62 lines
1.1 KiB
C++
62 lines
1.1 KiB
C++
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#include<hgl/math/HalfFloat.h>
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#include<iostream>
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#include<cstdlib>
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#include<cmath>
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using namespace hgl;
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using namespace std;
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static float origin_float[4];
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void InitFloat4()
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{
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//随机产生4个f32浮点数
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{
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srand(time(nullptr));
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uint8 *p=(uint8 *)origin_float;
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for(uint i=0;i<16;i++)
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p[i]=rand()%0xFF;
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}
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for(uint i=0;i<4;i++)
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{
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origin_float[i]=abs(origin_float[i]);
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}
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}
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void OutputFloat4(const char *hint,const float *f)
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{
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cout<<hint<<" float4: "<<f[0]<<","<<f[1]<<","<<f[2]<<","<<f[3]<<endl;
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}
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void OutputHalfFloat(const char *hint,const half_float *hf)
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{
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cout<<hint<<" half_float: "<<hf[0]<<","<<hf[1]<<","<<hf[2]<<","<<hf[3]<<endl;
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}
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void half_float_test()
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{
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OutputFloat4("origin",origin_float);
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half_float hf_fast[4];
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half_float hf_std[4];
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float_to_half(hf_fast,origin_float,4);
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Float32toFloat16(hf_std,origin_float,4);
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for(uint i=0;i<4;i++)
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hf_std[i]&=0x7FFF; //去掉符号位
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OutputHalfFloat("fast",hf_fast);
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OutputHalfFloat("std ",hf_std);
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}
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void main(int,char **)
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{
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InitFloat4();
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half_float_test();
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}
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