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Annotation of OpenXM_contrib/gmp/tests/devel/divmod_1.c, Revision 1.1.1.1

1.1       ohara       1: /*
                      2: Copyright 1996, 1998, 2000, 2001 Free Software Foundation, Inc.
                      3:
                      4: This file is part of the GNU MP Library.
                      5:
                      6: The GNU MP Library is free software; you can redistribute it and/or modify
                      7: it under the terms of the GNU Lesser General Public License as published by
                      8: the Free Software Foundation; either version 2.1 of the License, or (at your
                      9: option) any later version.
                     10:
                     11: The GNU MP Library is distributed in the hope that it will be useful, but
                     12: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     13: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     14: License for more details.
                     15:
                     16: You should have received a copy of the GNU Lesser General Public License
                     17: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     18: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     19: MA 02111-1307, USA.
                     20: */
                     21:
                     22: #include <stdio.h>
                     23: #include "gmp.h"
                     24: #include "gmp-impl.h"
                     25:
                     26: #if defined (USG) || defined (__SVR4) || defined (_UNICOS) || defined (__hpux)
                     27: #include <time.h>
                     28:
                     29: int
                     30: cputime ()
                     31: {
                     32:   if (CLOCKS_PER_SEC < 100000)
                     33:     return clock () * 1000 / CLOCKS_PER_SEC;
                     34:   return clock () / (CLOCKS_PER_SEC / 1000);
                     35: }
                     36: #else
                     37: #include <sys/types.h>
                     38: #include <sys/time.h>
                     39: #include <sys/resource.h>
                     40:
                     41: int
                     42: cputime ()
                     43: {
                     44:   struct rusage rus;
                     45:
                     46:   getrusage (0, &rus);
                     47:   return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
                     48: }
                     49: #endif
                     50:
                     51: #define M * 1000000
                     52:
                     53: #ifndef CLOCK
                     54: #if defined (__m88k__)
                     55: #define CLOCK 20 M
                     56: #elif defined (__i386__)
                     57: #define CLOCK (16666667)
                     58: #elif defined (__m68k__)
                     59: #define CLOCK (20 M)
                     60: #elif defined (_IBMR2)
                     61: #define CLOCK (25 M)
                     62: #elif defined (__sparc__)
                     63: #define CLOCK (20 M)
                     64: #elif defined (__sun__)
                     65: #define CLOCK (20 M)
                     66: #elif defined (__mips)
                     67: #define CLOCK (40 M)
                     68: #elif defined (__hppa__)
                     69: #define CLOCK (50 M)
                     70: #elif defined (__alpha)
                     71: #define CLOCK (133 M)
                     72: #else
                     73: #error "Don't know CLOCK of your machine"
                     74: #endif
                     75: #endif
                     76:
                     77: #ifndef OPS
                     78: #define OPS 20000000
                     79: #endif
                     80: #ifndef SIZE
                     81: #define SIZE 1000
                     82: #endif
                     83: #ifndef TIMES
                     84: #define TIMES OPS/SIZE
                     85: #else
                     86: #undef OPS
                     87: #define OPS (SIZE*TIMES)
                     88: #endif
                     89:
                     90: main ()
                     91: {
                     92:   mp_limb_t nptr[SIZE];
                     93:   mp_limb_t qptr[SIZE];
                     94:   mp_limb_t pptr[SIZE];
                     95:   mp_limb_t dlimb, rlimb, plimb;
                     96:   mp_size_t nsize, qsize, psize;
                     97:   int test;
                     98:
                     99:   for (test = 0; ; test++)
                    100:     {
                    101: #ifdef RANDOM
                    102:       nsize = random () % SIZE + 1;
                    103: #else
                    104:       nsize = SIZE;
                    105: #endif
                    106:
                    107:       mpn_random2 (nptr, nsize);
                    108:
                    109:       mpn_random2 (&dlimb, 1);
                    110:       if (dlimb == 0)
                    111:        abort ();
                    112:
                    113:       rlimb = mpn_divmod_1 (qptr, nptr, nsize, dlimb);
                    114:       qsize = nsize - (qptr[nsize - 1] == 0);
                    115:       if (qsize == 0)
                    116:        {
                    117:          plimb = rlimb;
                    118:          psize = qsize;
                    119:        }
                    120:       else
                    121:        {
                    122:          plimb = mpn_mul_1 (pptr, qptr, qsize, dlimb);
                    123:          psize = qsize;
                    124:          plimb += mpn_add_1 (pptr, pptr, psize, rlimb);
                    125:        }
                    126:       if (plimb != 0)
                    127:        pptr[psize++] = plimb;
                    128:
                    129:
                    130:       if (nsize != psize || mpn_cmp (nptr, pptr, nsize) != 0)
                    131:        abort ();
                    132:     }
                    133: }