Wrapper of function object std::minus with special handling for bool. More...

#include <arithmetic.h>

Collaboration diagram for olb::util::minus< T >:

Public Member Functions
constexpr T	operator() (const T &lhs, const T &rhs) const

constexpr bool	operator() (const bool &lhs, const bool &rhs) const
	Operator specialization for boolean without operation.

Static Public Attributes
static const char	symbol = '-'
	symbol character for functor naming

Detailed Description

template<typename T>
struct olb::util::minus< T >

Wrapper of function object std::minus with special handling for bool.

Template Parameters

T	Domain of the substraction operation, without operation is performed for boolean inputs.

Note that specialization is not required for boolean union (add) and intersection (multiply) functors as their behavior is implicitly defined by the corresponding arithmetic operation on the integer representation.

Definition at line 44 of file arithmetic.h.

Member Function Documentation

◆ operator()() [1/2]

constexpr bool olb::util::minus< bool >::operator()	(	const bool &	lhs,
		const bool &	rhs ) const

constexpr

Operator specialization for boolean without operation.

i.e. implements what one reasonably expects to happen when substracting indicator functors.

Definition at line 60 of file arithmetic.h.

{
  return lhs && !rhs;
}

◆ operator()() [2/2]

template<typename T >

constexpr T olb::util::minus< T >::operator()	(	const T &	lhs,
		const T &	rhs ) const

inlineconstexpr

Definition at line 48 of file arithmetic.h.

  {
    return std::minus<T>()(lhs, rhs);
  }

Member Data Documentation

◆ symbol

template<typename T >

const char olb::util::minus< T >::symbol = '-'

static

symbol character for functor naming

Definition at line 46 of file arithmetic.h.

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

src/utilities/arithmetic.h