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Return the position of the leftmost set bit in a 64-bit value
Source position: systemh.inc line 1042
function BsrQWord( |
const AValue: QWord |
):Cardinal; |
BsfQWord scans the QWord 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).
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Return the position of the rightmost set bit in an 8-bit value |
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Return the position of the rightmost set bit in a 16-bit value |
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Return the position of the rightmost set bit in a 32-bit value |
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Return the position of the leftmost set bit in a 64-bit value |