Trait FixedOptionalNum

pub trait FixedOptionalNum: Sealed { }

Expand description

This trait is used to provide supertraits to the Fixed trait depending on the crate’s optional features, and should not be used directly.

If the num-traits experimental feature is enabled, the following are supertraits of Fixed:

[Zero]
[Bounded]
[Inv]
[CheckedAdd], [CheckedSub], [CheckedNeg], [CheckedMul], [CheckedDiv], [CheckedRem], [CheckedShl], [CheckedShr]
[SaturatingAdd], [SaturatingSub], [SaturatingMul]
[WrappingAdd], [WrappingSub], [WrappingNeg], [WrappingMul], [WrappingShl], [WrappingShr]
[OverflowingAdd], [OverflowingSub], [OverflowingMul]
[ToPrimitive], [FromPrimitive]
[FloatConst]

The following are not supertraits of Fixed, even though they are implemented for fixed-point numbers where applicable:

ConstZero because of conflicts with Fixed::ZERO
One and ConstOne because not all fixed-point numbers can represent the value 1
Num because it has One as a supertrait
MulAdd, MulAddAssign because MulAdd::mul_add conflicts with Fixed::mul_add
ToBytes, FromBytes because of conflicts with Fixed::Bytes and Fixed methods

Similarly, Signed and Unsigned are not supertraits of FixedSigned and FixedUnsigned because they have Num as a supertrait.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.