[#BloombergLP-bsls-AtomicOperations-testAndSwapInt]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsls.adoc[bsls]::xref:BloombergLP/bsls/AtomicOperations.adoc[AtomicOperations]::testAndSwapInt
:relfileprefix: ../../../
:mrdocs:

Conditionally set the value of the specified `atomicInt` to the specified `swapValue` if and only if the value of `atomicInt` equals the value of the specified `compareValue`, and return the initial value of `atomicInt`, providing the sequential consistency memory ordering guarantee. The whole operation is performed atomically.

== Synopsis

Declared in `<bsls_atomicoperations.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
testAndSwapInt(
    xref:BloombergLP/bsls/Atomic_TypeTraits-0b/Int.adoc[AtomicTypes::Int]* atomicInt,
    int compareValue,
    int swapValue);
----


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