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Unified Diff: gcc/gmp/tests/mpq/t-get_d.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/gmp/tests/mpq/t-get_d.c
diff --git a/gcc/gmp/tests/mpq/t-get_d.c b/gcc/gmp/tests/mpq/t-get_d.c
deleted file mode 100644
index f116189012a731f0d47f80e62c81743bcf12bf59..0000000000000000000000000000000000000000
--- a/gcc/gmp/tests/mpq/t-get_d.c
+++ /dev/null
@@ -1,272 +0,0 @@
-/* Test mpq_get_d and mpq_set_d
-
-Copyright 1991, 1993, 1994, 1996, 2000, 2001, 2002, 2003 Free Software
-Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP 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 3 of the License, or (at your
-option) any later version.
-
-The GNU MP 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 MP Library. If not, see http://www.gnu.org/licenses/. */
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "gmp.h"
-#include "gmp-impl.h"
-#include "tests.h"
-
-#ifndef SIZE
-#define SIZE 8
-#endif
-
-/* VAX D floats only have an 8 bit signed exponent, so anything 2^128 or
- bigger will overflow, that being 4 limbs. */
-#if defined (__vax__) && SIZE > 4
-#undef SIZE
-#define SIZE 4
-#define EPSIZE 3
-#else
-#define EPSIZE SIZE
-#endif
-
-void dump __GMP_PROTO ((mpq_t));
-
-void
-check_monotonic (int argc, char **argv)
-{
- mpq_t a;
- mp_size_t size;
- int reps = 100;
- int i, j;
- double last_d, new_d;
- mpq_t qlast_d, qnew_d;
- mpq_t eps;
-
- if (argc == 2)
- reps = atoi (argv[1]);
-
- /* The idea here is to test the monotonousness of mpq_get_d by adding
- numbers to the numerator and denominator. */
-
- mpq_init (a);
- mpq_init (eps);
- mpq_init (qlast_d);
- mpq_init (qnew_d);
-
- for (i = 0; i < reps; i++)
- {
- size = urandom () % SIZE - SIZE/2;
- mpz_random2 (mpq_numref (a), size);
- do
- {
- size = urandom () % SIZE - SIZE/2;
- mpz_random2 (mpq_denref (a), size);
- }
- while (mpz_cmp_ui (mpq_denref (a), 0) == 0);
-
- mpq_canonicalize (a);
-
- last_d = mpq_get_d (a);
- mpq_set_d (qlast_d, last_d);
- for (j = 0; j < 10; j++)
- {
- size = urandom () % EPSIZE + 1;
- mpz_random2 (mpq_numref (eps), size);
- size = urandom () % EPSIZE + 1;
- mpz_random2 (mpq_denref (eps), size);
- mpq_canonicalize (eps);
-
- mpq_add (a, a, eps);
- mpq_canonicalize (a);
- new_d = mpq_get_d (a);
- if (last_d > new_d)
- {
- printf ("\nERROR (test %d/%d): bad mpq_get_d results\n", i, j);
- printf ("last: %.16g\n", last_d);
- printf (" new: %.16g\n", new_d); dump (a);
- abort ();
- }
- mpq_set_d (qnew_d, new_d);
- MPQ_CHECK_FORMAT (qnew_d);
- if (mpq_cmp (qlast_d, qnew_d) > 0)
- {
- printf ("ERROR (test %d/%d): bad mpq_set_d results\n", i, j);
- printf ("last: %.16g\n", last_d); dump (qlast_d);
- printf (" new: %.16g\n", new_d); dump (qnew_d);
- abort ();
- }
