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Annotation of OpenXM_contrib/gmp/tests/mpz/t-popcount.c, Revision 1.1

1.1     ! ohara       1: /* Test mpz_popcount.
        !             2:
        !             3: Copyright 2001 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 <stdlib.h>
        !            24: #include "gmp.h"
        !            25: #include "gmp-impl.h"
        !            26: #include "tests.h"
        !            27:
        !            28:
        !            29:
        !            30: void
        !            31: check_onebit (void)
        !            32: {
        !            33:   mpz_t          n;
        !            34:   unsigned long  i, got;
        !            35:
        !            36:   mpz_init (n);
        !            37:   for (i = 0; i < 5 * BITS_PER_MP_LIMB; i++)
        !            38:     {
        !            39:       mpz_setbit (n, i);
        !            40:       got = mpz_popcount (n);
        !            41:       if (got != 1)
        !            42:         {
        !            43:           printf ("mpz_popcount wrong on single bit at %lu\n", i);
        !            44:           printf ("   got %lu, want 1\n", got);
        !            45:           abort();
        !            46:         }
        !            47:       mpz_clrbit (n, i);
        !            48:     }
        !            49:   mpz_clear (n);
        !            50: }
        !            51:
        !            52:
        !            53: void
        !            54: check_data (void)
        !            55: {
        !            56:   static const struct {
        !            57:     const char     *n;
        !            58:     unsigned long  want;
        !            59:   } data[] = {
        !            60:     { "-1", ~ (unsigned long) 0 },
        !            61:     { "-12345678", ~ (unsigned long) 0 },
        !            62:     { "0", 0 },
        !            63:     { "1", 1 },
        !            64:     { "3", 2 },
        !            65:     { "5", 2 },
        !            66:     { "0xFFFF", 16 },
        !            67:     { "0xFFFFFFFF", 32 },
        !            68:     { "0xFFFFFFFFFFFFFFFF", 64 },
        !            69:     { "0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 128 },
        !            70:   };
        !            71:
        !            72:   unsigned long   got;
        !            73:   int    i;
        !            74:   mpz_t  n;
        !            75:
        !            76:   mpz_init (n);
        !            77:   for (i = 0; i < numberof (data); i++)
        !            78:     {
        !            79:       mpz_set_str_or_abort (n, data[i].n, 0);
        !            80:       got = mpz_popcount (n);
        !            81:       if (got != data[i].want)
        !            82:         {
        !            83:           printf ("mpz_popcount wrong at data[%d]\n", i);
        !            84:           printf ("   n     \"%s\"\n", data[i].n);
        !            85:           printf ("         ");   mpz_out_str (stdout, 10, n); printf ("\n");
        !            86:           printf ("         0x"); mpz_out_str (stdout, 16, n); printf ("\n");
        !            87:           printf ("   got   %lu\n", got);
        !            88:           printf ("   want  %lu\n", data[i].want);
        !            89:           abort();
        !            90:         }
        !            91:     }
        !            92:   mpz_clear (n);
        !            93: }
        !            94:
        !            95:
        !            96: int
        !            97: main (void)
        !            98: {
        !            99:   tests_start ();
        !           100:
        !           101:   check_onebit ();
        !           102:   check_data ();
        !           103:
        !           104:   tests_end ();
        !           105:   exit (0);
        !           106: }