add!,minus!

Usage

add!(x, y)
minus!(x, y)
minus! x

Signatures

minus!:	% $\to$ %
add!, minus!:	(%, %) $\to$ %

Parameter	Type	Description
x, y	%	Elements of the type

Returns

add!($x,y$) and minus!($x,y$) returns respectively $x + y$ and $x - y$, while minus! x returns the opposite of $x$. In all cases, the storage used by x is allowed to be destroyed or reused, so x is lost after this call.

Remarks

Those functions may cause x to be destroyed, so do not use them unless x has been locally allocated, and is guaranteed not to share space with other elements. Some functions are not necessarily copying their arguments and can thus create memory aliases.

See Also

+,-