numbers::NumberTraits< std::complex< number > > Struct Template Reference

#include <deal.II/base/numbers.h>

Public Types
using	real_type = number

Static Public Member Functions
static constexpr std::complex< number >	conjugate (const std::complex< number > &x)
static constexpr real_type	abs_square (const std::complex< number > &x)
static real_type	abs (const std::complex< number > &x)

Static Public Attributes
static constexpr bool	is_complex = true

Detailed Description

template<typename number>
struct numbers::NumberTraits< std::complex< number > >

Specialization of the general NumberTraits class that provides the relevant information if the underlying data type is std::complex<T>.

Author

Wolfgang Bangerth, 2007

Definition at line 412 of file numbers.h.

Member Typedef Documentation

real_type

template<typename number >

using numbers::NumberTraits< std::complex< number > >::real_type = number

For this data type, alias the corresponding real type. Since this specialization of the template is selected for number types std::complex<T>, the real type is equal to the type used to store the two components of the complex number.

Definition at line 427 of file numbers.h.

Member Function Documentation

conjugate()

template<typename number >

constexpr std::complex< number > numbers::NumberTraits< std::complex< number > >::conjugate ( const std::complex< number > &  x )

staticconstexpr

Return the complex-conjugate of the given number.

Definition at line 544 of file numbers.h.

abs_square()

template<typename number >

constexpr NumberTraits< std::complex< number > >::real_type numbers::NumberTraits< std::complex< number > >::abs_square ( const std::complex< number > &  x )

staticconstexpr

Return the square of the absolute value of the given number. Since this specialization of the general template is chosen for types equal to std::complex, this function returns the product of a number and its complex conjugate.

Definition at line 562 of file numbers.h.

abs()

template<typename number >

NumberTraits< std::complex< number > >::real_type numbers::NumberTraits< std::complex< number > >::abs ( const std::complex< number > &  x )

static

Return the absolute value of a complex number.

Definition at line 553 of file numbers.h.

Member Data Documentation

is_complex

template<typename number >

constexpr bool numbers::NumberTraits< std::complex< number > >::is_complex = true

staticconstexpr

A flag that specifies whether the template type given to this class is complex or real. Since this specialization of the general template is selected for complex types, the answer is true.

Definition at line 419 of file numbers.h.

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The documentation for this struct was generated from the following files:

• deal.II/base/numbers.h
• /build/deal.ii-Kzz1m0/deal.ii-9.1.1/source/base/numbers.cc