BitCount

new to Analytica 4.7

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

See Also

• BitAnd
• BitOr
• BitNot
• BitXOr
• BitShift