Metafunction yielding whether integral t_TYPE is signed.

Synopsis

Declared in <bdljsn_numberutil.h>

template<class t_TYPE>
struct NumberUtil_IsSigned
    : bsl::integral_constant<bool, (t_TYPE(‐1) < t_TYPE(0))>

Description

This class will be a bsl::true_type if the specified (template parameter type) t_TYPE is a signed type, and bsl::false_type otherwise. t_TYPE shall be an integral type. Note that currently bsl::is_signed is not available for C++03 platforms.

Base Classes

Name

Description

bsl::integral_constant<bool, (t_TYPE(‐1) < t_TYPE(0))>

Metafunction representing a compile‐time constant of the specified (template parameter) t_TYPE with the specified (template parameter) t_VALUE.

Type Aliases

Name

Description

type

Alias for this integral_constant specialization.

value_type

Alias for the (template parameter) t_TYPE.

Member Functions

Name

Description

operator()

Return a copy of the template argument t_VALUE.

operator t_TYPE

Return a copy of the template argument t_VALUE.

Static Data Members

Name

Description

value

The compile‐time constant value of this metafunction.

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