check_type_number: Check argument type (numbers)

In rlang: Functions for Base Types and Core R and 'Tidyverse' Features

Check argument type (numbers)

Description

These functions check that an argument is a number, optionally with bounds, and produce friendly error messages otherwise.

Usage

check_number_decimal(
  x,
  ...,
  min = NULL,
  max = NULL,
  allow_infinite = TRUE,
  allow_na = FALSE,
  allow_null = FALSE,
  arg = caller_arg(x),
  call = caller_env()
)

check_number_whole(
  x,
  ...,
  min = NULL,
  max = NULL,
  allow_infinite = FALSE,
  allow_na = FALSE,
  allow_null = FALSE,
  arg = caller_arg(x),
  call = caller_env()
)

Arguments

x	The argument to check.
...	Additional arguments passed to abort().
min	Minimum value (inclusive). If NULL, no lower bound is checked.
max	Maximum value (inclusive). If NULL, no upper bound is checked.
allow_infinite	Whether infinite values are allowed.
allow_na	Whether NA values are allowed.
allow_null	Whether NULL is allowed.
arg	An argument name as a string. This argument will be mentioned in error messages as the input that is at the origin of a problem.
call	The execution environment of a currently running function, e.g. caller_env(). The function will be mentioned in error messages as the source of the error. See the call argument of abort() for more information.

Value

NULL invisibly if the check passes, throws an error otherwise.

See Also

Other input checkers: check_data_frame(), check_type_scalar, stop_input_type()

Examples

check_number_decimal(3.14)
try(check_number_decimal("x"))

check_number_whole(42)
try(check_number_whole(3.5))

rlang documentation built on April 6, 2026, 5:07 p.m.