spielwiese
Last change
on this file since 33a041 was
2cfffe,
checked in by Hans Schönemann <hannes@…>, 21 years ago
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This commit was generated by cvs2svn to compensate for changes in r6316,
which included commits to RCS files with non-trunk default branches.
git-svn-id: file:///usr/local/Singular/svn/trunk@6317 2c84dea3-7e68-4137-9b89-c4e89433aadc
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Property mode set to
100644
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File size:
1.2 KB
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1 | |
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2 | |
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3 | #include <NTL/config.h> |
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4 | |
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5 | #include <stdlib.h> |
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6 | #include <stdio.h> |
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7 | |
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8 | #if (defined(__cplusplus) && !defined(NTL_CXX_ONLY)) |
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9 | extern "C" double _ntl_GetTime(); |
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10 | #else |
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11 | extern double _ntl_GetTime(); |
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12 | #endif |
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13 | |
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14 | /* Assuming the processor speed is at most 200GHz, and that |
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15 | * the clock resolution is at least 1 millisecond, the following |
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16 | * code should correctly determine if the GetTime function |
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17 | * is working properly, and should not run for more than |
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18 | * a few seconds on a machine with a speed of at least 100MHz. |
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19 | */ |
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20 | |
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21 | #define LOOP_COUNT (400) |
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22 | |
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23 | int main(int argc, char **argv) |
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24 | { |
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25 | long a, x, n, m; |
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26 | long i, j, k; |
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27 | double t0, t1; |
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28 | |
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29 | fprintf(stderr, "running"); |
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30 | |
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31 | x = atol(argv[1]); /* = 1 */ |
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32 | |
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33 | n = atol(argv[2]); /* = 1048576 = 2^20 */ |
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34 | |
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35 | m = atol(argv[3]); /* = 1048575 = 2^20 - 1 */ |
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36 | |
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37 | k = -1; |
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38 | t0 = _ntl_GetTime(); |
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39 | |
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40 | a = 1; |
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41 | |
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42 | for (i = 1; i <= LOOP_COUNT; i++) { |
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43 | for (j = 0; j < n; j++) |
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44 | a = (a + x) & m; |
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45 | |
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46 | if (a == 17) return -2; /* keeps the compiler honest! */ |
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47 | |
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48 | t1 = _ntl_GetTime(); |
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49 | if (t1 > t0) { fprintf(stderr, "\n"); return 0; } |
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50 | |
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51 | if ((i % 10) == 0) { |
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52 | fprintf(stderr, "."); |
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53 | } |
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54 | } |
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55 | |
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56 | fprintf(stderr, "\n"); |
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57 | return -1; |
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58 | } |
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