static void normalizedBoundaries ( long d64 , DiyFp m_minus , DiyFp m_plus ) { DiyFp v = asDiyFp ( d64 ) ; boolean significand_is_zero = ( v . f ( ) == kHiddenBit ) ; m_plus . setF ( ( v . f ( ) << 1 ) + 1 ) ; m_plus . setE ( v . e ( ) - 1 ) ; m_plus . normalize ( ) ; if ( significand_is_zero && v . e ( ) != kDenormalExponent ) { // The boundary is closer. Think of v = 1000e10 and v- = 9999e9. // Then the boundary (== (v - v-)/2) is not just at a distance of 1e9 but // at a distance of 1e8. // The only exception is for the smallest normal: the largest denormal is // at the same distance as its successor. // Note: denormals have the same exponent as the smallest normals. m_minus . setF ( ( v . f ( ) << 2 ) - 1 ) ; m_minus . setE ( v . e ( ) - 2 ) ; } else { m_minus . setF ( ( v . f ( ) << 1 ) - 1 ) ; m_minus . setE ( v . e ( ) - 1 ) ; } m_minus . setF ( m_minus . f ( ) << ( m_minus . e ( ) - m_plus . e ( ) ) ) ; m_minus . setE ( m_plus . e ( ) ) ; }
exponent as m_plus .