BitCount

BitCount(x, which)

Counts the number of 1 bits in the 64-bit integer portion of «x».

The optional «which» parameter can be one of the following text values

'-0' : Trailing (least significant) zero bits.

'-1' : Trailing 1s

'0-' : Leading (most significant) 0s.

'1-' : Leading 1s

Examples

BitCount(0) → 0

BitCount(13) → 3 { note: 13 = 0b1101 }

Negative numbers are in 64-bit two's complement form, so that

BitCount(-1) → 64

BitCount(0b1101010000, which: '-0') → 4

BitCount(0b1101010000, which: '0-') → 54

BitCount(0b1101010000, which: '-1') → 0

BitCount(0b1101011111, which: '-0') → 5

BitCount(-256, which: '1-') → 56

History

Introduced in Analytica 5.0.

See Also

• BitAnd
• BitOr
• BitNot
• BitXOr
• BitShift