X-Git-Url: https://oss.titaniummirror.com/gitweb?a=blobdiff_plain;f=mpfr%2Ftests%2Ftasin.c;fp=mpfr%2Ftests%2Ftasin.c;h=64fa08837edb0f99939d3e5d1f4cb8b75d985275;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=0000000000000000000000000000000000000000;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/mpfr/tests/tasin.c b/mpfr/tests/tasin.c new file mode 100644 index 00000000..64fa0883 --- /dev/null +++ b/mpfr/tests/tasin.c @@ -0,0 +1,241 @@ +/* Test file for mpfr_asin. + +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 +#include + +#include "mpfr-test.h" + +#define TEST_FUNCTION mpfr_asin +#define TEST_RANDOM_EMAX 7 +#include "tgeneric.c" + +static void +special (void) +{ + mpfr_t x, y; + int r; + + mpfr_init (x); + mpfr_init (y); + + /* asin(NaN) = NaN */ + mpfr_set_nan (x); + mpfr_asin (y, x, GMP_RNDN); + if (!mpfr_nan_p (y)) + { + printf ("Error: mpfr_asin (NaN) <> NaN\n"); + exit (1); + } + + /* asin(+/-Inf) = NaN */ + mpfr_set_inf (x, 1); + mpfr_asin (y, x, GMP_RNDN); + if (!mpfr_nan_p (y)) + { + printf ("Error: mpfr_asin (+Inf) <> NaN\n"); + exit (1); + } + mpfr_set_inf (x, -1); + mpfr_asin (y, x, GMP_RNDN); + if (!mpfr_nan_p (y)) + { + printf ("Error: mpfr_asin (-Inf) <> NaN\n"); + exit (1); + } + + /* asin(+/-2) = NaN */ + mpfr_set_ui (x, 2, GMP_RNDN); + mpfr_asin (y, x, GMP_RNDN); + if (!mpfr_nan_p (y)) + { + printf ("Error: mpfr_asin (+2) <> NaN\n"); + exit (1); + } + mpfr_set_si (x, -2, GMP_RNDN); + mpfr_asin (y, x, GMP_RNDN); + if (!mpfr_nan_p (y)) + { + printf ("Error: mpfr_asin (-2) <> NaN\n"); + exit (1); + } + + /* asin(+/-0) = +/-0 */ + mpfr_set_ui (x, 0, GMP_RNDN); + mpfr_asin (y, x, GMP_RNDN); + if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) < 0) + { + printf ("Error: mpfr_asin (+0) <> +0\n"); + exit (1); + } + mpfr_neg (x, x, GMP_RNDN); + mpfr_asin (y, x, GMP_RNDN); + if (mpfr_cmp_ui (y, 0) || mpfr_sgn (y) > 0) + { + printf ("Error: mpfr_asin (-0) <> -0\n"); + exit (1); + } + + /* asin(1) = Pi/2 */ + for (r = 0; r < GMP_RND_MAX; r++) + { + mpfr_set_ui (x, 1, GMP_RNDN); /* exact */ + mpfr_asin (y, x, (mp_rnd_t) r); + mpfr_const_pi (x, (mp_rnd_t) r); + mpfr_div_2exp (x, x, 1, GMP_RNDN); /* exact */ + if (mpfr_cmp (x, y)) + { + printf ("Error: asin(1) != Pi/2 for rnd=%s\n", + mpfr_print_rnd_mode ((mp_rnd_t) r)); + exit (1); + } + } + + /* asin(-1) = -Pi/2 */ + for (r = 0; r < GMP_RND_MAX; r++) + { + mpfr_set_si (x, -1, GMP_RNDN); /* exact */ + mpfr_asin (y, x, (mp_rnd_t) r); + mpfr_const_pi (x, MPFR_INVERT_RND((mp_rnd_t) r)); + mpfr_neg (x, x, GMP_RNDN); /* exact */ + mpfr_div_2exp (x, x, 1, GMP_RNDN); /* exact */ + if (mpfr_cmp (x, y)) + { + printf ("Error: asin(-1) != -Pi/2 for rnd=%s\n", + mpfr_print_rnd_mode ((mp_rnd_t) r)); + exit (1); + } + } + + mpfr_set_prec (x, 32); + mpfr_set_prec (y, 32); + + mpfr_set_str_binary (x, "0.1101110111111111001011101000101"); + mpfr_asin (x, x, GMP_RNDN); + mpfr_set_str_binary (y, "1.00001100101011000001111100111"); + if (mpfr_cmp (x, y)) + { + printf ("Error: mpfr_asin (1)\n"); + exit (1); + } + + mpfr_set_str_binary (x, "-0.01110111000011101010111100000101"); + mpfr_asin (x, x, GMP_RNDN); + mpfr_set_str_binary (y, "-0.0111101111010100011111110101"); + if (mpfr_cmp (x, y)) + { + printf ("Error: mpfr_asin (2)\n"); + mpfr_print_binary (x); printf ("\n"); + mpfr_print_binary (y); printf ("\n"); + exit (1); + } + + mpfr_set_prec (x, 9); + mpfr_set_prec (y, 19); + mpfr_set_str_binary (x, "0.110000000E-6"); + mpfr_asin (y, x, GMP_RNDD); + mpfr_set_prec (x, 19); + mpfr_set_str_binary (x, "0.1100000000000001001E-6"); + if (mpfr_cmp (x, y)) + { + printf ("Error: mpfr_asin (3)\n"); + mpfr_dump (x); + mpfr_dump (y); + exit (1); + } + + mpfr_clear (x); + mpfr_clear (y); +} + +static void +special_overflow (void) +{ + mpfr_t x, y; + mp_exp_t emin, emax; + + emin = mpfr_get_emin (); + emax = mpfr_get_emax (); + + set_emin (-125); + set_emax (128); + mpfr_init2 (x, 24); + mpfr_init2 (y, 48); + mpfr_set_str_binary (x, "0.101100100000000000110100E0"); + mpfr_asin (y, x, GMP_RNDN); + if (mpfr_cmp_str (y, "0.110001001101001111110000010110001000111011001000E0", + 2, GMP_RNDN)) + { + printf("Special Overflow error.\n"); + mpfr_dump (y); + exit (1); + } + mpfr_clear (y); + mpfr_clear (x); + set_emin (emin); + set_emax (emax); +} + +/* bug reported by Kevin Rauch on 15 December 2007 */ +static void +test20071215 (void) +{ + mpfr_t x, y; + + mpfr_init (x); + mpfr_init (y); + + mpfr_set_ui (x, 0, GMP_RNDN); + mpfr_neg (x, x, GMP_RNDN); + mpfr_set_ui (y, 1, GMP_RNDN); + mpfr_asin (y, x, GMP_RNDN); + MPFR_ASSERTN(mpfr_zero_p (y) && MPFR_IS_NEG(y)); + + mpfr_set_ui (x, 0, GMP_RNDN); + mpfr_set_si (y, -1, GMP_RNDN); + mpfr_asin (y, x, GMP_RNDN); + MPFR_ASSERTN(mpfr_zero_p (y) && MPFR_IS_POS(y)); + + mpfr_clear (x); + mpfr_clear (y); +} + +int +main (void) +{ + tests_start_mpfr (); + + special (); + special_overflow (); + + test_generic (2, 100, 15); + + tests_end_mpfr (); + + data_check ("data/asin", mpfr_asin, "mpfr_asin"); + bad_cases (mpfr_asin, mpfr_sin, "mpfr_asin", 256, -40, 1, 4, 128, 800, 30); + + test20071215 (); + + tests_end_mpfr (); + return 0; +}