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Unified Diff: gcc/mpfr/tests/tfactorial.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/tfactorial.c
diff --git a/gcc/mpfr/tests/tfactorial.c b/gcc/mpfr/tests/tfactorial.c
deleted file mode 100644
index f7a38c713d8057b0dcc94509416ee6ba282d18d0..0000000000000000000000000000000000000000
--- a/gcc/mpfr/tests/tfactorial.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/* Test file for mpfr_factorial.
-
-Copyright 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 "mpfr-test.h"
-
-#define TEST_FUNCTION mpfr_fac_ui
-
-static void
-special (void)
-{
- mpfr_t x, y;
- int inex;
-
- mpfr_init (x);
- mpfr_init (y);
-
- mpfr_set_prec (x, 21);
- mpfr_set_prec (y, 21);
- mpfr_fac_ui (x, 119, GMP_RNDZ);
- mpfr_set_str_binary (y, "0.101111101110100110110E654");
- if (mpfr_cmp (x, y))
- {
- printf ("Error in mpfr_fac_ui (119)\n");
- exit (1);
- }
-
- mpfr_set_prec (y, 206);
- inex = mpfr_fac_ui (y, 767, GMP_RNDN);
- mpfr_set_prec (x, 206);
- mpfr_set_str_binary (x, "0.110111100001000001101010010001000111000100000100111000010011100011011111001100011110101000111101101100110001001100110100001001111110000101010000100100011100010011101110000001000010001100010000101001111E6250");
- if (mpfr_cmp (x, y))
- {
- printf ("Error in mpfr_fac_ui (767)\n");
- exit (1);
- }
- if (inex <= 0)
- {
- printf ("Wrong flag for mpfr_fac_ui (767)\n");
- exit (1);
- }
-
- mpfr_set_prec (y, 202);
- mpfr_fac_ui (y, 69, GMP_RNDU);
-
- mpfr_clear (x);
- mpfr_clear (y);
-}
-
-static void
-test_int (void)
-{
- unsigned long n0 = 1, n1 = 80, n;
- mpz_t f;
- mpfr_t x, y;
- mp_prec_t prec_f, p;
- int r;
- int inex1, inex2;
-
- mpz_init (f);
- mpfr_init (x);
- mpfr_init (y);
-
- mpz_fac_ui (f, n0 - 1);
- for (n = n0; n <= n1; n++)
- {
- mpz_mul_ui (f, f, n); /* f = n! */
- prec_f = mpz_sizeinbase (f, 2) - mpz_scan1 (f, 0);
- for (p = MPFR_PREC_MIN; p <= prec_f; p++)
- {
- mpfr_set_prec (x, p);
- mpfr_set_prec (y, p);
- for (r = 0; r < GMP_RND_MAX; r++)
- {
- inex1 = mpfr_fac_ui (x, n, (mp_rnd_t) r);
- inex2 = mpfr_set_z (y, f, (mp_rnd_t) r);
- if (mpfr_cmp (x, y))
- {
- printf ("Error for n=%lu prec=%lu rnd=%s\n",
- n, (unsigned long) p, mpfr_print_rnd_mode ((mp_rnd_t) r));
- exit (1);
- }
- if ((inex1 < 0 && inex2 >= 0) || (inex1 == 0 && inex2 != 0)
- || (inex1 > 0 && inex2 <= 0))
- {
- printf ("Wrong inexact flag for n=%lu prec=%lu rnd=%s\n",
- n, (unsigned long) p, mpfr_print_rnd_mode ((mp_rnd_t) r));
- exit (1);
- }
- }
- }
- }
-
- mpz_clear (f);
- mpfr_clear (x);
- mpfr_clear (y);
-}
-
-static void
-overflowed_fac0 (void)
-{
- mpfr_t x, y;
- int inex, rnd, err = 0;
- mp_exp_t old_emax;
-
- old_emax = mpfr_get_emax ();
-
- mpfr_init2 (x, 8);
- mpfr_init2 (y, 8);
-
- mpfr_set_ui (y, 1, GMP_RNDN);
- mpfr_nextbelow (y);
- set_emax (0); /* 1 is not representable. */
- RND_LOOP (rnd)
- {
- mpfr_clear_flags ();
- inex = mpfr_fac_ui (x, 0, (mp_rnd_t) rnd);
- if (! mpfr_overflow_p ())
- {
- printf ("Error in overflowed_fac0 (rnd = %s):\n"
- " The overflow flag is not set.\n",
- mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- err = 1;
- }
- if (rnd == GMP_RNDZ || rnd == GMP_RNDD)
- {
- if (inex >= 0)
- {
- printf ("Error in overflowed_fac0 (rnd = %s):\n"
- " The inexact value must be negative.\n",
- mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- err = 1;
- }
- if (! mpfr_equal_p (x, y))
- {
- printf ("Error in overflowed_fac0 (rnd = %s):\n"
- " Got ", mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- mpfr_print_binary (x);
- printf (" instead of 0.11111111E0.\n");
- err = 1;
- }
- }
- else
- {
- if (inex <= 0)
- {
- printf ("Error in overflowed_fac0 (rnd = %s):\n"
- " The inexact value must be positive.\n",
- mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- err = 1;
- }
- if (! (mpfr_inf_p (x) && MPFR_SIGN (x) > 0))
- {
- printf ("Error in overflowed_fac0 (rnd = %s):\n"
- " Got ", mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- mpfr_print_binary (x);
- printf (" instead of +Inf.\n");
- err = 1;
- }
- }
- }
- set_emax (old_emax);
-
- if (err)
- exit (1);
- mpfr_clear (x);
- mpfr_clear (y);
-}
-
-int
-main (int argc, char *argv[])
-{
- unsigned int prec, err, yprec, n, k, zeros;
- int rnd;
- mpfr_t x, y, z, t;
- int inexact;
-
- tests_start_mpfr ();
-
- special ();
-
- test_int ();
-
- mpfr_init (x);
- mpfr_init (y);
- mpfr_init (z);
- mpfr_init (t);
-
- mpfr_fac_ui (y, 0, GMP_RNDN);
-
- if (mpfr_cmp_ui (y, 1))
- {
- printf ("mpfr_fac_ui(0) does not give 1\n");
- exit (1);
- }
-
- for (prec = 2; prec <= 100; prec++)
- {
- mpfr_set_prec (x, prec);
- mpfr_set_prec (z, prec);
- mpfr_set_prec (t, prec);
- yprec = prec + 10;
- mpfr_set_prec (y, yprec);
-
- for (n = 0; n < 50; n++)
- for (rnd = 0; rnd < GMP_RND_MAX; rnd++)
- {
- inexact = mpfr_fac_ui (y, n, (mp_rnd_t) rnd);
- err = (rnd == GMP_RNDN) ? yprec + 1 : yprec;
- if (mpfr_can_round (y, err, (mp_rnd_t) rnd, (mp_rnd_t) rnd, prec))
- {
- mpfr_set (t, y, (mp_rnd_t) rnd);
- inexact = mpfr_fac_ui (z, n, (mp_rnd_t) rnd);
- /* fact(n) ends with floor(n/2)+floor(n/4)+... zeros */
- for (k=n/2, zeros=0; k; k >>= 1)
- zeros += k;
- if (MPFR_EXP(y) <= (mp_exp_t) (prec + zeros))
- /* result should be exact */
- {
- if (inexact)
- {
- printf ("Wrong inexact flag: expected exact\n");
- exit (1);
- }
- }
- else /* result is inexact */
- {
- if (!inexact)
- {
- printf ("Wrong inexact flag: expected inexact\n");
- printf ("n=%u prec=%u\n", n, prec);
- mpfr_print_binary(z); puts ("");
- exit (1);
- }
- }
- if (mpfr_cmp (t, z))
- {
- printf ("results differ for x=");
- mpfr_out_str (stdout, 2, prec, x, GMP_RNDN);
- printf (" prec=%u rnd_mode=%s\n", prec,
- mpfr_print_rnd_mode ((mp_rnd_t) rnd));
- printf (" got ");
- mpfr_out_str (stdout, 2, prec, z, GMP_RNDN);
- puts ("");
- printf (" expected ");
- mpfr_out_str (stdout, 2, prec, t, GMP_RNDN);
- puts ("");
- printf (" approximation was ");
- mpfr_print_binary (y);
- puts ("");
- exit (1);
- }
- }
- }
- }
-
- mpfr_clear (x);
- mpfr_clear (y);
- mpfr_clear (z);
- mpfr_clear (t);
-
- overflowed_fac0 ();
-
- tests_end_mpfr ();
- return 0;
-}
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