Annotation of OpenXM_contrib/gmp/tests/devel/rshift.c, Revision 1.1.1.1
1.1 ohara 1: /*
2: Copyright 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
3:
4: This file is part of the GNU MP Library.
5:
6: The GNU MP Library is free software; you can redistribute it and/or modify
7: it under the terms of the GNU Lesser General Public License as published by
8: the Free Software Foundation; either version 2.1 of the License, or (at your
9: option) any later version.
10:
11: The GNU MP Library is distributed in the hope that it will be useful, but
12: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14: License for more details.
15:
16: You should have received a copy of the GNU Lesser General Public License
17: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
18: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
19: MA 02111-1307, USA.
20: */
21:
22: #include <stdio.h>
23: #include "gmp.h"
24: #include "gmp-impl.h"
25:
26: #if defined (USG) || defined (__SVR4) || defined (_UNICOS) || defined (__hpux)
27: #include <time.h>
28:
29: int
30: cputime ()
31: {
32: if (CLOCKS_PER_SEC < 100000)
33: return clock () * 1000 / CLOCKS_PER_SEC;
34: return clock () / (CLOCKS_PER_SEC / 1000);
35: }
36: #else
37: #include <sys/types.h>
38: #include <sys/time.h>
39: #include <sys/resource.h>
40:
41: int
42: cputime ()
43: {
44: struct rusage rus;
45:
46: getrusage (0, &rus);
47: return rus.ru_utime.tv_sec * 1000 + rus.ru_utime.tv_usec / 1000;
48: }
49: #endif
50:
51: #define M * 1000000
52:
53: #ifndef CLOCK
54: #error "Don't know CLOCK of your machine"
55: #endif
56:
57: #ifndef OPS
58: #define OPS (CLOCK/5)
59: #endif
60: #ifndef SIZE
61: #define SIZE 496
62: #endif
63: #ifndef TIMES
64: #define TIMES OPS/SIZE
65: #else
66: #undef OPS
67: #define OPS (SIZE*TIMES)
68: #endif
69:
70: mp_limb_t
71: refmpn_rshift (wp, up, usize, cnt)
72: register mp_ptr wp;
73: register mp_srcptr up;
74: mp_size_t usize;
75: register unsigned int cnt;
76: {
77: register mp_limb_t high_limb, low_limb;
78: register unsigned sh_1, sh_2;
79: register mp_size_t i;
80: mp_limb_t retval;
81:
82: #ifdef DEBUG
83: if (usize == 0 || cnt == 0)
84: abort ();
85: #endif
86:
87: sh_1 = cnt;
88: #if 0
89: if (sh_1 == 0)
90: {
91: if (wp != up)
92: {
93: /* Copy from low end to high end, to allow specified input/output
94: overlapping. */
95: for (i = 0; i < usize; i++)
96: wp[i] = up[i];
97: }
98: return 0;
99: }
100: #endif
101:
102: wp -= 1;
103: sh_2 = BITS_PER_MP_LIMB - sh_1;
104: high_limb = up[0];
105: retval = high_limb << sh_2;
106: low_limb = high_limb;
107:
108: for (i = 1; i < usize; i++)
109: {
110: high_limb = up[i];
111: wp[i] = (low_limb >> sh_1) | (high_limb << sh_2);
112: low_limb = high_limb;
113: }
114: low_limb >>= sh_1;
115: wp[i] = low_limb;
116:
117: return retval;
118: }
119:
120: #ifndef CNT
121: #define CNT 4
122: #endif
123:
124: main (argc, argv)
125: int argc;
126: char **argv;
127: {
128: mp_limb_t s1[SIZE];
129: mp_limb_t dx[SIZE+2];
