Converts an integer to a binary/octal/hexadecimal number.

```
intToBin(x)
intToOct(x)
intToHex(x)
```

x

A `numeric`

vector of integers to be converted.

Returns a `character`

string of length `length(x)`

.
For coercions out of range, `NA_character_`

is returned for
such elements.

For `length(x)`

> 1, the number of characters in each of returned
elements is the same and driven by the `x`

element that requires
the highest number of character - all other elements are padded with
zeros (or ones for negative values). This is why we for instance get
`intToHex(15) == "f"`

but `intToHex(15:16) == c("0f", "10")`

.

The supported range for `intToHex()`

, `intToOct()`

, and
`intToBin()`

is that of R integers, i.e.
`[-.Machine$integer.max, +.Machine$integer.max]`

where.
`.Machine$integer.max`

is \(2^31-1\).
This limitation is there such that negative values can be converted too.