| 1 | #define EXPAND_2_BRANCHES(i, x, y) BRANCH(i, x, y); BRANCH(i + 1, x, y); |
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| 2 | #define EXPAND_4_BRANCHES(i, x, y) EXPAND_2_BRANCHES(i, x, y) EXPAND_2_BRANCHES(i + 2, x, y) |
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| 3 | #define EXPAND_8_BRANCHES(i, x, y) EXPAND_4_BRANCHES(i, x, y) EXPAND_4_BRANCHES(i + 4, x, y) |
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| 4 | #define EXPAND_16_BRANCHES(i, x, y) EXPAND_8_BRANCHES(i, x, y) EXPAND_8_BRANCHES(i + 8, x, y) |
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| 5 | #define EXPAND_32_BRANCHES(i, x, y) EXPAND_16_BRANCHES(i, x, y) EXPAND_16_BRANCHES(i + 16, x, y) |
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| 6 | #define EXPAND_64_BRANCHES(i, x, y) EXPAND_32_BRANCHES(i, x, y) EXPAND_32_BRANCHES(i + 32, x, y) |
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| 7 | #define EXPAND_128_BRANCHES(i, x, y) EXPAND_64_BRANCHES(i, x, y) EXPAND_64_BRANCHES(i + 64, x, y) |
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| 8 | #define EXPAND_256_BRANCHES(i, x, y) EXPAND_128_BRANCHES(i, x, y) EXPAND_128_BRANCHES(i + 128, x, y) |
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| 9 | #define EXPAND_512_BRANCHES(i, x, y) EXPAND_256_BRANCHES(i, x, y) EXPAND_256_BRANCHES(i + 256, x, y) |
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| 10 | #define EXPAND_1024_BRANCHES(i, x, y) EXPAND_512_BRANCHES(i, x, y) EXPAND_512_BRANCHES(i + 512, x, y) |
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| 11 | #define EXPAND_2048_BRANCHES(i, x, y) EXPAND_1024_BRANCHES(i, x, y) EXPAND_1024_BRANCHES(i + 1024, x, y) |
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| 12 | #define EXPAND_4096_BRANCHES(i, x, y) EXPAND_2048_BRANCHES(i, x, y) EXPAND_2048_BRANCHES(i + 2048, x, y) |
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| 13 | |
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| 14 | unsigned cfg_long_chain_single_exit(unsigned x) { |
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| 15 | unsigned y = 0; |
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| 16 | #define BRANCH(i, x, y) if ((x % 13171) < i) { int var = x / 13171; y ^= var; } |
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| 17 | EXPAND_4096_BRANCHES(1, x, y); |
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| 18 | #undef BRANCH |
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| 19 | return y; |
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| 20 | } |
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| 21 | |
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