public static final float float32Unpack(int x) {
                float mantissa = x & 0x1fffff;
                float e = (x & 0x7fe00000) >> 21;
                if ((x & 0x80000000) != 0) {
                        mantissa = -mantissa;
                }
                return mantissa * pow(2.0, e-788.0);
        }