| /* 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; |
| } |