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26 lines
856 B
C++
26 lines
856 B
C++
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#include "popcount.h"
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static const uint8_t PopCountLUT8Impl[1 << 8] = {
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#define B2(n) n, n + 1, n + 1, n + 2
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#define B4(n) B2(n), B2(n + 1), B2(n + 1), B2(n + 2)
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#define B6(n) B4(n), B4(n + 1), B4(n + 1), B4(n + 2)
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B6(0), B6(1), B6(1), B6(2)};
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uint8_t const* PopCountLUT8 = PopCountLUT8Impl;
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#if !defined(_MSC_VER)
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//ICE here for msvc
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static const uint8_t PopCountLUT16Impl[1 << 16] = {
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#define B2(n) n, n + 1, n + 1, n + 2
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#define B4(n) B2(n), B2(n + 1), B2(n + 1), B2(n + 2)
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#define B6(n) B4(n), B4(n + 1), B4(n + 1), B4(n + 2)
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#define B8(n) B6(n), B6(n + 1), B6(n + 1), B6(n + 2)
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#define B10(n) B8(n), B8(n + 1), B8(n + 1), B8(n + 2)
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#define B12(n) B10(n), B10(n + 1), B10(n + 1), B10(n + 2)
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#define B14(n) B12(n), B12(n + 1), B12(n + 1), B12(n + 2)
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B14(0), B14(1), B14(1), B14(2)};
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uint8_t const* PopCountLUT16 = PopCountLUT16Impl;
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#endif
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