--- /dev/null
+/* Test file for mpfr_agm.
+
+Copyright 1999, 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 check(a,b,r) check4(a,b,r,0.0)
+
+static void
+check4 (const char *as, const char *bs, mp_rnd_t rnd_mode, const char *res)
+{
+ mpfr_t ta, tb, tres;
+
+ mpfr_inits2 (53, ta, tb, tres, (mpfr_ptr) 0);
+
+ mpfr_set_str1 (ta, as);
+ mpfr_set_str1 (tb, bs);
+
+ mpfr_agm(tres, ta, tb, rnd_mode);
+
+ if (mpfr_cmp_str1 (tres, res))
+ {
+ printf ("mpfr_agm failed for a=%s, b=%s, rnd_mode=%d\n",as,bs,rnd_mode);
+ printf ("expected result is %s, got ",res);
+ mpfr_out_str(stdout, 10, 0, tres, GMP_RNDN);
+ putchar('\n');
+ exit (1);
+ }
+ mpfr_clears (ta, tb, tres, (mpfr_ptr) 0);
+}
+
+static void
+check_large (void)
+{
+ mpfr_t a, b, agm;
+ int inex;
+
+ mpfr_init2 (a, 82);
+ mpfr_init2 (b, 82);
+ mpfr_init2 (agm, 82);
+
+ mpfr_set_ui (a, 1, GMP_RNDN);
+ mpfr_set_str_binary (b, "0.1111101100001000000001011000110111101000001011111000100001000101010100011111110010E-39");
+ mpfr_agm (agm, a, b, GMP_RNDN);
+ mpfr_set_str_binary (a, "0.1110001000111101101010101010101101001010001001001011100101111011110101111001111100E-4");
+ if (mpfr_cmp (agm, a))
+ {
+ printf ("mpfr_agm failed for precision 82\n");
+ exit (1);
+ }
+
+ /* problem found by Damien Fischer <damien@maths.usyd.edu.au> 4 Aug 2003:
+ produced a division by zero exception */
+ mpfr_set_prec (a, 268);
+ mpfr_set_prec (b, 268);
+ mpfr_set_prec (agm, 268);
+ mpfr_set_str (a, "703.93543315330225238487276503953366664991725089988315253092140138947103394917006", 10, GMP_RNDN);
+ mpfr_set_str (b, "703.93543315330225238487279020523738740563816490895994499256063816906728642622316", 10, GMP_RNDN);
+ mpfr_agm (agm, a, b, GMP_RNDN);
+
+ mpfr_set_prec (a, 18);
+ mpfr_set_prec (b, 70);
+ mpfr_set_prec (agm, 67);
+ mpfr_set_str_binary (a, "0.111001111100101000e8");
+ mpfr_set_str_binary (b, "0.1101110111100100010100110000010111011011011100110100111001010100100001e10");
+ inex = mpfr_agm (agm, a, b, GMP_RNDN);
+ mpfr_set_str_binary (b, "0.1111110010011101101100010101011011010010010000001010100011000110011e9");
+ if (mpfr_cmp (agm, b))
+ {
+ printf ("Error in mpfr_agm (1)\n");
+ exit (1);
+ }
+ if (inex >= 0)
+ {
+ printf ("Wrong flag for mpfr_agm (1)\n");
+ exit (1);
+ }
+
+ /* test worst case: 9 consecutive ones after the last bit */
+ mpfr_set_prec (a, 2);
+ mpfr_set_prec (b, 2);
+ mpfr_set_ui (a, 1, GMP_RNDN);
+ mpfr_set_ui (b, 2, GMP_RNDN);
+ mpfr_set_prec (agm, 904);
+ mpfr_agm (agm, a, b, GMP_RNDZ);
+
+ mpfr_clear (a);
+ mpfr_clear (b);
+ mpfr_clear (agm);
+}
+
+static void
+check_nans (void)
+{
+ mpfr_t x, y, m;
+
+ mpfr_init2 (x, 123L);
+ mpfr_init2 (y, 123L);
+ mpfr_init2 (m, 123L);
+
+ /* agm(1,nan) == nan */
+ mpfr_set_ui (x, 1L, GMP_RNDN);
