Last change
on this file since 989 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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Rev | Line | |
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[536] | 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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