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Provide a compile-time check for floating-point types. More...
bsl::is_floating_point | meta-function for determining floating-point types |
bsl::is_floating_point_v | the result value of bsl::is_floating_point |
bsl::is_floating_point
and a template variable bsl::is_floating_point_v
, that represents the result value of the bsl::is_floating_point
meta-function, that may be used to query whether a type is a (possibly cv-qualified) floating-point type as defined in section 3.9.1.8 of the C++11 standard [basic.fundamental]. bsl::is_floating_point
meets the requirements of the is_floating_point
template defined in the C++11 standard [meta.unary.cat]. is_floating_point_v
is defined in the C++17 standard as an inline variable. If the current compiler supports the inline variable C++17 compiler feature, bsl::is_floating_point_v
is defined as an inline constexpr bool
variable. Otherwise, if the compiler supports the variable templates C++14 compiler feature, bsl::is_floating_point_v
is defined as a non-inline constexpr bool
variable. See BSLS_COMPILERFEATURES_SUPPORT_INLINE_VARIABLES
and BSLS_COMPILERFEATURES_SUPPORT_VARIABLE_TEMPLATES
macros in bsls_compilerfeatures component for details. typedef
s -- a floating-point type and a non-floating-point type: typedef void MyType; typedef float MyFloatingPointType;
bsl::is_floating_point
template for each of the typedef
s and assert the value
static data member of each instantiation: assert(false == bsl::is_floating_point<MyType>::value); assert(true == bsl::is_floating_point<MyFloatingPointType>::value);
#ifdef BSLS_COMPILERFEATURES_SUPPORT_VARIABLE_TEMPLATES assert(false == bsl::is_floating_point_v<MyType>); assert(true == bsl::is_floating_point_v<MyFloatingPointType>); #endif