First commit

src/bitconverter.cpp

@@ -0,0 +1,85 @@
+#include "CrossLang.hpp"
+
+namespace Tesses::CrossLang
+{
+    double BitConverter::ToDoubleBits(uint64_t v)
+    {
+        return *(double*)&v;
+    }
+    uint64_t BitConverter::ToUintBits(double v)
+    {
+        return *(uint64_t*)&v;
+    }
+    double BitConverter::ToDoubleBE(uint8_t& b)
+    {
+        return ToDoubleBits(ToUint64BE(b));
+    }
+    uint64_t BitConverter::ToUint64BE(uint8_t& b)
+    {
+        uint8_t* b2 = &b;
+        uint64_t v = 0;
+        v |= ((uint64_t)b2[0] << 56);
+        v |= ((uint64_t)b2[1] << 48);
+        v |= ((uint64_t)b2[2] << 40);
+        v |= ((uint64_t)b2[3] << 32);
+        v |= ((uint64_t)b2[4] << 24);
+        v |= ((uint64_t)b2[5] << 16);
+        v |= ((uint64_t)b2[6] << 8);
+        v |= (uint64_t)b2[7];
+        return v;
+    }
+    uint32_t BitConverter::ToUint32BE(uint8_t& b)
+    {
+        uint8_t* b2 = &b;
+        uint32_t v = 0;
+       
+        v |= ((uint32_t)b2[0] << 24);
+        v |= ((uint32_t)b2[1] << 16);
+        v |= ((uint32_t)b2[2] << 8);
+        v |= (uint32_t)b2[3];
+        return v;
+    }
+    uint16_t BitConverter::ToUint16BE(uint8_t& b)
+    {
+        uint8_t* b2 = &b;
+        uint16_t v = 0;
+       
+        
+        v |= ((uint16_t)b2[0] << 8);
+        v |= (uint16_t)b2[1];
+        return v;
+    }
+    void BitConverter::FromDoubleBE(uint8_t& b, double v)
+    {
+        FromUint64BE(b,ToUintBits(v));
+    }
+    void BitConverter::FromUint64BE(uint8_t& b, uint64_t v)
+    {
+        uint8_t* b2 = &b;
+        b2[0] = (uint8_t)(v >> 56);
+        b2[1] = (uint8_t)(v >> 48);
+        b2[2] = (uint8_t)(v >> 40);
+        b2[3] = (uint8_t)(v >> 32);
+        b2[4] = (uint8_t)(v >> 24);
+        b2[5] = (uint8_t)(v >> 16);
+        b2[6] = (uint8_t)(v >> 8);
+        b2[7] = (uint8_t)v;
+    }
+    void BitConverter::FromUint32BE(uint8_t& b, uint32_t v)
+    {
+        uint8_t* b2 = &b;
+        
+        b2[0] = (uint8_t)(v >> 24);
+        b2[1] = (uint8_t)(v >> 16);
+        b2[2] = (uint8_t)(v >> 8);
+        b2[3] = (uint8_t)v;
+    }
+    void BitConverter::FromUint16BE(uint8_t& b, uint16_t v)
+    {
+        uint8_t* b2 = &b;
+        
+        b2[0] = (uint8_t)(v >> 8);
+        b2[1] = (uint8_t)v;
+    }
+
+};