dot-to_num_from_complex: Coerce an object from a complex to a numeric class
In stbl: Stabilize Function Arguments

.to_num_from_complex

R Documentation

Coerce an object from a complex to a numeric class

A helper that wraps around a ⁠to_*()⁠ function to provide a standard way to coerce complex numbers.

.to_num_from_complex(
  x,
  cast_fn,
  to_type_obj,
  x_arg = caller_arg(x),
  call = caller_env(),
  x_class = object_type(x)
)

`x`	The argument to stabilize.
`cast_fn`	`⁠(function)⁠` The `⁠as.*()⁠` function to use for coercion.
`to_type_obj`	An empty object of the target type (e.g., `integer()`).
`x_arg`	`⁠(length-1 character)⁠` An argument name for x. The automatic value will work in most cases, or pass it through from higher-level functions to make error messages clearer in unexported functions.
`call`	`(environment)` The execution environment to mention as the source of error messages.
`x_class`	`⁠(length-1 character)⁠` The class name of `x` to use in error messages. Use this if you remove a special class from `x` before checking its coercion, but want the error message to match the original class.