130: mp_limb_t dy[SIZE+2];
131: mp_limb_t cyx, cyy;
132: int i;
133: long t0, t;
134: int test;
135: int cnt = CNT;
136: mp_size_t size;
137:
138: for (test = 0; ; test++)
139: {
140: #if TIMES == 1 && ! defined (PRINT)
141: if (test % (SIZE > 10000 ? 1 : 10000 / SIZE) == 0)
142: {
143: printf ("\r%d", test);
144: fflush (stdout);
145: }
146: #endif
147:
148: #if TIMES == 1
149: cnt = random () % (BITS_PER_MP_LIMB - 1) + 1;
150: #endif
151:
152: #ifdef RANDOM
153: size = random () % SIZE + 1;
154: #else
155: size = SIZE;
156: #endif
157: mpn_random2 (s1, size);
158:
159: dx[size+1] = 0x12345678;
160: dy[size+1] = 0x12345678;
161: dx[0] = 0x87654321;
162: dy[0] = 0x87654321;
163:
164: #if TIMES != 1
165: mpn_random (s1, size);
166:
167: #ifndef NOCHECK
168: t0 = cputime();
169: for (i = 0; i < TIMES; i++)
170: refmpn_rshift (dx+1, s1, size, cnt);
171: t = cputime() - t0;
172: printf ("refmpn_rshift: %5ldms (%.2f cycles/limb)\n",
173: t, ((double) t * CLOCK) / (OPS * 1000.0));
174: #endif
175:
176: t0 = cputime();
177: for (i = 0; i < TIMES; i++)
178: mpn_rshift (dx+1, s1, size, cnt);
179: t = cputime() - t0;
180: printf ("mpn_rshift: %5ldms (%.2f cycles/limb)\n",
181: t, ((double) t * CLOCK) / (OPS * 1000.0));
182: #endif
183:
184: #ifndef NOCHECK
185: mpn_random2 (s1, size);
186:
187: #ifdef PRINT
188: printf ("%-*d ", (int) (2 * sizeof(mp_limb_t)), cnt); mpn_print (s1, size);
189: #endif
190:
191: /* Put garbage in the destination. */
192: for (i = 0; i < size; i++)
193: {
194: dx[i+1] = 0xdead;
195: dy[i+1] = 0xbeef;
196: }
197:
198: cyx = refmpn_rshift (dx+1, s1, size, cnt);
199: cyy = mpn_rshift (dy+1, s1, size, cnt);
200: #ifdef PRINT
201: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
202: mpn_print (dx+1, size);
203: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
204: mpn_print (dy+1, size);
205: #endif
206: if (cyx != cyy || mpn_cmp (dx, dy, size+2) != 0
207: || dx[0] != 0x87654321 || dx[size+1] != 0x12345678)
208: {
209: #ifndef PRINT
210: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyx);
211: mpn_print (dx+1, size);
212: printf ("%*lX ", (int) (2 * sizeof(mp_limb_t)), cyy);
213: mpn_print (dy+1, size);
214: #endif
215: printf ("\n");
216: if (dy[0] != 0x87654321)
217: printf ("clobbered at low end\n");
218: if (dy[size+1] != 0x12345678)
219: printf ("clobbered at high end\n");
220: printf ("TEST NUMBER %u\n", test);
221: abort();
222: }
223: #endif
224: }
225: }
226:
227: mpn_print (mp_ptr p, mp_size_t size)
228: {
229: mp_size_t i;
230:
231: for (i = size - 1; i >= 0; i--)
232: {
233: #ifdef _LONG_LONG_LIMB
234: printf ("%0*lX%0*lX", (int) (sizeof(mp_limb_t)),
235: (unsigned long) (p[i] >> (BITS_PER_MP_LIMB/2)),
236: (int) (sizeof(mp_limb_t)), (unsigned long) (p[i]));
237: #else
238: printf ("%0*lX", (int) (2 * sizeof(mp_limb_t)), p[i]);
239: #endif
240: #ifdef SPACE
241: if (i != 0)
242: printf (" ");
243: #endif
244: }
245: puts ("");
246: }
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