question: public static int round ( final float x ) { final int bits = Float . floatToRawIntBits ( x ) ; final int biasedExp = ( bits > > 23 ) & 0xff ; final int shift = ( 23 - 1 + Float . MAX_EXPONENT ) - biasedExp ; if ( ( shift & - 32 ) == 0 ) { int extendedMantissa = 0x00800000 | ( bits & 0x007fffff ) ; if ( bits < 0 ) { extendedMantissa = - extendedMantissa ; } return ( ( extendedMantissa > > shift ) + 1 ) > > 1 ; } else { return ( int ) x ; } }
target:  Get the closest int to x.