C / C++ / MFC

int i=3;
double d=(double)i;

An RK value is an encoded integer or floating-point value. 
RK values have a size of 4 bytes and are used to decrease file size for floating-point values. 
If bit 1 is cleared, the encoded value represents the 30 most significant bits of an IEEE 754 
floating-pointvalue (64-bit double precision). The 34 least significant bits must be set 
to zero. If bit 1 is set, the encoded valuerepresents a signed 30-bit integervalue. To get 
the correct integer,the encoded value has to beshifted right arithmeticaly by 2 bits. If bit0 
is set, the decoded value(both integer and floating-point)must be divided by 100 to get thefinal 
result.

int code; //Set this to your 32 bit code
__int64 temp=(code & 0xFFFFFFFD); //Mask the lowest two bits of the code
temp << 32; // Shift the code 32 bits to the left
double* pFloat = (double *)temp; 
double ans = *pFloat;
if (code & 1) ans /= 100.0;

rk <<= 2;
__int64 *buf = new __int64;
*buf = rk;
*buf <<= 32;
double* dub = (double *)buf;
val = *dub;

int i=3;
double d = i;

Michael Dunn wrote:

FYI this belongs in the C# forum[^]