ds4psy (version 0.4.0)

is.wholenumber: Test for whole numbers (i.e., integers).

Description

is.wholenumber tests if x contains only integer numbers.

Usage

is.wholenumber(x, tol = .Machine$double.eps^0.5)

Arguments

x

Number(s) to test (required, accepts numeric vectors).

tol

Numeric tolerance value. Default: tol = .Machine$double.eps^0.5 (see ?.Machine for details).

Details

is.wholenumber does what the base R function is.integer is not designed to do:

• is.wholenumber() returns TRUE or FALSE depending on whether its numeric argument x is an integer value (i.e., a "whole" number).

• is.integer() returns TRUE or FALSE depending on whether its argument is of integer type, and FALSE if its argument is a factor.

See the documentation of is.integer for definition and details.

See Also

is.integer function of the R base package.

Other utility functions: num_as_char(), num_as_ordinal()

Examples

# NOT RUN {
is.wholenumber(1)    # is TRUE
is.wholenumber(1/2)  # is FALSE
x <- seq(1, 2, by = 0.5)
is.wholenumber(x)

# Compare:
is.integer(1+2) 
is.wholenumber(1+2) 

# }