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Annotation of OpenXM_contrib/gmp/mpz/tests/bit.c, Revision 1.1

1.1     ! maekawa     1: /* Test mpz_setbit, mpz_clrbit, mpz_tstbit.
        !             2:
        !             3: Copyright (C) 1997 Free Software Foundation, Inc.
        !             4:
        !             5: This file is part of the GNU MP Library.
        !             6:
        !             7: The GNU MP Library is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU Lesser General Public License as published by
        !             9: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            10: option) any later version.
        !            11:
        !            12: The GNU MP Library is distributed in the hope that it will be useful, but
        !            13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Lesser General Public License
        !            18: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            20: MA 02111-1307, USA. */
        !            21:
        !            22: #include <stdio.h>
        !            23: #include "gmp.h"
        !            24: #include "gmp-impl.h"
        !            25: #include "urandom.h"
        !            26:
        !            27: void debug_mp ();
        !            28:
        !            29: #ifndef SIZE
        !            30: #define SIZE 4
        !            31: #endif
        !            32:
        !            33: main (argc, argv)
        !            34:      int argc;
        !            35:      char **argv;
        !            36: {
        !            37:   mpz_t x, s0, s1, s2, s3, m;
        !            38:   mp_size_t xsize;
        !            39:   int i;
        !            40:   int reps = 100000;
        !            41:   int bit0, bit1, bit2, bit3;
        !            42:   unsigned long int bitindex;
        !            43:
        !            44:   if (argc == 2)
        !            45:      reps = atoi (argv[1]);
        !            46:
        !            47:   mpz_init (x);
        !            48:   mpz_init (s0);
        !            49:   mpz_init (s1);
        !            50:   mpz_init (s2);
        !            51:   mpz_init (s3);
        !            52:   mpz_init (m);
        !            53:
        !            54:   for (i = 0; i < reps; i++)
        !            55:     {
        !            56:       xsize = urandom () % (2 * SIZE) - SIZE;
        !            57:       mpz_random2 (x, xsize);
        !            58:       bitindex = urandom () % SIZE;
        !            59:
        !            60:       mpz_set (s0, x);
        !            61:       bit0 = mpz_tstbit (x, bitindex);
        !            62:       mpz_setbit (x, bitindex);
        !            63:       MPZ_CHECK_FORMAT (x);
        !            64:
        !            65:       mpz_set (s1, x);
        !            66:       bit1 = mpz_tstbit (x, bitindex);
        !            67:       mpz_clrbit (x, bitindex);
        !            68:       MPZ_CHECK_FORMAT (x);
        !            69:
        !            70:       mpz_set (s2, x);
        !            71:       bit2 = mpz_tstbit (x, bitindex);
        !            72:       mpz_setbit (x, bitindex);
        !            73:       MPZ_CHECK_FORMAT (x);
        !            74:
        !            75:       mpz_set (s3, x);
        !            76:       bit3 = mpz_tstbit (x, bitindex);
        !            77:
        !            78:       if (bit1 != 1 || bit2 != 0 || bit3 != 1)
        !            79:        abort ();
        !            80:
        !            81:       if (bit0 == 0)
        !            82:        {
        !            83:          if (mpz_cmp (s0, s1) == 0 || mpz_cmp (s0, s2) != 0 || mpz_cmp (s0, s3) == 0)
        !            84:            abort ();
        !            85:        }
        !            86:       else
        !            87:        {
        !            88:          if (mpz_cmp (s0, s1) != 0 || mpz_cmp (s0, s2) == 0 || mpz_cmp (s0, s3) != 0)
        !            89:            abort ();
        !            90:        }
        !            91:
        !            92:       if (mpz_cmp (s1, s2) == 0 || mpz_cmp (s1, s3) != 0)
        !            93:        abort ();
        !            94:       if (mpz_cmp (s2, s3) == 0)
        !            95:        abort ();
        !            96:
        !            97:       mpz_ui_pow_ui (m, 2L, bitindex);
        !            98:       MPZ_CHECK_FORMAT (m);
        !            99:       mpz_ior (x, s2, m);
        !           100:       MPZ_CHECK_FORMAT (x);
        !           101:       if (mpz_cmp (x, s3) != 0)
        !           102:        abort ();
        !           103:
        !           104:       mpz_com (m, m);
        !           105:       MPZ_CHECK_FORMAT (m);
        !           106:       mpz_and (x, s1, m);
        !           107:       MPZ_CHECK_FORMAT (x);
        !           108:       if (mpz_cmp (x, s2) != 0)
        !           109:        abort ();
        !           110:     }
        !           111:
        !           112:   exit (0);
        !           113: }
        !           114:
        !           115: void
        !           116: debug_mp (x, base)
        !           117:      MP_INT *x;
        !           118: {
        !           119:   mpz_out_str (stderr, base, x); fputc ('\n', stderr);
        !           120: }