| /* Test file for mpfr_sub1sp. |
| |
| Copyright 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 check_special (void); |
| static void check_random (mpfr_prec_t p); |
| |
| int |
| main (void) |
| { |
| mpfr_prec_t p; |
| |
| tests_start_mpfr (); |
| |
| check_special (); |
| for (p = 2 ; p < 200 ; p++) |
| check_random (p); |
| |
| tests_end_mpfr (); |
| return 0; |
| } |
| |
| #define STD_ERROR \ |
| {\ |
| printf("ERROR: for %s and p=%lu and i=%d:\nY=",\ |
| mpfr_print_rnd_mode ((mp_rnd_t) r), p, i);\ |
| mpfr_print_binary(y);\ |
| printf("\nZ="); mpfr_print_binary(z);\ |
| printf("\nReal: "); mpfr_print_binary(x2);\ |
| printf("\nGot : "); mpfr_print_binary(x);\ |
| putchar('\n');\ |
| exit(1);\ |
| } |
| |
| #define STD_ERROR2 \ |
| {\ |
| printf("ERROR: for %s and p=%lu and i=%d:\nY=",\ |
| mpfr_print_rnd_mode ((mp_rnd_t) r), p, i);\ |
| mpfr_print_binary(y);\ |
| printf("\nZ="); mpfr_print_binary(z);\ |
| printf("\nR="); mpfr_print_binary(x);\ |
| printf("\nWrong inexact flag. Real: %d. Got: %d\n", \ |
| inexact1, inexact2); \ |
| exit(1);\ |
| } |
| |
| static void |
| check_random (mpfr_prec_t p) |
| { |
| mpfr_t x,y,z,x2; |
| int r; |
| int i, inexact1, inexact2; |
| |
| mpfr_inits2 (p, x, y, z, x2, (mpfr_ptr) 0); |
| |
| for (i = 0 ; i < 500 ; i++) |
| { |
| mpfr_urandomb (y, RANDS); |
| mpfr_urandomb (z, RANDS); |
| if (MPFR_IS_PURE_FP(y) && MPFR_IS_PURE_FP(z)) |
| for(r = 0 ; r < GMP_RND_MAX ; r++) |
| { |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| } |
| } |
| |
| mpfr_clears (x, y, z, x2, (mpfr_ptr) 0); |
| } |
| |
| static void |
| check_special (void) |
| { |
| mpfr_t x,y,z,x2; |
| int r; |
| mpfr_prec_t p; |
| int i = -1, inexact1, inexact2; |
| mp_exp_t es; |
| |
| mpfr_inits (x, y, z, x2, (mpfr_ptr) 0); |
| |
| for (r = 0 ; r < GMP_RND_MAX ; r++) |
| { |
| p = 53; |
| mpfr_set_prec(x, 53); |
| mpfr_set_prec(x2, 53); |
| mpfr_set_prec(y, 53); |
| mpfr_set_prec(z, 53); |
| |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011000001101101011011001E31"); |
| |
| mpfr_sub1sp (x, y, y, (mp_rnd_t) r); |
| if (mpfr_cmp_ui(x, 0)) |
| { |
| printf("Error for x-x with p=%lu. Expected 0. Got:", p); |
| mpfr_print_binary(x); |
| exit(1); |
| } |
| |
| mpfr_set(z, y, (mp_rnd_t) r); |
| mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp_ui(x, 0)) |
| { |
| printf("Error for x-y with y=x and p=%lu. Expected 0. Got:", p); |
| mpfr_print_binary(x); |
| exit(1); |
| } |
| /* diff = 0 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011001001101101011011001E31"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| /* Diff = 1 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011000001101101011011001E30"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| /* Diff = 2 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011000101101101011011001E32"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| /* Diff = 32 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011000001101101011011001E63"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| /* Diff = 52 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011010001101101011011001E83"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| /* Diff = 53 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011111000001101101011011001E31"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| /* Diff > 200 */ |
| mpfr_set_str_binary (y, |
| "0.10110111101101110010010010011011000001101101011011001E331"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000000000000000000000000E31"); |
| mpfr_set_str_binary (z, |
| "0.11111111111111111111111111111111111111111111111111111E30"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000000000000000000000000E31"); |
| mpfr_set_str_binary (z, |
| "0.11111111111111111111111111111111111111111111111111111E29"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000000000000000000000000E52"); |
| mpfr_set_str_binary (z, |
| "0.10000000000010000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.11100000000000000000000000000000000000000000000000000E53"); |
| mpfr_set_str_binary (z, |
| "0.10000000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(z, y, z, (mp_rnd_t) r); |
| mpfr_set(x, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000000000000000000000000E53"); |
| mpfr_set_str_binary (z, |
| "0.10100000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000000000000000000000000E54"); |
| mpfr_set_str_binary (z, |
| "0.10100000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 63; |
| mpfr_set_prec(x, p); |
| mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); |
| mpfr_set_prec(z, p); |
| mpfr_set_str_binary (y, |
| "0.100000000000000000000000000000000000000000000000000000000000000E62"); |
| mpfr_set_str_binary (z, |
| "0.110000000000000000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 64; |
| mpfr_set_prec(x, 64); |
| mpfr_set_prec(x2, 64); |
| mpfr_set_prec(y, 64); |
| mpfr_set_prec(z, 64); |
| |
| mpfr_set_str_binary (y, |
