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

1.1     ! maekawa     1: #include <stdio.h>
        !             2: #include "gmp.h"
        !             3: #include "gmp-impl.h"
        !             4: #include "longlong.h"
        !             5:
        !             6: #ifndef USG
        !             7: #include <sys/time.h>
        !             8: #include <sys/resource.h>
        !             9:
        !            10: unsigned long
        !            11: cputime ()
        !            12: {
        !            13:     struct rusage rus;
        !            14:
        !            15:     getrusage (0, &rus);
        !            16:     return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
        !            17: }
        !            18: #else
        !            19: #include <time.h>
        !            20:
        !            21: #ifndef CLOCKS_PER_SEC
        !            22: #define CLOCKS_PER_SEC 1000000
        !            23: #endif
        !            24:
        !            25: #if CLOCKS_PER_SEC >= 10000
        !            26: #define CLOCK_TO_MILLISEC(cl) ((cl) / (CLOCKS_PER_SEC / 1000))
        !            27: #else
        !            28: #define CLOCK_TO_MILLISEC(cl) ((cl) * 1000 / CLOCKS_PER_SEC)
        !            29: #endif
        !            30:
        !            31: unsigned long
        !            32: cputime ()
        !            33: {
        !            34:   return CLOCK_TO_MILLISEC (clock ());
        !            35: }
        !            36: #endif
        !            37:
        !            38: #define M * 1000000
        !            39:
        !            40: #ifndef CLOCK
        !            41: #if defined (__m88k__)
        !            42: #define CLOCK 20 M
        !            43: #elif defined (__i386__)
        !            44: #define CLOCK (16.666667 M)
        !            45: #elif defined (__m68k__)
        !            46: #define CLOCK (20 M)
        !            47: #elif defined (_IBMR2)
        !            48: #define CLOCK (25 M)
        !            49: #elif defined (__sparc__)
        !            50: #define CLOCK (20 M)
        !            51: #elif defined (__sun__)
        !            52: #define CLOCK (20 M)
        !            53: #elif defined (__mips)
        !            54: #define CLOCK (40 M)
        !            55: #elif defined (__hppa__)
        !            56: #define CLOCK (50 M)
        !            57: #elif defined (__alpha)
        !            58: #define CLOCK (133 M)
        !            59: #else
        !            60: #error "Don't know CLOCK of your machine"
        !            61: #endif
        !            62: #endif
        !            63:
        !            64: #ifndef OPS
        !            65: #define OPS 20000000
        !            66: #endif
        !            67: #ifndef SIZE
        !            68: #define SIZE 100
        !            69: #endif
        !            70: #ifndef TIMES
        !            71: #define TIMES OPS/SIZE
        !            72: #else
        !            73: #undef OPS
        !            74: #define OPS (SIZE*TIMES)
        !            75: #endif
        !            76:
        !            77: main ()
        !            78: {
        !            79:   mp_limb_t nptr[2 * SIZE];
        !            80:   mp_limb_t dptr[SIZE];
        !            81:   mp_limb_t qptr[2 * SIZE];
        !            82:   mp_limb_t pptr[2 * SIZE];
        !            83:   mp_limb_t rptr[2 * SIZE];
        !            84:   mp_size_t nsize, dsize, qsize, rsize, psize;
        !            85:   int test;
        !            86:   mp_limb_t qlimb;
        !            87:
        !            88:   for (test = 0; ; test++)
        !            89:     {
        !            90: #ifdef RANDOM
        !            91:       nsize = random () % (2 * SIZE) + 1;
        !            92:       dsize = random () % nsize + 1;
        !            93: #else
        !            94:       nsize = 2 * SIZE;
        !            95:       dsize = SIZE;
        !            96: #endif
        !            97:
        !            98:       mpn_random2 (nptr, nsize);
        !            99:       mpn_random2 (dptr, dsize);
        !           100:       dptr[dsize - 1] |= (mp_limb_t) 1 << (BITS_PER_MP_LIMB - 1);
        !           101:
        !           102:       MPN_COPY (rptr, nptr, nsize);
        !           103:       qlimb = mpn_divrem (qptr, (mp_size_t) 0, rptr, nsize, dptr, dsize);
        !           104:       rsize = dsize;
        !           105:       qsize = nsize - dsize;
        !           106:       qptr[qsize] = qlimb;
        !           107:       qsize += qlimb;
        !           108:       if (qsize == 0 || qsize > 2 * SIZE)
        !           109:        {
        !           110:          continue;             /* bogus */
        !           111:        }
        !           112:       else
        !           113:        {
        !           114:          mp_limb_t cy;
        !           115:          if (qsize > dsize)
        !           116:            mpn_mul (pptr, qptr, qsize, dptr, dsize);
        !           117:          else
        !           118:            mpn_mul (pptr, dptr, dsize, qptr, qsize);
        !           119:          psize = qsize + dsize;
        !           120:          psize -= pptr[psize - 1] == 0;
        !           121:          cy = mpn_add (pptr, pptr, psize, rptr, rsize);
        !           122:          pptr[psize] = cy;
        !           123:          psize += cy;
        !           124:        }
        !           125:
        !           126:       if (nsize != psize || mpn_cmp (nptr, pptr, nsize) != 0)
        !           127:        abort ();
        !           128:     }
        !           129: }