Annotation of OpenXM_contrib/gmp/tests/devel/mul_1.c, Revision 1.1
1.1 ! ohara 1: /*
! 2: Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
! 3: Inc.
! 4:
! 5: This file is part of the GNU MP Library.
! 6:
! 7: The GNU MP Library is free software; you can redistribute it and/or modify
! 8: it under the terms of the GNU Lesser General Public License as published by
! 9: the Free Software Foundation; either version 2.1 of the License, or (at your
! 10: option) any later version.
! 11:
! 12: The GNU MP Library is distributed in the hope that it will be useful, but
! 13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 14: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
! 15: License for more details.
! 16:
! 17: You should have received a copy of the GNU Lesser General Public License
! 18: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 20: MA 02111-1307, USA.
! 21: */
! 22:
! 23: #include <stdio.h>
! 24: #include "gmp.h"
! 25: #include "gmp-impl.h"
! 26: #include "longlong.h"
! 27:
! 28: #if defined (USG) || defined (__SVR4) || defined (_UNICOS) || defined (__hpux)
! 29: #include <time.h>
! 30:
! 31: int
! 32: cputime ()
! 33: {
! 34: if (CLOCKS_PER_SEC < 100000)
! 35: return clock () * 1000 / CLOCKS_PER_SEC;
! 36: return clock () / (CLOCKS_PER_SEC / 1000);
! 37: }
! 38: #else
! 39: #include <sys/types.h>
! 40: #include <sys/time.h>
! 41: #include <sys/resource.h>
! 42:
! 43: int
! 44: cputime ()
! 45: {
! 46: struct rusage rus;
! 47:
! 48: getrusage (0, &rus);
! 49: return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
! 50: }
! 51: #endif
! 52:
! 53: #define M * 1000000
! 54:
! 55: #ifndef CLOCK
! 56: #error "Don't know CLOCK of your machine"
! 57: #endif
! 58:
! 59: #ifndef OPS
! 60: #define OPS (CLOCK/5)
! 61: #endif
! 62: #ifndef SIZE
! 63: #define SIZE 496
! 64: #endif
! 65: #ifndef TIMES
! 66: #define TIMES OPS/SIZE
! 67: #else
! 68: #undef OPS
! 69: #define OPS (SIZE*TIMES)
! 70: #endif
! 71:
! 72: mp_limb_t
! 73: refmpn_mul_1 (res_ptr, s1_ptr, s1_size, s2_limb)
! 74: register mp_ptr res_ptr;
! 75: register mp_srcptr s1_ptr;
! 76: mp_size_t s1_size;
! 77: register mp_limb_t s2_limb;
! 78: {
! 79: register mp_limb_t cy_limb;
! 80: register mp_size_t j;
! 81: register mp_limb_t prod_high, prod_low;
! 82:
! 83: /* The loop counter and index J goes from -S1_SIZE to -1. This way
! 84: the loop becomes faster. */
! 85: j = -s1_size;
! 86:
! 87: /* Offset the base pointers to compensate for the negative indices. */
! 88: res_ptr -= j;
! 89: s1_ptr -= j;
! 90:
! 91: cy_limb = 0;
! 92: s2_limb <<= GMP_NAIL_BITS;
! 93: do
! 94: {
! 95: umul_ppmm (prod_high, prod_low, s1_ptr[j], s2_limb);
! 96: prod_low >>= GMP_NAIL_BITS;
! 97:
! 98: prod_low = (prod_low + cy_limb) & GMP_NUMB_MASK;
! 99: cy_limb = (prod_low < cy_limb) + prod_high;
! 100:
! 101: res_ptr[j] = prod_low;
! 102: }
! 103: while (++j != 0);
! 104:
! 105: return cy_limb;
! 106: }
! 107:
! 108: main (argc, argv)
! 109: int argc;
! 110: char **argv;
! 111: {
! 112: mp_limb_t s1[SIZE];
! 113: mp_limb_t dx[SIZE+2];
! 114: mp_limb_t dy[SIZE+2];
! 115: mp_limb_t cyx, cyy;
! 116: int i;
! 117: long t0, t;
! 118: unsigned int test;
! 119: mp_limb_t xlimb;
! 120: mp_size_t size;
! 121: double cyc;
! 122: unsigned int ntests;
! 123:
! 124: ntests = ~(unsigned) 0;
! 125: if (argc == 2)
! 126: ntests = strtol (argv[1], 0, 0);
! 127:
! 128: for (test = 1; test <= ntests; test++)
! 129: {
! 130: #if TIMES == 1 && ! defined (PRINT)
! 131: if (test % (SIZE > 10000 ? 1 : 10000 / SIZE) == 0)
! 132: {
! 133: printf ("\r%u", test);
! 134: fflush (stdout);
