code: public static float decodeFloat(byte[] src, int srcOffset)
          throws CorruptEncodingException
      {
          int bits = decodeFloatBits(src, srcOffset);
          bits ^= (bits < 0) ? 0x80000000 : 0xffffffff;
          return Float.intBitsToFloat(bits);
      }
docs: Decodes a float from exactly 4 bytes.
  
  @param src source of encoded bytes
  @param srcOffset offset into source array
  @return float value