# is_big_integer · FT4 Rell API · Chromia Docs (concept)

> function is_ big_ integer(gtv: gtv): boolean Used to check if a gtv value is encoding a big_integer Parameters gtv — the value to check

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.utils/is_big_integer/

FUNCTION

# is\_big\_integer

```signature
function is_big_integer(gtv: gtv): boolean
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/utils/utils.rell#lines-267)

Used to check if a gtv value is encoding a `big_integer`

**Parameters**

* **gtv** — the value to check

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.utils/is_big_integer.html)Generated API reference, mirrored from the live docs