[#BloombergLP-bdlb-HashUtil-hash1-0b]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/HashUtil.adoc[HashUtil]::hash1
:relfileprefix: ../../../
:mrdocs:

Return a portable 32‐bit hash value for the specified `key`.

== Synopsis

Declared in `<bdlb_hashutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
unsigned int
hash1(char key);
----

== Description

Return an unsigned integer hash value corresponding to the specified `key`. Note that the return value is seemingly random (i.e., the hash is good) but identical on all platforms (irrespective of endianness). Both functions `hash1` and `hash2` return a hash, but both hashes can be assumed to be independent (i.e., there are no known correlations between the results of both hash functions given the same input data).

== Return Value

portable 32‐bit hash value for `key`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| value to hash
|===


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