# decimal.signum · Rell standard library · Chromia Docs (concept)

> pure function signum(): integer Deprecated (for removal): Use 'sign' instead Returns the sign of this decimal: -1 if negative, 0 if zero, and 1 if positive

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/decimal/signum/

FUNCTION

# decimal.signum

```signature
pure function signum(): integer
```

**Deprecated** (for removal): Use 'sign' instead

Returns the sign of this decimal: `-1` if negative, `0` if zero, and `1` if positive.

It holds that for all `x`, `x == x.sign() * x.abs()`.

Since 0.9.1

**Alias of** [decimal.sign](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/decimal/sign/)

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/%5Broot%5D/decimal/signum.html)Generated API reference, mirrored from the live docs