- last_d = new_d;
- mpq_set (qlast_d, qnew_d);
- }
- }
-
- mpq_clear (a);
- mpq_clear (eps);
- mpq_clear (qlast_d);
- mpq_clear (qnew_d);
-}
-
-double
-my_ldexp (double d, int e)
-{
- for (;;)
- {
- if (e > 0)
- {
- if (e >= 16)
- {
- d *= 65536.0;
- e -= 16;
- }
- else
- {
- d *= 2.0;
- e -= 1;
- }
- }
- else if (e < 0)
- {
-
- if (e <= -16)
- {
- d /= 65536.0;
- e += 16;
- }
- else
- {
- d /= 2.0;
- e += 1;
- }
- }
- else
- return d;
- }
-}
-
-void
-check_random (int argc, char **argv)
-{
- double d, d2, nd, dd;
- mpq_t q;
- mp_limb_t rp[LIMBS_PER_DOUBLE + 1];
- int test, reps = 100000;
- int i;
-
- if (argc == 2)
- reps = 100 * atoi (argv[1]);
-
- mpq_init (q);
-
- for (test = 0; test < reps; test++)
- {
- mpn_random2 (rp, LIMBS_PER_DOUBLE + 1);
- d = 0.0;
- for (i = LIMBS_PER_DOUBLE - 1; i >= 0; i--)
- d = d * MP_BASE_AS_DOUBLE + rp[i];
- d = my_ldexp (d, (int) (rp[LIMBS_PER_DOUBLE] % 1000) - 500);
- mpq_set_d (q, d);
- nd = mpz_get_d (mpq_numref (q));
- dd = mpz_get_d (mpq_denref (q));
- d2 = nd / dd;
- if (d != d2)
- {
- printf ("ERROR (check_random test %d): bad mpq_set_d results\n", test);
- printf ("%.16g\n", d);
- printf ("%.16g\n", d2);
- abort ();
- }
- }
- mpq_clear (q);
-}
-
-void
-dump (mpq_t x)
-{
- mpz_out_str (stdout, 10, mpq_numref (x));
- printf ("/");
- mpz_out_str (stdout, 10, mpq_denref (x));
- printf ("\n");
-}
-
-/* Check various values 2^n and 1/2^n. */
-void
-check_onebit (void)
-{
- static const long data[] = {
- -3*GMP_NUMB_BITS-1, -3*GMP_NUMB_BITS, -3*GMP_NUMB_BITS+1,
- -2*GMP_NUMB_BITS-1, -2*GMP_NUMB_BITS, -2*GMP_NUMB_BITS+1,
- -GMP_NUMB_BITS-1, -GMP_NUMB_BITS, -GMP_NUMB_BITS+1,
- -5, -2, -1, 0, 1, 2, 5,
- GMP_NUMB_BITS-1, GMP_NUMB_BITS, GMP_NUMB_BITS+1,
- 2*GMP_NUMB_BITS-1, 2*GMP_NUMB_BITS, 2*GMP_NUMB_BITS+1,
- 3*GMP_NUMB_BITS-1, 3*GMP_NUMB_BITS, 3*GMP_NUMB_BITS+1,
- };
-
- int i, neg;
- long exp, l;
- mpq_t q;
- double got, want;
-
- mpq_init (q);
-
- for (i = 0; i < numberof (data); i++)
- {
- exp = data[i];
-
- mpq_set_ui (q, 1L, 1L);
- if (exp >= 0)
- mpq_mul_2exp (q, q, exp);
- else
- mpq_div_2exp (q, q, -exp);
-
- want = 1.0;
- for (l = 0; l < exp; l++)
- want *= 2.0;
- for (l = 0; l > exp; l--)
- want /= 2.0;
-
- for (neg = 0; neg <= 1; neg++)
- {
- if (neg)
- {
- mpq_neg (q, q);
- want = -want;
- }
-
- got = mpq_get_d (q);
-
- if (got != want)
- {
- printf ("mpq_get_d wrong on %s2**%ld\n", neg ? "-" : "", exp);
- mpq_trace (" q ", q);
- d_trace (" want ", want);
- d_trace (" got ", got);
- abort();
- }
- }
- }
- mpq_clear (q);
-}
-
-int
-main (int argc, char **argv)
-{
- tests_start ();
-
- check_onebit ();
- check_monotonic (argc, argv);
- check_random (argc, argv);
-
- tests_end ();
- exit (0);
-}
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