A transparent wrapper that carries an error policy for domain constraint enforcement.

Synopsis

Declared in <mp‐units/constrained.h>

template<
    typename T,
    ConstraintPolicy ErrorPolicy = throw_policy>
class constrained;

Description

This wrapper does not check anything itself. It serves as a signal to the mp‐units library that domain constraint violations should be reported via the ErrorPolicy rather than through precondition checks.

All arithmetic operations are forwarded to the underlying type T.

Types

Name

error_policy

value_type

Member Functions

Name

Description

constrained [constructor]

Constructors

operator%=

Modulus assignment operator

operator*=

Multiplication assignment operator

operator++

Increment operators

operator+=

Addition assignment operator

operator‐‐

Decrement operators

operator‐=

Subtraction assignment operator

operator/=

Division assignment operator

value

operator T

Conversion to T

Data Members

Name

value_

Friends

Name Description

mp_units::operator‐

Unary minus operator

mp_units::operator+

Unary plus operator

Template Parameters

Name Description

T

the underlying representation type

ErrorPolicy

policy type satisfying ConstraintPolicy (provides static on_constraint_violation(std::string_view))

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