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https://review.haiku-os.org/buildtools
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327 lines
8.7 KiB
C
327 lines
8.7 KiB
C
/* Test file for mpfr_hypot.
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Copyright 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 <limits.h>
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#include <stdlib.h>
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#include "mpfr-test.h"
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/* Non-zero when extended exponent range */
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static int ext = 0;
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static void
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special (void)
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{
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mpfr_t x, y, z;
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mpfr_init (x);
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mpfr_init (y);
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mpfr_init (z);
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mpfr_set_nan (x);
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mpfr_hypot (z, x, y, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_nan_p (z));
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mpfr_set_inf (x, 1);
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mpfr_set_inf (y, -1);
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mpfr_hypot (z, x, y, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_inf_p (z) && mpfr_sgn (z) > 0);
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mpfr_set_inf (x, -1);
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mpfr_set_nan (y);
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mpfr_hypot (z, x, y, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_inf_p (z) && mpfr_sgn (z) > 0);
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mpfr_set_nan (x);
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mpfr_set_inf (y, -1);
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mpfr_hypot (z, x, y, MPFR_RNDN);
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MPFR_ASSERTN(mpfr_inf_p (z) && mpfr_sgn (z) > 0);
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mpfr_clear (x);
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mpfr_clear (y);
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mpfr_clear (z);
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}
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static void
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test_large (void)
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{
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mpfr_t x, y, z, t;
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mpfr_init (x);
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mpfr_init (y);
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mpfr_init (z);
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mpfr_init (t);
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mpfr_set_ui (x, 21, MPFR_RNDN);
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mpfr_set_ui (y, 28, MPFR_RNDN);
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mpfr_set_ui (z, 35, MPFR_RNDN);
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mpfr_mul_2ui (x, x, MPFR_EMAX_DEFAULT-6, MPFR_RNDN);
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mpfr_mul_2ui (y, y, MPFR_EMAX_DEFAULT-6, MPFR_RNDN);
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mpfr_mul_2ui (z, z, MPFR_EMAX_DEFAULT-6, MPFR_RNDN);
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mpfr_hypot (t, x, y, MPFR_RNDN);
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if (mpfr_cmp (z, t))
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{
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printf ("Error in test_large: got\n");
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mpfr_out_str (stdout, 2, 0, t, MPFR_RNDN);
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printf ("\ninstead of\n");
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mpfr_out_str (stdout, 2, 0, z, MPFR_RNDN);
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printf ("\n");
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exit (1);
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}
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mpfr_set_prec (x, 53);
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mpfr_set_prec (t, 53);
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mpfr_set_prec (y, 53);
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mpfr_set_str_binary (x, "0.11101100011110000011101000010101010011001101000001100E-1021");
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mpfr_set_str_binary (y, "0.11111001010011000001110110001101011100001000010010100E-1021");
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mpfr_hypot (t, x, y, MPFR_RNDN);
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mpfr_set_str_binary (z, "0.101010111100110111101110111110100110010011001010111E-1020");
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if (mpfr_cmp (z, t))
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{
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printf ("Error in test_large: got\n");
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mpfr_out_str (stdout, 2, 0, t, MPFR_RNDN);
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printf ("\ninstead of\n");
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mpfr_out_str (stdout, 2, 0, z, MPFR_RNDN);
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printf ("\n");
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exit (1);
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}
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mpfr_set_prec (x, 240);
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mpfr_set_prec (y, 22);
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mpfr_set_prec (z, 2);
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mpfr_set_prec (t, 2);
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mpfr_set_str_binary (x, "0.100111011010010010110100000100000001100010011100110101101111111101011110111011011101010110100101111000111100010100110000100101011110111011100110100110100101110101101100011000001100000001111101110100100100011011011010110111100110010101000111e-7");
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mpfr_set_str_binary (y, "0.1111000010000011000111E-10");
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mpfr_hypot (t, x, y, MPFR_RNDN);
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mpfr_set_str_binary (z, "0.11E-7");
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if (mpfr_cmp (z, t))
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{
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printf ("Error in test_large: got\n");
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mpfr_out_str (stdout, 2, 0, t, MPFR_RNDN);
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printf ("\ninstead of\n");
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mpfr_out_str (stdout, 2, 0, z, MPFR_RNDN);
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printf ("\n");
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exit (1);
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}
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mpfr_clear (x);
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mpfr_clear (y);
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mpfr_clear (z);
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mpfr_clear (t);
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}
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static void
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test_small (void)
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{
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mpfr_t x, y, z1, z2;
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int inex1, inex2;
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unsigned int flags;
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/* Test hypot(x,x) with x = 2^(emin-1). Result is x * sqrt(2). */
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mpfr_inits2 (8, x, y, z1, z2, (mpfr_ptr) 0);
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mpfr_set_si_2exp (x, 1, mpfr_get_emin () - 1, MPFR_RNDN);
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mpfr_set_si_2exp (y, 1, mpfr_get_emin () - 1, MPFR_RNDN);
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mpfr_set_ui (z1, 2, MPFR_RNDN);
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inex1 = mpfr_sqrt (z1, z1, MPFR_RNDN);
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inex2 = mpfr_mul (z1, z1, x, MPFR_RNDN);
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MPFR_ASSERTN (inex2 == 0);
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mpfr_clear_flags ();
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inex2 = mpfr_hypot (z2, x, y, MPFR_RNDN);
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flags = __gmpfr_flags;
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if (mpfr_cmp (z1, z2) != 0)
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{
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printf ("Error in test_small%s\nExpected ",
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ext ? ", extended exponent range" : "");
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mpfr_out_str (stdout, 2, 0, z1, MPFR_RNDN);
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printf ("\nGot ");
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mpfr_out_str (stdout, 2, 0, z2, MPFR_RNDN);
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printf ("\n");
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exit (1);
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}
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if (! SAME_SIGN (inex1, inex2))
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{
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printf ("Bad ternary value in test_small%s\nExpected %d, got %d\n",
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ext ? ", extended exponent range" : "", inex1, inex2);
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exit (1);
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}
