Number Interfaces
These interfaces represent objects that contain individual numbers of some kind. NumberInterface is the base for this section, and all the other interfaces extend it.
Keep In Mind
Many places within this library code against the interfaces provided. Generally a value object should implement one of the composite interfaces, such as DecimalInterface, while a function which accepts an argument should require something like the SimpleNumberInterface.
If you implement your own value classes, you need to implement the appropriate interface to use it with the rest of this library. A value function should never implement only NumberInterface.
NumberInterface
abs(): SimpleNumberInterface
Applies the absolute value function to the current object and returns the object. Immutable objects will return a new instance that contains the absolute value, and mutable objects will apply the absolute value to the current instance.
absValue(): string
Applies the absolute value function to the current object and returns the result as a string. This will never alter the existing object.
add(int|float|numeric|NumberInterface $num): self
This adds the argument to the Value using the ArithmeticProvider or the native + operator depending on the calculation mode of the original object. For further information, see the section on Arithmetic.