+ mpfr_set_nan (y);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_nan_p (m));
+
+ /* agm(1,+inf) == +inf */
+ mpfr_set_ui (x, 1L, GMP_RNDN);
+ mpfr_set_inf (y, 1);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_inf_p (m));
+ MPFR_ASSERTN (mpfr_sgn (m) > 0);
+
+ /* agm(+inf,+inf) == +inf */
+ mpfr_set_inf (x, 1);
+ mpfr_set_inf (y, 1);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_inf_p (m));
+ MPFR_ASSERTN (mpfr_sgn (m) > 0);
+
+ /* agm(-inf,+inf) == nan */
+ mpfr_set_inf (x, -1);
+ mpfr_set_inf (y, 1);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_nan_p (m));
+
+ /* agm(+0,+inf) == nan */
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_set_inf (y, 1);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_nan_p (m));
+
+ /* agm(+0,1) == +0 */
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_set_ui (y, 1, GMP_RNDN);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (MPFR_IS_ZERO (m) && MPFR_IS_POS(m));
+
+ /* agm(-0,1) == +0 */
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_neg (x, x, GMP_RNDN);
+ mpfr_set_ui (y, 1, GMP_RNDN);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (MPFR_IS_ZERO (m) && MPFR_IS_POS(m));
+
+ /* agm(-0,+0) == +0 */
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_neg (x, x, GMP_RNDN);
+ mpfr_set_ui (y, 0, GMP_RNDN);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (MPFR_IS_ZERO (m) && MPFR_IS_POS(m));
+
+ /* agm(1,1) == 1 */
+ mpfr_set_ui (x, 1, GMP_RNDN);
+ mpfr_set_ui (y, 1, GMP_RNDN);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_cmp_ui (m ,1) == 0);
+
+ /* agm(-1,-2) == NaN */
+ mpfr_set_si (x, -1, GMP_RNDN);
+ mpfr_set_si (y, -2, GMP_RNDN);
+ mpfr_agm (m, x, y, GMP_RNDN);
+ MPFR_ASSERTN (mpfr_nan_p (m));
+
+ mpfr_clear (x);
+ mpfr_clear (y);
+ mpfr_clear (m);
+}
+
+#define TEST_FUNCTION mpfr_agm
+#define TWO_ARGS
+#define TEST_RANDOM_POS 4
+#define TEST_RANDOM_POS2 4
+#include "tgeneric.c"
+
+int
+main (int argc, char* argv[])
+{
+ tests_start_mpfr ();
+
+ check_nans ();
+
+ check_large ();
+ check4 ("2.0", "1.0", GMP_RNDN, "1.45679103104690677029");
+ check4 ("6.0", "4.0", GMP_RNDN, "4.94936087247260925182");
+ check4 ("62.0", "61.0", GMP_RNDN, "6.14989837188450749750e+01");
+ check4 ("0.5", "1.0", GMP_RNDN, "7.28395515523453385143e-01");
+ check4 ("1.0", "2.0", GMP_RNDN, "1.45679103104690677029");
+ check4 ("234375765.0", "234375000.0", GMP_RNDN, "2.3437538249984395504e8");
+ check4 ("8.0", "1.0", GMP_RNDU, "3.615756177597362786");
+ check4 ("1.0", "44.0", GMP_RNDU, "1.33658354512981247808e1");
+ check4 ("1.0", "3.7252902984619140625e-9", GMP_RNDU,
+ "7.55393356971199025907e-02");
+ test_generic (2, 300, 17);
+
+ tests_end_mpfr ();
+ return 0;
+}
projects / msp430-gcc.git / blobdiff