mpfr_sgn (x) > 0);
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set_emax (emax);
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mpfr_set_ui_2exp (x, 17, -50, MPFR_RNDN);
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MPFR_ASSERTN (mpfr_get_ui (x, MPFR_RNDD) == 0);
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MPFR_ASSERTN (mpfr_get_si (x, MPFR_RNDD) == 0);
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/* Test for ERANGE flag + correct behaviour if overflow */
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mpfr_set_prec (x, 256);
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mpfr_set_ui (x, ULONG_MAX, MPFR_RNDN);
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mpfr_clear_erangeflag ();
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dl = mpfr_get_ui (x, MPFR_RNDN);
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if (dl != ULONG_MAX || mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_ui + ERANGE + ULONG_MAX (1)\n");
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exit (1);
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}
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mpfr_add_ui (x, x, 1, MPFR_RNDN);
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dl = mpfr_get_ui (x, MPFR_RNDN);
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if (dl != ULONG_MAX || !mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_ui + ERANGE + ULONG_MAX (2)\n");
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exit (1);
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}
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mpfr_set_si (x, -1, MPFR_RNDN);
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mpfr_clear_erangeflag ();
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dl = mpfr_get_ui (x, MPFR_RNDN);
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if (dl != 0 || !mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_ui + ERANGE + -1 \n");
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exit (1);
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}
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mpfr_set_si (x, LONG_MAX, MPFR_RNDN);
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mpfr_clear_erangeflag ();
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d = mpfr_get_si (x, MPFR_RNDN);
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if (d != LONG_MAX || mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_si + ERANGE + LONG_MAX (1): %ld\n", d);
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exit (1);
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}
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mpfr_add_ui (x, x, 1, MPFR_RNDN);
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d = mpfr_get_si (x, MPFR_RNDN);
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if (d != LONG_MAX || !mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_si + ERANGE + LONG_MAX (2)\n");
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exit (1);
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}
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mpfr_set_si (x, LONG_MIN, MPFR_RNDN);
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mpfr_clear_erangeflag ();
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d = mpfr_get_si (x, MPFR_RNDN);
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if (d != LONG_MIN || mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_si + ERANGE + LONG_MIN (1)\n");
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exit (1);
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}
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mpfr_sub_ui (x, x, 1, MPFR_RNDN);
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d = mpfr_get_si (x, MPFR_RNDN);
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if (d != LONG_MIN || !mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_si + ERANGE + LONG_MIN (2)\n");
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exit (1);
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}
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mpfr_set_nan (x);
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mpfr_clear_erangeflag ();
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d = mpfr_get_ui (x, MPFR_RNDN);
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if (d != 0 || !mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_ui + NaN\n");
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exit (1);
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}
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mpfr_clear_erangeflag ();
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d = mpfr_get_si (x, MPFR_RNDN);
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if (d != 0 || !mpfr_erangeflag_p ())
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{
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printf ("ERROR for get_si + NaN\n");
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exit (1);
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}
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emin = mpfr_get_emin ();
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mpfr_set_prec (x, 2);
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mpfr_set_emin (4);
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mpfr_clear_flags ();
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mpfr_set_ui (x, 7, MPFR_RNDU);
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flag = mpfr_underflow_p ();
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mpfr_set_emin (emin);
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if (mpfr_cmp_ui (x, 8) != 0)
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{
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printf ("Error for mpfr_set_ui (x, 7, MPFR_RNDU), prec = 2, emin = 4\n");
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exit (1);
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}
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if (flag)
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{
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printf ("mpfr_set_ui (x, 7, MPFR_RNDU) should not underflow "
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"with prec = 2, emin = 4\n");
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exit (1);
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}
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mpfr_set_emin (4);
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mpfr_clear_flags ();
|
|
mpfr_set_si (x, -7, MPFR_RNDD);
|
|
flag = mpfr_underflow_p ();
|
|
mpfr_set_emin (emin);
|
|
if (mpfr_cmp_si (x, -8) != 0)
|
|
{
|
|
printf ("Error for mpfr_set_si (x, -7, MPFR_RNDD), prec = 2, emin = 4\n");
|
|
exit (1);
|
|
}
|
|
if (flag)
|
|
{
|
|
printf ("mpfr_set_si (x, -7, MPFR_RNDD) should not underflow "
|
|
"with prec = 2, emin = 4\n");
|
|
exit (1);
|
|
}
|
|
|
|
mpfr_clear (x);
|
|
|
|
test_2exp ();
|
|
test_macros ();
|
|
test_macros_keyword ();
|
|
tests_end_mpfr ();
|
|
return 0;
|
|
}
|