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Annotation of OpenXM/src/kan96xx/gmp-2.0.2-ssh-2/mpn/tests/rshift.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 10000000
                     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_rshift (wp, up, usize, cnt)
                     79:      register mp_ptr wp;
                     80:      register mp_srcptr up;
                     81:      mp_size_t usize;
                     82:      register unsigned int cnt;
                     83: {
                     84:   register mp_limb_t high_limb, low_limb;
                     85:   register unsigned sh_1, sh_2;
                     86:   register mp_size_t i;
                     87:   mp_limb_t retval;
                     88:
                     89: #ifdef DEBUG
                     90:   if (usize == 0 || cnt == 0)
                     91:     abort ();
                     92: #endif
                     93:
                     94:   sh_1 = cnt;
                     95: #if 0
                     96:   if (sh_1 == 0)
                     97:     {
                     98:       if (wp != up)
                     99:        {
                    100:          /* Copy from low end to high end, to allow specified input/output
                    101:             overlapping.  */
                    102:          for (i = 0; i < usize; i++)
                    103:            wp[i] = up[i];
                    104:        }
                    105:       return 0;
                    106:     }
                    107: #endif
                    108:
                    109:   wp -= 1;
                    110:   sh_2 = BITS_PER_MP_LIMB - sh_1;
                    111:   high_limb = up[0];
                    112:   retval = high_limb << sh_2;
                    113:   low_limb = high_limb;
                    114:
                    115:   for (i = 1; i < usize; i++)
                    116:     {
                    117:       high_limb = up[i];
                    118:       wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);
                    119:       low_limb = high_limb;
                    120:     }
                    121:   low_limb >>= sh_1;
                    122:   wp[i] = low_limb;
                    123:
                    124:   return retval;
                    125: }
                    126:
                    127: #ifndef CNT
                    128: #define CNT 4
                    129: #endif
                    130:
                    131: main (argc, argv)
                    132:      int argc;
                    133:      char **argv;
                    134: {
                    135:   mp_limb_t s1[SIZE];
                    136:   mp_limb_t dx[SIZE+2];
                    137:   mp_limb_t dy[SIZE+2];
                    138:   mp_limb_t cyx, cyy;
                    139:   int i;
                    140:   long t0, t;
                    141:   int test;
                    142:   int cnt = CNT;
                    143:   mp_size_t size;
                    144:
                    145:   for (test = 0; ; test++)
                    146:     {
                    147: #ifdef RANDOM
                    148:       size = (random () % SIZE + 1);
                    149: #else
                    150:       size = SIZE;
                    151: #endif
                    152:       mpn_random2 (s1, size);
                    153:
                    154:       dx[size+1] = 0x12345678;
                    155:       dy[size+1] = 0x12345678;
                    156:       dx[0] = 0x87654321;
                    157:       dy[0] = 0x87654321;
                    158:
                    159: #ifdef PRINT
                    160:       mpn_print (s1, size);
                    161: #endif
                    162:       t0 = cputime();
                    163:       for (i = 0; i < TIMES; i++)
                    164:        cyx = refmpn_rshift (dx+1, s1, size, cnt);
                    165:       t = cputime() - t0;
                    166: #if TIMES != 1
                    167:       printf ("refmpn_rshift: %5ldms (%.2f cycles/limb)\n",
                    168:              t,
                    169:              ((double) t * CLOCK) / (OPS * 1000.0));
                    170: #endif
                    171: #ifdef PRINT
                    172:       printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx); mpn_print (dx+1, size);
                    173: #endif
                    174:
                    175:       t0 = cputime();
                    176:       for (i = 0; i < TIMES; i++)
                    177:        cyy = mpn_rshift (dx+1, s1, size, cnt);
                    178:       t = cputime() - t0;
                    179: #if TIMES != 1
                    180:       printf ("mpn_rshift:  %5ldms (%.2f cycles/limb)\n",
                    181:              t,
                    182:              ((double) t * CLOCK) / (OPS * 1000.0));
                    183: #endif
                    184: #ifdef PRINT
                    185:       printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy); mpn_print (dx+1, size);
                    186: #endif
                    187:
                    188: #ifndef NOCHECK
                    189:       /* Put garbage in the destination.  */
                    190:       for (i = 1; i <= size; i++)
                    191:        {
                    192:          dx[i] = 0x7654321;
                    193:          dy[i] = 0x1234567;
                    194:        }
                    195:
                    196:       cyx = refmpn_rshift (dx+1, s1, size, cnt);
                    197:       cyy = mpn_rshift (dy+1, s1, size, cnt);
                    198:
                    199:       if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0
                    200:          || dx[size+1] != 0x12345678 || dx[0] != 0x87654321)
                    201:        {
                    202: #ifndef PRINT
                    203:          printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
                    204:          mpn_print (dx+1, size);
                    205:          printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
                    206:          mpn_print (dy+1, size);
                    207: #endif
                    208:          abort();
                    209:        }
                    210: #endif
                    211:     }
                    212: }
                    213:
                    214: mpn_print (mp_ptr p, mp_size_t size)
                    215: {
                    216:   mp_size_t i;
                    217:
                    218:   for (i = size - 1; i >= 0; i--)
                    219:     {
                    220:       printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);
                    221: #ifdef SPACE
                    222:       if (i != 0)
                    223:        printf (" ");
                    224: #endif
                    225:     }
                    226:   puts ("");
                    227: }

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