adjusted folder of examples.

datatype/HalfFloatTest.cpp

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+#include<hgl/math/HalfFloat.h>
+#include<iostream>
+#include<cstdlib>
+#include<cmath>
+
+using namespace hgl;
+using namespace std;
+
+static float origin_float[4];
+
+void InitFloat4()
+{
+    //随机产生4个f32浮点数
+    {
+        srand(time(nullptr));
+
+        uint8 *p=(uint8 *)origin_float;
+    
+        for(uint i=0;i<16;i++)
+            p[i]=rand()%0xFF;
+    }
+
+    for(uint i=0;i<4;i++)
+    {
+        origin_float[i]=abs(origin_float[i]);
+    }
+}
+
+void OutputFloat4(const char *hint,const float *f)
+{
+    cout<<hint<<" float4: "<<f[0]<<","<<f[1]<<","<<f[2]<<","<<f[3]<<endl;
+}
+
+void OutputHalfFloat(const char *hint,const half_float *hf)
+{
+    cout<<hint<<" half_float: "<<hf[0]<<","<<hf[1]<<","<<hf[2]<<","<<hf[3]<<endl;
+}
+
+void half_float_test()
+{
+    OutputFloat4("origin",origin_float);
+
+    half_float hf_fast[4];
+    half_float hf_std[4];
+
+    float_to_half(hf_fast,origin_float,4);
+    Float32toFloat16(hf_std,origin_float,4);
+
+    for(uint i=0;i<4;i++)
+        hf_std[i]&=0x7FFF;      //去掉符号位
+
+    OutputHalfFloat("fast",hf_fast);
+    OutputHalfFloat("std ",hf_std);
+}
+
+void split_float_test()
+{
+    bool sign_bit;
+    uint exponent;
+    uint mantissa;
+
+    float result;
+
+    for(uint i=0;i<4;i++)
+    {
+        SplitFloat32(sign_bit,exponent,mantissa,origin_float[i]);
+
+        result=MergeFloat32(sign_bit,exponent,mantissa);
+
+        cout<<"origin: "<<origin_float[i]<<" result: "<<result<<" sign_bit:"<<sign_bit<<" exponent:"<<exponent<<" mantissa:"<<mantissa<<endl;
+    }
+}
+
+void main(int,char **)
+{
+    InitFloat4();
+
+    half_float_test();
+
+    split_float_test();
+}