[#llvm-set_subtract-0c]
= xref:llvm.adoc[llvm]::set_subtract
:relfileprefix: ../
:mrdocs:

set_subtract(A, B) ‐ Compute A := A ‐ B

== Synopsis

Declared in `<llvm/ADT/SetOperations.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class S1Ty,
    class S2Ty>
void
set_subtract(
    S1Ty& S1,
    S2Ty const& S2);
----

== Description

Selects the set to iterate based on the relative sizes of A and B for better efficiency.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *S1*
| Set from which elements of S2 are removed.
| *S2*
| Set of elements to remove from S1.
|===


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