[#llvm-TruncatedBLAKE3]
= xref:llvm.adoc[llvm]::TruncatedBLAKE3
:relfileprefix: ../
:mrdocs:

Like `BLAKE3` but using a class‐level template parameter for specifying the hash size of the `final()` and `result()` functions.

== Synopsis

Declared in `<llvm/Support/BLAKE3.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<size_t NumBytes>
class TruncatedBLAKE3
    : public xref:llvm/BLAKE3.adoc[BLAKE3]
----

== Description

This is useful for using BLAKE3 as the hasher type for `HashBuilder` with non‐default hash sizes.

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:llvm/BLAKE3.adoc[BLAKE3]`
| A class that wraps the BLAKE3 algorithm.
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/TruncatedBLAKE3/final-06.adoc[`final`] 
| `final` overloads
| xref:llvm/BLAKE3/init.adoc[`init`] 
| Reinitialize the internal state
| xref:llvm/BLAKE3/init_keyed.adoc[`init_keyed`] 
| Reinitialize the internal state with the given key.
| xref:llvm/TruncatedBLAKE3/result-04.adoc[`result`] 
| Return the current hash of the digested data since the last init().
| xref:llvm/BLAKE3/update-0a.adoc[`update`] 
| Digest more data.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:llvm/BLAKE3/hash.adoc[`hash`] 
| Returns a BLAKE3 hash for the given data.
|===



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