> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/perl6-rosettacode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/perl6-rosettacode/programming_tasks/l/literals/floating_point.md).

# Floating point

Floating point numbers (the Num type) are written in the standard 'e' scientific notation:

```perl
2e2      # same as 200e0, 2e2, 200.0e0  and 2.0e2
6.02e23
-2e48
1e-9
1e0
```

A number like `3.1416` is specifically not floating point, but rational (the Rat type), equivalent to `3927/1250`. On the other hand, `Num(3.1416)` would be considered a floating literal though by virtue of mandatory constant folding.