[#BloombergLP-bdljsn-NumberUtil_IsSigned]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdljsn.adoc[bdljsn]::NumberUtil&lowbar;IsSigned
:relfileprefix: ../../
:mrdocs:

This class will be a `bsl&colon;&colon;true&lowbar;type` if the specified (template parameter type) `t&lowbar;TYPE` is a signed type, and `bsl&colon;&colon;false&lowbar;type` otherwise&period; `t&lowbar;TYPE` shall be an integral type&period; Note that currently bsl&colon;&colon;is&lowbar;signed is not available for C&plus;&plus;03 platforms&period;

== Synopsis

Declared in `&lt;bdljsn&lowbar;numberutil&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template&lt;class t&lowbar;TYPE&gt;
struct NumberUtil&lowbar;IsSigned
    : xref:bsl/integral_constant-02.adoc[bsl::integral&lowbar;constant&lt;bool, (t&lowbar;TYPE(&hyphen;1) &lt; t&lowbar;TYPE(0))&gt;]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:bsl/integral_constant-02.adoc[bsl::integral&lowbar;constant&lt;bool, (t&lowbar;TYPE(&hyphen;1) &lt; t&lowbar;TYPE(0))&gt;]`
| Metafunction representing a compile&hyphen;time constant of the specified (template parameter) `t&lowbar;TYPE` with the specified (template parameter) `t&lowbar;VALUE`&period;
|===

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:bsl/integral_constant-02/type.adoc[`type`] 
| Alias for this `integral&lowbar;constant` specialization&period;
| xref:bsl/integral_constant-02/value_type.adoc[`value&lowbar;type`] 
| 
|===


== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:bsl/integral_constant-02/operator_call.adoc[`operator()`] 
| Return a copy of the template argument `t&lowbar;VALUE`&period;
| xref:bsl/integral_constant-02/2conversion.adoc[`operator value&lowbar;type`] 
| 
|===


== Static Data Members

[cols="1"]
|===
| Name
| xref:bsl/integral_constant-02/value.adoc[`value`] 
|===



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