Last change
on this file since 571 was
536,
checked in by meunier, 11 years ago
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Added a tool which generates tests for the LL/SC table, in the soft/ directory.
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File size:
837 bytes
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Line | |
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1 | |
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2 | #ifndef _functions_h_ |
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3 | #define _functions_h_ |
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4 | |
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5 | #include <math.h> |
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6 | #include <stdlib.h> |
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7 | #include <stdio.h> |
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8 | |
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9 | static int mylog2(size_t v) { |
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10 | static const size_t b[] = { 0x2, 0xC, 0xF0, 0xFF00, 0xFFFF0000 }; |
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11 | static const size_t S[] = { 1, 2, 4, 8, 16 }; |
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12 | int i; |
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13 | register size_t r = 0; |
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14 | for (i = 4; i >= 0; i--) { |
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15 | if (v & b[i]) { |
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16 | v >>= S[i]; |
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17 | r |= S[i]; |
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18 | } |
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19 | } |
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20 | return r + 1; |
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21 | } |
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22 | |
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23 | /*int randint(int a,int b){ |
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24 | int range = b - a + 1; |
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25 | int length = (int) ceil(log2(range)); |
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26 | int mask = (int) pow(2,length) - 1; |
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27 | printf("mask : %d\n",mask); |
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28 | int res; |
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29 | do { |
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30 | res = rand() & mask; |
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31 | } |
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32 | while (res >= range); |
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33 | return (res + a); |
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34 | }*/ |
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35 | |
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36 | int randint(int a, int b){ |
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37 | int range = b - a + 1; |
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38 | int res = rand() % range; |
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39 | return res + a; |
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40 | } |
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41 | |
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42 | |
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43 | #endif |
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