float latitude = 45.12345
 float longitude = 110.12345

 unsigned int packedLatitude  = (latitude + 90) * 100000     //25 bits
 unsigned int packedLongitude = (longitude + 180) * 100000   //26 bits

 float unpackedLatitude  = packedLatitude / 100000.0f - 90.0f
 float unpackedLongitude = packedLongitude / 100000.0f - 180.0f

float    val     = 234.323f;
uint32_t valB    = ((uint32_t*)(&val));
uint32_t signBit = valB >> 31;
uint32_t exp     = (valB >> 23) & 0xff;
uint32_t mant    = valB & 0x7FF;

uint32_t smallMant = mant>>2;
int32_t  realExp   = ((int32_t)exp) - 128;
uint32_t smallExp  = realExp + 32;

uint32 reducedData28 = (signBit << 27) | (smallExp << 21) | smallMant;

uint32_t truncate(float f){
    return f>>4;
}

float recover(uint32_t u){
    return u<<4;
}