FeePerUnit

Tagged wrapper around FeeFrac to avoid unit confusion.

Synopsis

Declared in <util/feefrac.h>

template<typename Tag>
struct FeePerUnit
    : FeeFrac

Base Classes

Name

Description

FeeFrac

Data structure storing a fee and size.

Member Functions

Name

Description

operator=

Copy‐assign the fee and size from another FeeFrac.

EvaluateFee

Compute the fee for a given size at_size using this object's feerate.

EvaluateFeeDown

Compute the fee for a given size at_size using this object's feerate, rounding down.

EvaluateFeeUp

Compute the fee for a given size at_size using this object's feerate, rounding up.

IsEmpty

Check if this is empty (size and fee are 0).

operator+=

Add fee and size of another FeeFrac to this one.

operator‐=

Subtract fee and size of another FeeFrac from this one.

Static Member Functions

Name

Description

Div

Helper function for 96/32 signed division, rounding towards negative infinity (if round_down), or towards positive infinity (if !round_down). This is a version relying on __int128.

DivFallback

Helper function for 96/32 signed division, rounding towards negative infinity (if round_down) or positive infinity (if !round_down). This is a fallback version, separate so that it can be tested on platforms where it isn't actually needed.

FromFeeFrac

Convert a FeeFrac to a FeePerUnit.

Mul

Helper function for 32*64 signed multiplication, returning an unspecified but totally ordered type. This is a version relying on __int128.

MulFallback

Helper function for 32*64 signed multiplication, returning an unspecified but totally ordered type. This is a fallback version, separate so it can be tested on platforms where it isn't actually needed.