checkNumber: Check if an argument is a single numeric value
In checkmate: Fast and Versatile Argument Checks

checkNumber

R Documentation

Check if an argument is a single numeric value

Description

Check if an argument is a single numeric value

Usage

checkNumber(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE
)

check_number(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE
)

assertNumber(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE,
  .var.name = vname(x),
  add = NULL
)

assert_number(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE,
  .var.name = vname(x),
  add = NULL
)

testNumber(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE
)

test_number(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE
)

expect_number(
  x,
  na.ok = FALSE,
  lower = -Inf,
  upper = Inf,
  finite = FALSE,
  null.ok = FALSE,
  info = NULL,
  label = vname(x)
)

Arguments

`x`	[any] Object to check.
`na.ok`	[`logical(1)`] Are missing values allowed? Default is `FALSE`.
`lower`	[`numeric(1)`] Lower value all elements of `x` must be greater than or equal to.
`upper`	[`numeric(1)`] Upper value all elements of `x` must be lower than or equal to.
`finite`	[`logical(1)`] Check for only finite values? Default is `FALSE`.
`null.ok`	[`logical(1)`] If set to `TRUE`, `x` may also be `NULL`. In this case only a type check of `x` is performed, all additional checks are disabled.
`.var.name`	[`character(1)`] Name of the checked object to print in assertions. Defaults to the heuristic implemented in `vname`.
`add`	[`AssertCollection`] Collection to store assertion messages. See `AssertCollection`.
`info`	[`character(1)`] Extra information to be included in the message for the testthat reporter. See `expect_that`.
`label`	[`character(1)`] Name of the checked object to print in messages. Defaults to the heuristic implemented in `vname`.

Details

This function does not distinguish between NA, NA_integer_, NA_real_, NA_complex_ NA_character_ and NaN.

Value

Depending on the function prefix: If the check is successful, the functions assertNumber/assert_number return x invisibly, whereas checkNumber/check_number and testNumber/test_number return TRUE. If the check is not successful, assertNumber/assert_number throws an error message, testNumber/test_number returns FALSE, and checkNumber/check_number return a string with the error message. The function expect_number always returns an expectation.