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```{index} single: broot; Math::GMP function
```
```{index} single: Math::GMP::broot; Perl function
```

# broot

Return the integer `$n`-th root of `$x`, truncated toward zero.

## Synopsis

```perl
my $x = Math::GMP->new(100);
print $x->broot(3);            # 4, since 4**3 = 64 and 5**3 = 125
```

`$n` must be a positive integer. For odd `$n` negative values of
`$x` are fine; for even `$n` they croak inside `libgmp`.