R: Double Precision Vectors

Double Precision Vectors

double(length = 0)
as.double(x)
is.double(x)

double creates a double precision vector of the specified length. The elements of the vector are all equal to 0.

as.double attempts to coerce its argument to be of double type.

is.double returns TRUE or FALSE depending on whether its argument is of double type or not.

R has no single precision data type. All real numbers are stored in double precision format.

is.double(1)
all(double(3) == 0)