! 135: }
! 136: #endif
! 137:
! 138: #ifdef RANDOM
! 139: size = random () % SIZE + 1;
! 140: #else
! 141: size = SIZE;
! 142: #endif
! 143:
! 144: dy[size+1] = 0x12345678;
! 145: dy[0] = 0x87654321;
! 146:
! 147: #ifdef FIXED_XLIMB
! 148: xlimb = FIXED_XLIMB;
! 149: #else
! 150: mpn_random2 (&xlimb, 1);
! 151: #endif
! 152:
! 153: #if TIMES != 1
! 154: mpn_random (s1, size);
! 155: mpn_random (dy+1, size);
! 156:
! 157: #ifndef NOCHECK
! 158: MPN_COPY (dx, dy, size+2);
! 159: t0 = cputime();
! 160: for (i = 0; i < TIMES; i++)
! 161: refmpn_mul_1 (dx+1, s1, size, xlimb);
! 162: t = cputime() - t0;
! 163: cyc = ((double) t * CLOCK) / (OPS * 1000.0);
! 164: printf ("refmpn_mul_1: %5ldms (%.2f cycles/limb) [%.2f Gb/s]\n",
! 165: t, cyc,
! 166: CLOCK/cyc*BITS_PER_MP_LIMB*BITS_PER_MP_LIMB/1e9);
! 167: #endif
! 168:
! 169: MPN_COPY (dx, dy, size+2);
! 170: t0 = cputime();
! 171: for (i = 0; i < TIMES; i++)
! 172: mpn_mul_1 (dx+1, s1, size, xlimb);
! 173: t = cputime() - t0;
! 174: cyc = ((double) t * CLOCK) / (OPS * 1000.0);
! 175: printf ("mpn_mul_1: %5ldms (%.2f cycles/limb) [%.2f Gb/s]\n",
! 176: t, cyc,
! 177: CLOCK/cyc*BITS_PER_MP_LIMB*BITS_PER_MP_LIMB/1e9);
! 178: #endif
! 179:
! 180: mpn_random2 (s1, size);
! 181: mpn_random2 (dy+1, size);
! 182: #if defined (PRINT) || defined (XPRINT)
! 183: printf ("xlimb=");
! 184: mpn_print (&xlimb, 1);
! 185: #endif
! 186: #ifdef PRINT
! 187: printf ("%*s ", (int) (2 * sizeof(mp_limb_t)), "");
! 188: mpn_print (s1, size);
! 189: #endif
! 190:
! 191: MPN_COPY (dx, dy, size+2);
! 192: cyx = refmpn_mul_1 (dx+1, s1, size, xlimb);
! 193: cyy = mpn_mul_1 (dy+1, s1, size, xlimb);
! 194:
! 195: #ifdef PRINT
! 196: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
! 197: mpn_print (dx+1, size);
! 198: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
! 199: mpn_print (dy+1, size);
! 200: #endif
! 201:
! 202: #ifndef NOCHECK
! 203: if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0
! 204: || dx[size+1] != 0x12345678 || dx[0] != 0x87654321)
! 205: {
! 206: printf ("\n");
! 207: #ifndef PRINT
! 208: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
! 209: mpn_print (dx+1, size);
! 210: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
! 211: mpn_print (dy+1, size);
! 212: #endif
! 213: printf ("%*s ", (int) (2 * sizeof(mp_limb_t)), "DIFF:");
! 214: for (i = size; i != 0; i--)
! 215: {
! 216: mp_limb_t diff = dy[i] ^ dx[i];
! 217: if (diff != 0)
! 218: printf ("%*lX", (int) (2 * sizeof(mp_limb_t)), diff);
! 219: else
! 220: printf ("%*s", (int) (2 * sizeof(mp_limb_t)), "");
! 221: #ifdef SPACE
! 222: if (i != 0)
! 223: printf (" ");
! 224: #endif
! 225: }
! 226: printf ("\n");
! 227: if (dy[0] != 0x87654321)
! 228: printf ("clobbered at low end\n");
! 229: if (dy[size+1] != 0x12345678)
! 230: printf ("clobbered at high end\n");
! 231: printf ("TEST NUMBER %u\n", test);
! 232: abort();
! 233: }
! 234: #endif
! 235: #ifdef ONE
! 236: return 0;
! 237: #endif
! 238: }
! 239: }
! 240:
! 241: mpn_print (mp_ptr p, mp_size_t size)
! 242: {
! 243: mp_size_t i;
! 244:
! 245: for (i = size - 1; i >= 0; i--)
! 246: {
! 247: #ifdef _LONG_LONG_LIMB
! 248: printf ("%0*lX%0*lX", (int) (sizeof(mp_limb_t)),
! 249: (unsigned long) (p[i] >> (BITS_PER_MP_LIMB/2)),
! 250: (int) (sizeof(mp_limb_t)), (unsigned long) (p[i]));
! 251: #else
! 252: printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);
! 253: #endif
! 254: #ifdef SPACE
! 255: if (i != 0)
! 256: printf (" ");
! 257: #endif
! 258: }
! 259: puts ("");
! 260: }
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