# Function num_traits::pow::checked_pow [−] [src]

    pub fn checked_pow<T>(base: T, exp: usize) -> Option<T> where
        T: One + CheckedMul + Clone,

Raises a value to the power of exp, returning `None` if an overflow occurred.

Otherwise same as the `pow` function.

# Example

    use num_traits::checked_pow;

    assert_eq!(checked_pow(2i8, 4), Some(16));
    assert_eq!(checked_pow(7i8, 8), None);
    assert_eq!(checked_pow(7u32, 8), Some(5_764_801));

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)