Coercing to bit

Description

Coercing to bit vector

Usage

as.bit(x, ...)
## S3 method for class 'bit'
as.bit(x, ...)
## S3 method for class 'logical'
as.bit(x, ...)
## S3 method for class 'integer'
as.bit(x, ...)
## S3 method for class 'bitwhich'
as.bit(x, ...)
## S3 method for class 'which'
as.bit(x, length, ...)
## S3 method for class 'ri'
as.bit(x, ...)

Arguments

Details

Coercing to bit is quite fast because we use a double loop that fixes each word in a processor register

Value

is.bit returns FALSE or TRUE, as.bit returns a vector of class 'bit'

Note

Zero is coerced to FALSE, all other numbers including NA are coerced to TRUE. This differs from the NA-to-FALSE coercion in package ff and may change in the future.

Author(s)

Jens Oehlschl<c3><a4>gel

See Also

bit, as.logical

Examples

  x <- as.bit(c(FALSE, NA, TRUE))
  as.bit(x)
  as.bit.which(c(1,3,4), 12)

Results