[#absl-SeedGenException]
= xref:absl.adoc[absl]::SeedGenException
:relfileprefix: ../
:mrdocs:

An exception thrown when suitable seed&hyphen;material cannot be derived&period;

== Synopsis

Declared in `&lt;absl&sol;random&sol;seed&lowbar;gen&lowbar;exception&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class SeedGenException
    : public std::exception
----

== Description

This exception may be thrown if unpredictable events prevent the derivation of suitable seed&hyphen;material for constructing a bit generator conforming to &lsqb;rand&period;req&period;urng&rsqb;entropy cannot be read from `&sol;dev&sol;urandom` on a Unix&hyphen;based system)&period;

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `std::exception`
| Base class for all library exceptions&period;
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:absl/SeedGenException/2constructor.adoc[`SeedGenException`]         [.small]#[constructor]#
| Constructs the exception&period;
| xref:absl/SeedGenException/2destructor.adoc[`&#126;SeedGenException`] [.small]#[destructor]# [.small]#[virtual]#
| Destroys the exception&period;
| xref:absl/SeedGenException/operator_assign-09.adoc[`operator&equals;`] 
| Assignment operators
| xref:absl/SeedGenException/what.adoc[`what`]  [.small]#[virtual]#
| Returns an explanatory string&period;
|===



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