| "0.1100000000000000000000000000000000000000000000000000000000000000E31"); |
| mpfr_set_str_binary (z, |
| "0.1111111111111111111111111110000000000000000000000000011111111111E29"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.1000000000000000000000000000000000000000000000000000000000000000E63"); |
| mpfr_set_str_binary (z, |
| "0.1011000000000000000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.1000000000000000000000000000000000000000000000000000000000000000E63"); |
| mpfr_set_str_binary (z, |
| "0.1110000000000000000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000000000000000000000000000000000E63"); |
| mpfr_set_str_binary (z, |
| "0.10000000000000000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.1000000000000000000000000000000000000000000000000000000000000000E64"); |
| mpfr_set_str_binary (z, |
| "0.1010000000000000000000000000000000000000000000000000000000000000E00"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| MPFR_SET_NAN(x); |
| MPFR_SET_NAN(x2); |
| mpfr_set_str_binary (y, |
| "0.1000000000000000000000000000000000000000000000000000000000000000" |
| "E-1073741823"); |
| mpfr_set_str_binary (z, |
| "0.1100000000000000000000000000000000000000000000000000000000000000" |
| "E-1073741823"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 9; |
| mpfr_set_prec(x, p); |
| mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); |
| mpfr_set_prec(z, p); |
| |
| mpfr_set_str_binary (y, "0.100000000E1"); |
| mpfr_set_str_binary (z, "0.100000000E-8"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 34; |
| mpfr_set_prec(x, p); |
| mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); |
| mpfr_set_prec(z, p); |
| |
| mpfr_set_str_binary (y, "-0.1011110000111100010111011100110100E-18"); |
| mpfr_set_str_binary (z, "0.1000101010110011010101011110000000E-14"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 124; |
| mpfr_set_prec(x, p); |
| mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); |
| mpfr_set_prec(z, p); |
| |
| mpfr_set_str_binary (y, |
| "0.1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000E1"); |
| mpfr_set_str_binary (z, |
| "0.1011111000100111000011001000011101010101101100101010101001000001110100001101110110001110111010000011101001100010111110001100E-31"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 288; |
| mpfr_set_prec(x, p); |
| mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); |
| mpfr_set_prec(z, p); |
| |
| mpfr_set_str_binary (y, |
| "0.111000110011000001000111101010111011110011101001101111111110000011100101000001001010110010101010011001010100000001110011110001010101101010001011101110100100001011110100110000101101100011010001001011011010101010000010001101001000110010010111111011110001111101001000101101001100101100101000E80"); |
| mpfr_set_str_binary (z, |
| "-0.100001111111101001011010001100110010100111001110000110011101001011010100001000000100111011010110110010000000000010101101011000010000110001110010100001100101011100100100001011000100011110000001010101000100011101001000010111100000111000111011001000100100011000100000010010111000000100100111E-258"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 85; |
| mpfr_set_prec(x, p); |
| mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); |
| mpfr_set_prec(z, p); |
| |
| mpfr_set_str_binary (y, |
| "0.1111101110100110110110100010101011101001100010100011110110110010010011101100101111100E-4"); |
| mpfr_set_str_binary (z, |
| "0.1111101110100110110110100010101001001000011000111000011101100101110100001110101010110E-4"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| p = 64; |
| mpfr_set_prec(x, p); mpfr_set_prec(x2, p); |
| mpfr_set_prec(y, p); mpfr_set_prec(z, p); |
| |
| mpfr_set_str_binary (y, |
| "0.11000000000000000000000000000000" |
| "00000000000000000000000000000000E1"); |
| mpfr_set_str_binary (z, |
| "0.10000000000000000000000000000000" |
| "00000000000000000000000000000001E0"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.11000000000000000000000000000000" |
| "000000000000000000000000000001E1"); |
| mpfr_set_str_binary (z, |
| "0.10000000000000000000000000000000" |
| "00000000000000000000000000000001E0"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| es = mpfr_get_emin (); |
| set_emin (-1024); |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000" |
| "000000000000000000000000000000E-1023"); |
| mpfr_set_str_binary (z, |
| "0.10000000000000000000000000000000" |
| "00000000000000000000000000000001E-1023"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| mpfr_set_str_binary (y, |
| "0.10000000000000000000000000000000" |
| "000000000000000000000000000000E-1023"); |
| mpfr_set_str_binary (z, |
| "0.1000000000000000000000000000000" |
| "000000000000000000000000000000E-1023"); |
| inexact1 = mpfr_sub1(x2, y, z, (mp_rnd_t) r); |
| inexact2 = mpfr_sub1sp(x, y, z, (mp_rnd_t) r); |
| if (mpfr_cmp(x, x2)) |
| STD_ERROR; |
| if (inexact1 != inexact2) |
| STD_ERROR2; |
| |
| set_emin (es); |
| } |
| |
| mpfr_clears (x, y, z, x2, (mpfr_ptr) 0); |
| } |
