[#llvm-isLibFuncEmittable-04]
= xref:llvm.adoc[llvm]::isLibFuncEmittable
:relfileprefix: ../
:mrdocs:

Return true if a named library function is available and correctly typed.

== Synopsis

Declared in `<llvm/Transforms/Utils/BuildLibCalls.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
bool
isLibFuncEmittable(
    xref:llvm/Module.adoc[Module] const* M,
    xref:llvm/TargetLibraryInfo.adoc[TargetLibraryInfo] const* TLI,
    xref:llvm/StringRef.adoc[StringRef] Name);
----

== Return Value

True if the libcall is available and correctly typed.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *M*
| Module in which the function may already be declared.
| *TLI*
| Target library info describing available libcalls.
| *Name*
| Name of the library function to check.
|===


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