/*Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.This file is part of the GNU MP Library.The GNU MP Library is free software; you can redistribute it and/or modifyit under the terms of the GNU Lesser General Public License as published bythe Free Software Foundation; either version 2.1 of the License, or (at youroption) any later version.The GNU MP Library is distributed in the hope that it will be useful, butWITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITYor FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General PublicLicense for more details.You should have received a copy of the GNU Lesser General Public Licensealong with the GNU MP Library; see the file COPYING.LIB.  If not, write tothe Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,MA 02111-1307, USA.*/#include <stdio.h>#include "gmp.h"#include "gmp-impl.h"#if defined (USG) || defined (__SVR4) || defined (_UNICOS) || defined (__hpux)#include <time.h>intcputime (){  if (CLOCKS_PER_SEC < 100000)    return clock () * 1000 / CLOCKS_PER_SEC;  return clock () / (CLOCKS_PER_SEC / 1000);}#else#include <sys/types.h>#include <sys/time.h>#include <sys/resource.h>intcputime (){  struct rusage rus;  getrusage (0, &rus);  return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;}#endif#define M * 1000000#ifndef CLOCK#error "Don't know CLOCK of your machine"#endif#ifndef OPS#define OPS (CLOCK/5)#endif#ifndef SIZE#define SIZE 496#endif#ifndef TIMES#define TIMES OPS/SIZE#else#undef OPS#define OPS (SIZE*TIMES)#endifmp_limb_trefmpn_rshift (wp, up, usize, cnt)     register mp_ptr wp;     register mp_srcptr up;     mp_size_t usize;     register unsigned int cnt;{  register mp_limb_t high_limb, low_limb;  register unsigned sh_1, sh_2;  register mp_size_t i;  mp_limb_t retval;#ifdef DEBUG  if (usize == 0 || cnt == 0)    abort ();#endif  sh_1 = cnt;#if 0  if (sh_1 == 0)    {      if (wp != up)	{	  /* Copy from low end to high end, to allow specified input/output	     overlapping.  */	  for (i = 0; i < usize; i++)	    wp[i] = up[i];	}      return 0;    }#endif  wp -= 1;  sh_2 = BITS_PER_MP_LIMB - sh_1;  high_limb = up[0];  retval = high_limb << sh_2;  low_limb = high_limb;  for (i = 1; i < usize; i++)    {      high_limb = up[i];      wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);      low_limb = high_limb;    }  low_limb >>= sh_1;  wp[i] = low_limb;  return retval;}#ifndef CNT#define CNT 4#endifmain (argc, argv)     int argc;     char **argv;{  mp_limb_t s1[SIZE];  mp_limb_t dx[SIZE+2];  mp_limb_t dy[SIZE+2];  mp_limb_t cyx, cyy;  int i;  long t0, t;  int test;  int cnt = CNT;  mp_size_t size;  for (test = 0; ; test++)    {#if TIMES == 1 && ! defined (PRINT)      if (test % (SIZE > 10000 ? 1 : 10000 / SIZE) == 0)	{	  printf ("\r%d", test);	  fflush (stdout);	}#endif#if TIMES == 1      cnt = random () % (BITS_PER_MP_LIMB - 1) + 1;#endif#ifdef RANDOM      size = random () % SIZE + 1;#else      size = SIZE;#endif      mpn_random2 (s1, size);      dx[size+1] = 0x12345678;      dy[size+1] = 0x12345678;      dx[0] = 0x87654321;      dy[0] = 0x87654321;#if TIMES != 1      mpn_random (s1, size);#ifndef NOCHECK      t0 = cputime();      for (i = 0; i < TIMES; i++)	refmpn_rshift (dx+1, s1, size, cnt);      t = cputime() - t0;      printf ("refmpn_rshift: %5ldms (%.2f cycles/limb)\n",	      t, ((double) t * CLOCK) / (OPS * 1000.0));#endif      t0 = cputime();      for (i = 0; i < TIMES; i++)	mpn_rshift (dx+1, s1, size, cnt);      t = cputime() - t0;      printf ("mpn_rshift:    %5ldms (%.2f cycles/limb)\n",	      t, ((double) t * CLOCK) / (OPS * 1000.0));#endif#ifndef NOCHECK      mpn_random2 (s1, size);#ifdef PRINT      printf ("%-*d ", (int) (2 * sizeof(mp_limb_t)), cnt); mpn_print (s1, size);#endif      /* Put garbage in the destination.  */      for (i = 0; i < size; i++)	{	  dx[i+1] = 0xdead;	  dy[i+1] = 0xbeef;	}      cyx = refmpn_rshift (dx+1, s1, size, cnt);      cyy = mpn_rshift (dy+1, s1, size, cnt);#ifdef PRINT      printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);      mpn_print (dx+1, size);      printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);      mpn_print (dy+1, size);#endif      if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0	  || dx[0] != 0x87654321 || dx[size+1] != 0x12345678)	{#ifndef PRINT	  printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);	  mpn_print (dx+1, size);	  printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);	  mpn_print (dy+1, size);#endif	  printf ("\n");	  if (dy[0] != 0x87654321)	    printf ("clobbered at low end\n");	  if (dy[size+1] != 0x12345678)	    printf ("clobbered at high end\n");	  printf ("TEST NUMBER %u\n", test);	  abort();	}#endif    }}mpn_print (mp_ptr p, mp_size_t size){  mp_size_t i;  for (i = size - 1; i >= 0; i--)    {#ifdef _LONG_LONG_LIMB      printf ("%0*lX%0*lX", (int) (sizeof(mp_limb_t)),	      (unsigned long) (p[i] >> (BITS_PER_MP_LIMB/2)),              (int) (sizeof(mp_limb_t)), (unsigned long) (p[i]));#else      printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);#endif#ifdef SPACE      if (i != 0)	printf (" ");#endif    }  puts ("");}