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Annotation of OpenXM_contrib/gmp/tests/devel/divrem.c, Revision 1.1

1.1     ! ohara       1: /*
        !             2: Copyright 1996, 1997, 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 100
        !            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[2 * SIZE];
        !            93:   mp_limb_t dptr[2 * SIZE];
        !            94:   mp_limb_t qptr[2 * SIZE];
        !            95:   mp_limb_t pptr[2 * SIZE + 1];
        !            96:   mp_limb_t rptr[2 * SIZE];
        !            97:   mp_size_t nsize, dsize, qsize, rsize, psize;
        !            98:   int test;
        !            99:   mp_limb_t qlimb;
        !           100:
        !           101:   for (test = 0; ; test++)
        !           102:     {
        !           103:       printf ("%d\n", test);
        !           104: #ifdef RANDOM
        !           105:       nsize = random () % (2 * SIZE) + 1;
        !           106:       dsize = random () % nsize + 1;
        !           107: #else
        !           108:       nsize = 2 * SIZE;
        !           109:       dsize = SIZE;
        !           110: #endif
        !           111:
        !           112:       mpn_random2 (nptr, nsize);
        !           113:       mpn_random2 (dptr, dsize);
        !           114:       dptr[dsize - 1] |= (mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1);
        !           115:
        !           116:       MPN_COPY (rptr, nptr, nsize);
        !           117:       qlimb = mpn_divrem (qptr, (mp_size_t) 0, rptr, nsize, dptr, dsize);
        !           118:       rsize = dsize;
        !           119:       qsize = nsize - dsize;
        !           120:       qptr[qsize] = qlimb;
        !           121:       qsize += qlimb;
        !           122:       if (qsize == 0 || qsize > 2 * SIZE)
        !           123:        {
        !           124:          continue;             /* bogus */
        !           125:        }
        !           126:       else
        !           127:        {
        !           128:          mp_limb_t cy;
        !           129:          if (qsize > dsize)
        !           130:            mpn_mul (pptr, qptr, qsize, dptr, dsize);
        !           131:          else
        !           132:            mpn_mul (pptr, dptr, dsize, qptr, qsize);
        !           133:          psize = qsize + dsize;
        !           134:          psize -= pptr[psize - 1] == 0;
        !           135:          cy = mpn_add (pptr, pptr, psize, rptr, rsize);
        !           136:          pptr[psize] = cy;
        !           137:          psize += cy;
        !           138:        }
        !           139:
        !           140:       if (nsize != psize || mpn_cmp (nptr, pptr, nsize) != 0)
        !           141:        abort ();
        !           142:     }
        !           143: }