| /* Test file for mpfr_cmp. |
| |
| Copyright 1999, 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 <stdio.h> |
| #include <stdlib.h> |
| |
| #include "mpfr-test.h" |
| |
| int |
| main (void) |
| { |
| double x, y; |
| mpfr_t xx, yy; |
| int c; |
| long i; |
| mp_prec_t p; |
| |
| tests_start_mpfr (); |
| |
| mpfr_init (xx); |
| mpfr_init (yy); |
| |
| mpfr_set_prec (xx, 2); |
| mpfr_set_prec (yy, 2); |
| mpfr_set_str_binary(xx, "-0.10E0"); |
| mpfr_set_str_binary(yy, "-0.10E0"); |
| if ((mpfr_cmp) (xx, yy)) |
| { |
| printf ("mpfr_cmp (xx, yy) returns non-zero for prec=2\n"); |
| exit (1); |
| } |
| |
| mpfr_set_prec (xx, 65); |
| mpfr_set_prec (yy, 65); |
| mpfr_set_str_binary(xx, "0.10011010101000110101010000000011001001001110001011101011111011101E623"); |
| mpfr_set_str_binary(yy, "0.10011010101000110101010000000011001001001110001011101011111011100E623"); |
| p = 0; |
| if (mpfr_cmp2 (xx, yy, &p) <= 0 || p != 64) |
| { |
| printf ("Error (1) in mpfr_cmp2\n"); |
| exit (1); |
| } |
| mpfr_set_str_binary(xx, "0.10100010001110110111000010001000010011111101000100011101000011100"); |
| mpfr_set_str_binary(yy, "0.10100010001110110111000010001000010011111101000100011101000011011"); |
| p = 0; |
| if (mpfr_cmp2 (xx, yy, &p) <= 0 || p != 64) |
| { |
| printf ("Error (2) in mpfr_cmp2\n"); |
| exit (1); |
| } |
| |
| mpfr_set_prec (xx, 160); mpfr_set_prec (yy, 160); |
| mpfr_set_str_binary (xx, "0.1E1"); |
| mpfr_set_str_binary (yy, "0.1111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111100000110001110100"); |
| p = 0; |
| if (mpfr_cmp2 (xx, yy, &p) <= 0 || p != 144) |
| { |
| printf ("Error (3) in mpfr_cmp2\n"); |
| exit (1); |
| } |
| |
| mpfr_set_prec (xx, 53); |
| mpfr_set_prec (yy, 200); |
| mpfr_set_ui (xx, 1, (mp_rnd_t) 0); |
| mpfr_set_ui (yy, 1, (mp_rnd_t) 0); |
| if (mpfr_cmp (xx, yy) != 0) |
| { |
| printf ("Error in mpfr_cmp: 1.0 != 1.0\n"); |
| exit (1); |
| } |
| mpfr_set_prec (yy, 31); |
| mpfr_set_str (xx, "1.0000000002", 10, (mp_rnd_t) 0); |
| mpfr_set_ui (yy, 1, (mp_rnd_t) 0); |
| if (!(mpfr_cmp (xx,yy)>0)) |
| { |
| printf ("Error in mpfr_cmp: not 1.0000000002 > 1.0\n"); |
| exit (1); |
| } |
| mpfr_set_prec (yy, 53); |
| |
| /* bug found by Gerardo Ballabio */ |
| mpfr_set_ui(xx, 0, GMP_RNDN); |
| mpfr_set_str (yy, "0.1", 10, GMP_RNDN); |
| if ((c = mpfr_cmp (xx, yy)) >= 0) |
| { |
| printf ("Error in mpfr_cmp(0.0, 0.1), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_inf (xx, 1); |
| mpfr_set_str (yy, "-23489745.0329", 10, GMP_RNDN); |
| if ((c = mpfr_cmp (xx, yy)) <= 0) |
| { |
| printf ("Error in mpfr_cmp(Infp, 23489745.0329), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_inf (xx, 1); |
| mpfr_set_inf (yy, -1); |
| if ((c = mpfr_cmp (xx, yy)) <= 0) |
| { |
| printf ("Error in mpfr_cmp(Infp, Infm), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_inf (xx, -1); |
| mpfr_set_inf (yy, 1); |
| if ((c = mpfr_cmp (xx, yy)) >= 0) |
| { |
| printf ("Error in mpfr_cmp(Infm, Infp), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_inf (xx, 1); |
| mpfr_set_inf (yy, 1); |
| if ((c = mpfr_cmp (xx, yy)) != 0) |
| { |
| printf ("Error in mpfr_cmp(Infp, Infp), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_inf (xx, -1); |
| mpfr_set_inf (yy, -1); |
| if ((c = mpfr_cmp (xx, yy)) != 0) |
| { |
| printf ("Error in mpfr_cmp(Infm, Infm), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_inf (xx, -1); |
| mpfr_set_str (yy, "2346.09234", 10, GMP_RNDN); |
| if ((c = mpfr_cmp (xx, yy)) >= 0) |
| { |
| printf ("Error in mpfr_cmp(Infm, 2346.09234), gives %d\n", c); |
| exit (1); |
| } |
| |
| mpfr_set_ui (xx, 0, GMP_RNDN); |
| mpfr_set_ui (yy, 1, GMP_RNDN); |
| if ((c = mpfr_cmp3 (xx, yy, 1)) >= 0) |
| { |
| printf ("Error: mpfr_cmp3 (0, 1, 1) gives %d instead of" |
| " a negative value\n", c); |
| exit (1); |
| } |
| if ((c = mpfr_cmp3 (xx, yy, -1)) <= 0) |
| { |
| printf ("Error: mpfr_cmp3 (0, 1, -1) gives %d instead of" |
| " a positive value\n", c); |
| exit (1); |
| } |
| |
| for (i=0; i<500000; ) |
| { |
| x = DBL_RAND (); |
| y = DBL_RAND (); |
| if (!Isnan(x) && !Isnan(y)) |
| { |
| i++; |
| mpfr_set_d (xx, x, GMP_RNDN); |
| mpfr_set_d (yy, y, GMP_RNDN); |
| c = mpfr_cmp (xx,yy); |
| if ((c>0 && x<=y) || (c==0 && x!=y) || (c<0 && x>=y)) |
| { |
| printf ("Error in mpfr_cmp with x=%1.20e, y=%1.20e" |
| " mpfr_cmp(x,y)=%d\n", x, y, c); |
| exit (1); |
| } |
| } |
| } |
| |
| /* Check for NAN */ |
| mpfr_set_nan (xx); |
| mpfr_clear_erangeflag (); |
| c = (mpfr_cmp) (xx, yy); |
| if (c != 0 || !mpfr_erangeflag_p () ) |
| { |
| printf ("NAN error (1)\n"); |
| exit (1); |
| } |
| mpfr_clear_erangeflag (); |
| c = (mpfr_cmp) (yy, xx); |
| if (c != 0 || !mpfr_erangeflag_p () ) |
| { |
| printf ("NAN error (2)\n"); |
| exit (1); |
| } |
| mpfr_clear_erangeflag (); |
| c = (mpfr_cmp) (xx, xx); |
| if (c != 0 || !mpfr_erangeflag_p () ) |
| { |
| printf ("NAN error (3)\n"); |
| exit (1); |
| } |
| |
| mpfr_clear (xx); |
| mpfr_clear (yy); |
| |
| tests_end_mpfr (); |
| return 0; |
| } |