Trait funty::IsUnsigned[−][src]

pub trait IsUnsigned: IsInteger {
    fn is_power_of_two(self) -> bool;
    fn next_power_of_two(self) -> Self;
    fn checked_next_power_of_two(self) -> Option<Self>;
}

Declare that a type is an unsigned integer.

Required methods

`fn is_power_of_two(self) -> bool`[src]

Returns true if and only if self == 2^k for some k.

`fn next_power_of_two(self) -> Self`[src]

Returns the smallest power of two greater than or equal to self.

When return value overflows (i.e., self > (1 << (N-1)) for type uN), it panics in debug mode and return value is wrapped to 0 in release mode (the only situation in which method can return 0).

`fn checked_next_power_of_two(self) -> Option<Self>`[src]

Returns the smallest power of two greater than or equal to n. If the next power of two is greater than the type’s maximum value, None is returned, otherwise the power of two is wrapped in Some.

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