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

BsrWord

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

Declaration

Source position: systemh.inc line 1099

function BsrWord(

  const AValue: Word

):Cardinal;

Description

BsrWord scans the word AValue, starting at the leftmost position and working towards position 0, 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

BsrByte

  

Return the position of the leftmost 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

BsrQWord

  

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


Documentation generated on: May 14 2021