--- /dev/null
+/* Test file for mpfr_cbrt.
+
+Copyright 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"
+
+static void
+special (void)
+{
+ mpfr_t x, y;
+
+ mpfr_init (x);
+ mpfr_init (y);
+
+ /* cbrt(NaN) = NaN */
+ mpfr_set_nan (x);
+ mpfr_cbrt (y, x, GMP_RNDN);
+ if (!mpfr_nan_p (y))
+ {
+ printf ("Error: cbrt(NaN) <> NaN\n");
+ exit (1);
+ }
+
+ /* cbrt(+Inf) = +Inf */
+ mpfr_set_inf (x, 1);
+ mpfr_cbrt (y, x, GMP_RNDN);
+ if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
+ {
+ printf ("Error: cbrt(+Inf) <> +Inf\n");
+ exit (1);
+ }
+
+ /* cbrt(-Inf) = -Inf */
+ mpfr_set_inf (x, -1);
+ mpfr_cbrt (y, x, GMP_RNDN);
+ if (!mpfr_inf_p (y) || mpfr_sgn (y) > 0)
+ {
+ printf ("Error: cbrt(-Inf) <> -Inf\n");
+ exit (1);
+ }
+
+ /* cbrt(+/-0) = +/-0 */
+ mpfr_set_ui (x, 0, GMP_RNDN);
+ mpfr_cbrt (y, x, GMP_RNDN);
+ if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) < 0)
+ {
+ printf ("Error: cbrt(+0) <> +0\n");
+ exit (1);
+ }
+ mpfr_neg (x, x, GMP_RNDN);
+ mpfr_cbrt (y, x, GMP_RNDN);
+ if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) > 0)
+ {
+ printf ("Error: cbrt(-0) <> -0\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 53);
+ mpfr_set_str (x, "8.39005285514734966412e-01", 10, GMP_RNDN);
+ mpfr_cbrt (x, x, GMP_RNDN);
+ if (mpfr_cmp_str1 (x, "9.43166207799662426048e-01"))
+ {
+ printf ("Error in crbrt (1)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 32);
+ mpfr_set_prec (y, 32);
+ mpfr_set_str_binary (x, "0.10000100001100101001001001011001");
+ mpfr_cbrt (x, x, GMP_RNDN);
+ mpfr_set_str_binary (y, "0.11001101011000100111000111111001");
+ if (mpfr_cmp (x, y))
+ {
+ printf ("Error in cbrt (2)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 32);
+ mpfr_set_prec (y, 32);
+ mpfr_set_str_binary (x, "-0.1100001110110000010101011001011");
+ mpfr_cbrt (x, x, GMP_RNDD);
+ mpfr_set_str_binary (y, "-0.11101010000100100101000101011001");
+ if (mpfr_cmp (x, y))
+ {
+ printf ("Error in cbrt (3)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 82);
+ mpfr_set_prec (y, 27);
+ mpfr_set_str_binary (x, "0.1010001111011101011011000111001011001101100011110110010011011011011010011001100101e-7");
+ mpfr_cbrt (y, x, GMP_RNDD);
+ mpfr_set_str_binary (x, "0.101011110001110001000100011E-2");
+ if (mpfr_cmp (x, y))
+ {
+ printf ("Error in cbrt (4)\n");
+ exit (1);
+ }
+
+ mpfr_set_prec (x, 204);
+ mpfr_set_prec (y, 38);
+ mpfr_set_str_binary (x, "0.101000000001101000000001100111111011111001110110100001111000100110100111001101100111110001110001011011010110010011100101111001111100001010010100111011101100000011011000101100010000000011000101001010001001E-5");
+ mpfr_cbrt (y, x, GMP_RNDD);
+ mpfr_set_str_binary (x, "0.10001001111010011011101000010110110010E-1");
+ if (mpfr_cmp (x, y))
+ {
+ printf ("Error in cbrt (5)\n");
+ exit (1);
+ }
+
+ /* Bug (in the compiler?) found on Linux/m68k with gcc 4.0.2 */
+ mpfr_set_prec (x, 5);
+ mpfr_set_prec (y, 5);
+ mpfr_set_str_binary (x, "1.1000E-2");
+ mpfr_cbrt (y, x, GMP_RNDN);
+ mpfr_set_str_binary (x, "1.0111E-1");
+ if (mpfr_cmp (x, y))
+ {
+ printf ("Error in cbrt (6)\n");
+ exit (1);
+ }
+
+ mpfr_clear (x);
+ mpfr_clear (y);
+}
+
+#define TEST_FUNCTION mpfr_cbrt
+#include "tgeneric.c"
+
+int
+main (void)
+{
+ mpfr_t x;
+ int r;
+ mp_prec_t p;
+
+ tests_start_mpfr ();
+
+ special ();
+
+ mpfr_init (x);
+
+ for (p=2; p<100; p++)
+ {
+ mpfr_set_prec (x, p);
+ for (r = 0; r < GMP_RND_MAX; r++)
+ {
+ mpfr_set_ui (x, 1, GMP_RNDN);
+ mpfr_cbrt (x, x, (mp_rnd_t) r);
+ if (mpfr_cmp_ui (x, 1))
+ {
+ printf ("Error in mpfr_cbrt for x=1, rnd=%s\ngot ",
+ mpfr_print_rnd_mode ((mp_rnd_t) r));
+ mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+ mpfr_set_si (x, -1, GMP_RNDN);
+ mpfr_cbrt (x, x, (mp_rnd_t) r);
+ if (mpfr_cmp_si (x, -1))
+ {
+ printf ("Error in mpfr_cbrt for x=-1, rnd=%s\ngot ",
+ mpfr_print_rnd_mode ((mp_rnd_t) r));
+ mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
+ printf ("\n");
+ exit (1);
+ }
+
+ if (p >= 5)
+ {
+ int i;
+ for (i = -12; i <= 12; i++)
+ {
+ mpfr_set_ui (x, 27, GMP_RNDN);
+ mpfr_mul_2si (x, x, 3*i, GMP_RNDN);
+ mpfr_cbrt (x, x, GMP_RNDN);
+ if (mpfr_cmp_si_2exp (x, 3, i))
+ {
+ printf ("Error in mpfr_cbrt for "
+ "x = 27.0 * 2^(%d), rnd=%s\ngot ",
+ 3*i, mpfr_print_rnd_mode ((mp_rnd_t) r));
+ mpfr_out_str (stdout, 2, 0, x, GMP_RNDN);
+ printf ("\ninstead of 3 * 2^(%d)\n", i);
+ exit (1);
+ }
+ }
+ }
+ }
+ }
+ mpfr_clear (x);
+
+ test_generic (2, 200, 10);
+
+ data_check ("data/cbrt", mpfr_cbrt, "mpfr_cbrt");
+
+ tests_end_mpfr ();
+ return 0;
+}
projects / msp430-gcc.git / blobdiff