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

An exception thrown when suitable seed‐material cannot be derived.

== Synopsis

Declared in `<absl/random/seed_gen_exception.h>`

[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‐material for constructing a bit generator conforming to [rand.req.urng]entropy cannot be read from `/dev/urandom` on a Unix‐based system).

== Base Classes

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

== Member Functions

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



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