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36 lines
796 B
C++
36 lines
796 B
C++
#include "conv.h"
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#include <cstring>// for memcpy
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namespace xiv::utils::conv
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{
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float half2float( const uint16_t i_value )
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{
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uint32_t t1;
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uint32_t t2;
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uint32_t t3;
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t1 = i_value & 0x7fff; // Non-sign bits
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t2 = i_value & 0x8000; // Sign bit
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t3 = i_value & 0x7c00; // Exponent
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t1 <<= 13; // Align mantissa on MSB
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t2 <<= 16; // Shift sign bit into position
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t1 += 0x38000000; // Adjust bias
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t1 = ( t3 == 0 ? 0 : t1 );// Denormals-as-zero
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t1 |= t2; // Re-insert sign bit
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float result;
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memcpy( &result, &t1, sizeof( float ) );// Convert uint32_t to float using memcpy
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return result;
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}
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float ubyte2float( const uint8_t i_value )
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{
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return i_value / 255.0f;
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}
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}
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