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@ -162,3 +162,23 @@ uint32 IntCbrt(uint64 num)
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return ((uint32) r1); /* floor(cbrt(x)); */
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}
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/**
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* Compress unsigned integer into 16 bits, in a way that increases dynamic range, at the expense of precision for large values
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*/
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uint16 RXCompressUint(uint32 num)
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{
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if (num <= 0x100) return num;
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if (num <= 0x7900) return 0x100 + ((num - 0x100) >> 3);
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return std::min<uint32>(UINT16_MAX, 0x1000 + ((num - 0x7900) >> 6));
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}
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/**
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* Inverse of RXCompressUint
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*/
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uint32 RXDecompressUint(uint16 num)
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{
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if (num > 0x1000) return ((num - 0x1000) << 6) + 0x7900;
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if (num > 0x100) return ((num - 0x100) << 3) + 0x100;
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return num;
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}
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