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Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpn/tests/mul_1.c, Revision 1.1.1.1

1.1       takayama    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 496
                     69: #endif
                     70: #ifndef TIMES
                     71: #define TIMES OPS/SIZE
                     72: #else
                     73: #undef OPS
                     74: #define OPS (SIZE*TIMES)
                     75: #endif
                     76:
                     77: mp_limb_t
                     78: refmpn_mul_1 (res_ptr, s1_ptr, s1_size, s2_limb)
                     79:      register mp_ptr res_ptr;
                     80:      register mp_srcptr s1_ptr;
                     81:      mp_size_t s1_size;
                     82:      register mp_limb_t s2_limb;
                     83: {
                     84:   register mp_limb_t cy_limb;
                     85:   register mp_size_t j;
                     86:   register mp_limb_t prod_high, prod_low;
                     87:
                     88:   /* The loop counter and index J goes from -S1_SIZE to -1.  This way
                     89:      the loop becomes faster.  */
                     90:   j = -s1_size;
                     91:
                     92:   /* Offset the base pointers to compensate for the negative indices.  */
                     93:   s1_ptr -= j;
                     94:   res_ptr -= j;
                     95:
                     96:   cy_limb = 0;
                     97:   do
                     98:     {
                     99:       umul_ppmm (prod_high, prod_low, s1_ptr[j], s2_limb);
                    100:
                    101:       prod_low += cy_limb;
                    102:       cy_limb = (prod_low < cy_limb) + prod_high;
                    103:
                    104:       res_ptr[j] = prod_low;
                    105:     }
                    106:   while (++j != 0);
                    107:
                    108:   return cy_limb;
                    109: }
                    110:
                    111: main (argc, argv)
                    112:      int argc;
                    113:      char **argv;
                    114: {
                    115:   mp_limb_t s1[SIZE];
                    116:   mp_limb_t dx[SIZE+2];
                    117:   mp_limb_t dy[SIZE+2];
                    118:   mp_limb_t cyx, cyy;
                    119:   int i;
                    120:   long t0, t;
                    121:   int test;
                    122:   mp_limb_t xlimb;
                    123:   mp_size_t size;
                    124:
                    125:   for (test = 0; ; test++)
                    126:     {
                    127: #ifdef RANDOM
                    128:       size = (random () % SIZE + 1);
                    129: #else
                    130:       size = SIZE;
                    131: #endif
                    132:
                    133:       mpn_random2 (s1, size);
                    134:       mpn_random2 (dy+1, size);
                    135:
                    136:       if (random () % 0x100 == 0)
                    137:        xlimb = 0;
                    138:       else
                    139:        mpn_random2 (&xlimb, 1);
                    140:
                    141:       dy[size+1] = 0x12345678;
                    142:       dy[0] = 0x87654321;
                    143:
                    144: #if defined (PRINT) || defined (XPRINT)
                    145:       printf ("xlimb=%*lX\n", (int) (2 * sizeof(mp_limb_t)), xlimb);
                    146: #endif
                    147: #ifdef PRINT
                    148:       mpn_print (s1, size);
                    149: #endif
                    150:
                    151:       MPN_COPY (dx, dy, size+2);
                    152:       t0 = cputime();
                    153:       for (i = 0; i < TIMES; i++)
                    154:        cyx = refmpn_mul_1 (dx+1, s1, size, xlimb);
                    155:       t = cputime() - t0;
                    156: #if TIMES != 1
                    157:       printf ("refmpn_mul_1: %5ldms (%.2f cycles/limb)\n",
                    158:              t,
                    159:              ((double) t * CLOCK) / (OPS * 1000.0));
                    160: #endif
                    161:
                    162:       MPN_COPY (dx, dy, size+2);
                    163:       t0 = cputime();
                    164:       for (i = 0; i < TIMES; i++)
                    165:        cyy = mpn_mul_1 (dx+1, s1, size, xlimb);
                    166:       t = cputime() - t0;
                    167: #if TIMES != 1
                    168:       printf ("mpn_mul_1:    %5ldms (%.2f cycles/limb)\n",
                    169:              t,
                    170:              ((double) t * CLOCK) / (OPS * 1000.0));
                    171: #endif
                    172:
                    173:       cyx = refmpn_mul_1 (dx+1, s1, size, xlimb);
                    174:       cyy = mpn_mul_1 (dy+1, s1, size, xlimb);
                    175:
                    176: #ifdef PRINT
                    177:       printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
                    178:       mpn_print (dx+1, size);
                    179:       printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
                    180:       mpn_print (dy+1, size);
                    181: #endif
                    182:
                    183: #ifndef NOCHECK
                    184:       if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0
                    185:          || dx[size+1] != 0x12345678 || dx[0] != 0x87654321)
                    186:        {
                    187: #ifndef PRINT
                    188:          printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
                    189:          mpn_print (dx+1, size);
                    190:          printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
                    191:          mpn_print (dy+1, size);
                    192: #endif
                    193:          abort();
                    194:        }
                    195: #endif
                    196:     }
                    197: }
                    198:
                    199: mpn_print (mp_ptr p, mp_size_t size)
                    200: {
                    201:   mp_size_t i;
                    202:
                    203:   for (i = size - 1; i >= 0; i--)
                    204:     {
                    205:       printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);
                    206: #ifdef SPACE
                    207:       if (i != 0)
                    208:        printf (" ");
                    209: #endif
                    210:     }
                    211:   puts ("");
                    212: }

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