Skip to content

    BsfDWord

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

    Declaration

    Source position: systemh.inc line 1250

    function BsfDWord(const AValue: DWord) : Cardinal;

    Description

    BsfDWord scans the DWord 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

    Name Description
    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.
    BsrDWord Return the position of the leftmost set bit in a 32-bit value.
    BsfQWord Return the position of the rightmost set bit in a 64-bit value.