[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'System' (#rtl)

BsfQWord

Return the position of the rightmost set bit in a 64-bit value

Declaration

Source position: systemh.inc line 1116

function BsfQWord(

  const AValue: QWord

):Cardinal;

Description

BsfQWord scans the QWord AValue, starting at position 0 (rightmost position) , and returns the index of the first set bit. The position is measured from the 0-th, rightmost bit.

When the input is 0, the result is 255 (unsigned equivalent of -1).

See also

BsfByte

  

Return the position of the rightmost set bit in an 8-bit value

BsfWord

  

Return the position of the rightmost set bit in a 16-bit value

BsfDWord

  

Return the position of the rightmost set bit in a 32-bit value

BsrQWord

  

Return the position of the leftmost set bit in a 64-bit value


Documentation generated on: May 14 2021