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Diffstat (limited to 'tests/tadd1sp.c')
| -rw-r--r-- | tests/tadd1sp.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/tests/tadd1sp.c b/tests/tadd1sp.c new file mode 100644 index 0000000..1ca4444 --- /dev/null +++ b/tests/tadd1sp.c @@ -0,0 +1,189 @@ +/* Test file for mpfr_add1sp. + +Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. +Contributed by the AriC and Caramel 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 3 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.LESSER. If not, see +http://www.gnu.org/licenses/ or 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 check_special (void); +static void check_random (mpfr_prec_t p); + +static void +check_overflow (void) +{ + mpfr_t x, y, z1, z2; + mpfr_exp_t emin, emax; + + emin = mpfr_get_emin (); + emax = mpfr_get_emax (); + + set_emin (-1021); + set_emax (1024); + + mpfr_inits (x, y, z1, z2, (mpfr_ptr) 0); + + mpfr_set_str1 (x, "8.00468257869324898448e+307"); + mpfr_set_str1 (y, "7.44784712422708645156e+307"); + mpfr_add1sp (z1, x, y, MPFR_RNDN); + mpfr_add1 (z2, x, y, MPFR_RNDN); + if (mpfr_cmp (z1, z2)) + { + printf ("Overflow bug in add1sp.\n"); + exit (1); + } + mpfr_clears (x, y, z1, z2, (mpfr_ptr) 0); + + set_emin (emin); + set_emax (emax); +} + +int +main (void) +{ + mpfr_prec_t p; + + tests_start_mpfr (); + + check_special (); + for(p = 2 ; p < 200 ; p++) + check_random (p); + check_overflow (); + + tests_end_mpfr (); + return 0; +} + +#define STD_ERROR \ + do \ + { \ + printf("ERROR: for %s and p=%lu and i=%d:\nB=", \ + mpfr_print_rnd_mode ((mpfr_rnd_t) r), (unsigned long) p, i); \ + mpfr_print_binary(b); \ + printf("\nC="); mpfr_print_binary(c); \ + printf("\nadd1 : "); mpfr_print_binary(a1); \ + printf("\nadd1sp: "); mpfr_print_binary(a2); \ + putchar('\n'); \ + exit(1); \ + } \ + while (0) + +#define STD_ERROR2 \ + do \ + { \ + printf("ERROR: Wrong inexact flag for %s and p=%lu and i=%d:\nB=", \ + mpfr_print_rnd_mode ((mpfr_rnd_t) r), (unsigned long) p, i); \ + mpfr_print_binary(b); \ + printf("\nC="); mpfr_print_binary(c); \ + printf("\nA="); mpfr_print_binary(a1); \ + printf("\nAdd1: %d. Add1sp: %d\n", \ + inexact1, inexact2); \ + exit(1); \ + } \ + while (0) + +#define SET_PREC(_p) \ + { \ + p = _p; \ + mpfr_set_prec(a1, _p); mpfr_set_prec(a2, _p); \ + mpfr_set_prec(b, _p); mpfr_set_prec(c, _p); \ + } + +static void +check_random (mpfr_prec_t p) +{ + mpfr_t a1,b,c,a2; + int r; + int i, inexact1, inexact2; + + mpfr_inits2 (p, a1, b, c, a2, (mpfr_ptr) 0); + + for (i = 0 ; i < 500 ; i++) + { + mpfr_urandomb (b, RANDS); + mpfr_urandomb (c, RANDS); + if (MPFR_IS_PURE_FP(b) && MPFR_IS_PURE_FP(c)) + { + if (MPFR_GET_EXP(b) < MPFR_GET_EXP(c)) + mpfr_swap(b, c); + if (MPFR_IS_PURE_FP(b) && MPFR_IS_PURE_FP(c)) + for (r = 0 ; r < MPFR_RND_MAX ; r++) + { + inexact1 = mpfr_add1(a1, b, c, (mpfr_rnd_t) r); + inexact2 = mpfr_add1sp(a2, b, c, (mpfr_rnd_t) r); + if (mpfr_cmp(a1, a2)) + STD_ERROR; + if (inexact1 != inexact2) + STD_ERROR2; + } + } + } + + mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0); +} + +static void +check_special (void) +{ + mpfr_t a1,a2,b,c; + int r; + mpfr_prec_t p; + int i = -1, inexact1, inexact2; + + mpfr_inits (a1, a2, b, c, (mpfr_ptr) 0); + + for (r = 0 ; r < MPFR_RND_MAX ; r++) + { + SET_PREC(53); + mpfr_set_str1 (b, "1@100"); + mpfr_set_str1 (c, "1@1"); + inexact1 = mpfr_add1(a1, b, c, (mpfr_rnd_t) r); + inexact2 = mpfr_add1sp(a2, b, c, (mpfr_rnd_t) r); + if (mpfr_cmp(a1, a2)) + STD_ERROR; + if (inexact1 != inexact2) + STD_ERROR2; + mpfr_set_str_binary (b, "1E53"); + mpfr_set_str_binary (c, "1E0"); + inexact1 = mpfr_add1(a1, b, c, (mpfr_rnd_t) r); + inexact2 = mpfr_add1sp(a2, b, c, (mpfr_rnd_t) r); + if (mpfr_cmp(a1, a2)) + STD_ERROR; + if (inexact1 != inexact2) + STD_ERROR2; + } + + mpfr_set_prec (c, 2); + mpfr_set_prec (a1, 2); + mpfr_set_prec (a2, 2); + mpfr_set_str_binary (c, "1.0e1"); + mpfr_set_str_binary (a2, "1.1e-1"); + mpfr_set_str_binary (a1, "0.11E2"); + mpfr_add1sp (a2, c, a2, MPFR_RNDN); + if (mpfr_cmp (a1, a2)) + { + printf ("Regression reuse test failed!\n"); + exit (1); + } + + mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0); +} |