| /* Test file for mpfr_add1sp. |
| |
| Copyright 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 check_special (void); |
| static void check_random (mpfr_prec_t p); |
| |
| static void |
| check_overflow (void) |
| { |
| mpfr_t x, y, z1, z2; |
| mp_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, GMP_RNDN); |
| mpfr_add1 (z2, x, y, GMP_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 \ |
| {\ |
| printf("ERROR: for %s and p=%lu and i=%d:\nB=",\ |
| mpfr_print_rnd_mode ((mp_rnd_t) r), 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);\ |
| } |
| |
| #define STD_ERROR2 \ |
| {\ |
| printf("ERROR: Wrong inexact flag for %s and p=%lu and i=%d:\nB=",\ |
| mpfr_print_rnd_mode ((mp_rnd_t) r), 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);\ |
| } |
| |
| #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 (mp_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 < GMP_RND_MAX ; r++) |
| { |
| inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r); |
| inexact2 = mpfr_add1sp(a2, b, c, (mp_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 < GMP_RND_MAX ; r++) |
| { |
| SET_PREC(53); |
| mpfr_set_str1 (b, "1@100"); |
| mpfr_set_str1 (c, "1@1"); |
| inexact1 = mpfr_add1(a1, b, c, (mp_rnd_t) r); |
| inexact2 = mpfr_add1sp(a2, b, c, (mp_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, (mp_rnd_t) r); |
| inexact2 = mpfr_add1sp(a2, b, c, (mp_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, GMP_RNDN); |
| if (mpfr_cmp (a1, a2)) |
| { |
| printf ("Regression reuse test failed!\n"); |
| exit (1); |
| } |
| |
| mpfr_clears (a1, a2, b, c, (mpfr_ptr) 0); |
| } |