Returns true if the scaling factor from from to to is an exact positive integer.

Synopsis

Declared in <mp‐units/framework/value_cast.h>

[[nodiscard]]
consteval
bool
is_integral_scaling(
    auto from,
    auto to);

Description

This is the key predicate used by the default implicitly_scalable to decide whether conversions between integer‐like representation types are non‐truncating (and therefore may be implicit). For example, m → mm has an integral factor (×1000), so integer conversions in that direction are implicit; mm → m has a fractional factor (÷1000), so they are explicit.

Return Value

true if the scaling factor from from to to is an exact positive integer

Note

The return value should not be discarded.

Parameters

Name

Description

from

source unit

to

target unit

Created with MrDocs