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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: }