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if (flags != MPFR_FLAGS_INEXACT)
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{
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printf ("Bad flags in test_small%s\nExpected %u, got %u\n",
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ext ? ", extended exponent range" : "",
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(unsigned int) MPFR_FLAGS_INEXACT, flags);
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exit (1);
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}
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mpfr_clears (x, y, z1, z2, (mpfr_ptr) 0);
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}
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static void
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test_large_small (void)
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{
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mpfr_t x, y, z;
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int inexact, inex2, r;
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mpfr_init2 (x, 3);
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mpfr_init2 (y, 2);
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mpfr_init2 (z, 2);
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mpfr_set_ui_2exp (x, 1, mpfr_get_emax () / 2, MPFR_RNDN);
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mpfr_set_ui_2exp (y, 1, -1, MPFR_RNDN);
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inexact = mpfr_hypot (z, x, y, MPFR_RNDN);
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if (inexact >= 0 || mpfr_cmp (x, z))
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{
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printf ("Error 1 in test_large_small%s\n",
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ext ? ", extended exponent range" : "");
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exit (1);
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}
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mpfr_mul_ui (x, x, 5, MPFR_RNDN);
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inexact = mpfr_hypot (z, x, y, MPFR_RNDN);
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if (mpfr_cmp (x, z) >= 0)
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{
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printf ("Error 2 in test_large_small%s\n",
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ext ? ", extended exponent range" : "");
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printf ("x = ");
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mpfr_out_str (stdout, 2, 0, x, MPFR_RNDN);
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printf ("\n");
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printf ("y = ");
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mpfr_out_str (stdout, 2, 0, y, MPFR_RNDN);
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printf ("\n");
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printf ("z = ");
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mpfr_out_str (stdout, 2, 0, z, MPFR_RNDN);
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printf (" (in precision 2) instead of\n ");
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mpfr_out_str (stdout, 2, 2, x, MPFR_RNDU);
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printf ("\n");
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exit (1);
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}
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RND_LOOP(r)
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{
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mpfr_set_ui_2exp (x, 1, mpfr_get_emax () - 1, MPFR_RNDN);
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mpfr_set_ui_2exp (y, 1, mpfr_get_emin (), MPFR_RNDN);
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inexact = mpfr_hypot (z, x, y, (mpfr_rnd_t) r);
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inex2 = mpfr_add_ui (y, x, 1, (mpfr_rnd_t) r);
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if (! mpfr_equal_p (y, z) || ! SAME_SIGN (inexact, inex2))
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{
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printf ("Error 3 in test_large_small, %s%s\n",
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mpfr_print_rnd_mode ((mpfr_rnd_t) r),
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ext ? ", extended exponent range" : "");
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printf ("Expected ");
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mpfr_out_str (stdout, 2, 0, y, MPFR_RNDN);
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printf (", inex = %d\n", inex2);
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printf ("Got ");
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mpfr_out_str (stdout, 2, 0, y, MPFR_RNDN);
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printf (", inex = %d\n", inexact);
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exit (1);
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}
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}
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mpfr_clear (x);
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mpfr_clear (y);
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mpfr_clear (z);
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}
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static void
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check_overflow (void)
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{
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mpfr_t x, y;
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int inex, r;
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mpfr_inits2 (8, x, y, (mpfr_ptr) 0);
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mpfr_set_ui (x, 1, MPFR_RNDN);
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mpfr_setmax (x, mpfr_get_emax ());
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RND_LOOP(r)
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{
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mpfr_clear_overflow ();
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inex = mpfr_hypot (y, x, x, (mpfr_rnd_t) r);
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if (!mpfr_overflow_p ())
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{
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printf ("No overflow in check_overflow for %s%s\n",
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mpfr_print_rnd_mode ((mpfr_rnd_t) r),
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ext ? ", extended exponent range" : "");
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exit (1);
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}
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MPFR_ASSERTN (MPFR_IS_POS (y));
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if (r == MPFR_RNDZ || r == MPFR_RNDD)
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{
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MPFR_ASSERTN (inex < 0);
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MPFR_ASSERTN (!mpfr_inf_p (y));
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mpfr_nexttoinf (y);
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}
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else
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{
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MPFR_ASSERTN (inex > 0);
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}
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MPFR_ASSERTN (mpfr_inf_p (y));
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}
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mpfr_clears (x, y, (mpfr_ptr) 0);
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}
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#define TWO_ARGS
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#define TEST_FUNCTION mpfr_hypot
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#include "tgeneric.c"
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static void
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alltst (void)
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{
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mpfr_exp_t emin, emax;
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ext = 0;
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test_small ();
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test_large_small ();
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check_overflow ();
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emin = mpfr_get_emin ();
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emax = mpfr_get_emax ();
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set_emin (MPFR_EMIN_MIN);
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set_emax (MPFR_EMAX_MAX);
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if (mpfr_get_emin () != emin || mpfr_get_emax () != emax)
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{
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ext = 1;
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test_small ();
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test_large_small ();
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check_overflow ();
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set_emin (emin);
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set_emax (emax);
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}
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}
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int
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main (int argc, char *argv[])
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{
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tests_start_mpfr ();
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special ();
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test_large ();
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alltst ();
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test_generic (2, 100, 10);
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tests_end_mpfr ();
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return 0;
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}
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