Return to t-popcount.c CVS log

Up to [local] / OpenXM_contrib / gmp / tests / mpz

Annotation of OpenXM_contrib/gmp/tests/mpz/t-popcount.c, Revision 1.1.1.1

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: }