Determines the location, i.e. index, of the (first) minimum or maximum of
a numeric (or logical) vector.

## Usage

```
which_min_gc(x, empty_NA = TRUE)
which_max_gc(x, empty_NA = TRUE)
```

## Arguments

- x
numeric (logical, integer, or double) vector or an `R`

object
for which the internal coercion to double works whose min or max
is searched for.

- empty_NA
logical, indicating if an empty value should be returned
as `NA`

(the default) or as `integer(0`

) (the
same as `which.min`

and `which.max`

).

## Value

If `empty_NA = FALSE`

, identical to `which.min`

or
`which.max`

If `empty_NA = TRUE`

, identical to `which.min`

or
`which.max`

except that, in cases where `which.min`

or
`which.max`

would return `integer(0)`

, `which_min_gc`

and
`which_max_gc`

return `NA`

## Details

These functions are wrappers for `which.min`

and `which.max`

,
with the additional argument `empty_NA`

.