autopas::utils::ArrayMath Namespace Reference

Namespace to handle mathematical operations of std::array. More...

Functions
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	add (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Adds two arrays, returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	sub (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Subtracts array b from array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	min (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Takes elementwise minimum, returns the result.
template<class T , std::size_t SIZE>
constexpr bool	less (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	True iff for all d the following holds: a[d] < b[d].
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	max (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Takes elementwise maximum and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	mul (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Multiplies two array's element wise and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	div (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Divides two array's element-wise and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	addScalar (const std::array< T, SIZE > &a, T s)
	Adds a scalar s to each element of array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	subScalar (const std::array< T, SIZE > &a, T s)
	Subtracts a scalar s from each element of array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	mulScalar (const std::array< T, SIZE > &a, T s)
	Multiplies a scalar s to each element of array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	divScalar (const std::array< T, SIZE > &a, T s)
	Divides an array element-wise by a given scalar and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	divScalar (T s, const std::array< T, SIZE > &a)
	Divides a scalar with by every element of an array to create an array of fractions.
template<class T , std::size_t SIZE>
constexpr T	dot (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Generates the dot product of two arrays.
template<class T >
constexpr std::array< T, 3 >	cross (const std::array< T, 3 > &a, const std::array< T, 3 > &b)
	Generates the cross product of two arrays of 3 floats.
template<class T , std::size_t SIZE>
constexpr T	L2Norm (const std::array< T, SIZE > &a)
	Computes the L2Norm / Euclidean norm.
template<class T >
constexpr T::value_type	prod (const T &a)
	Computes the product of all elements in a.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	abs (const std::array< T, SIZE > &a)
	Computes the absolute value for all elements in a.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	normalize (const std::array< T, SIZE > &a)
	Generates a normalized array (|a| = 1).
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	ceil (const std::array< T, SIZE > &a)
	For each element in a, computes the smallest integer value not less than the element.
template<typename target_T = int, typename float_T , std::size_t SIZE>
constexpr std::array< target_T, SIZE >	floorAndCast (const std::array< float_T, SIZE > &a)
	Floors all array elements and converts them to a different type.
template<class target_T = int, class float_T , std::size_t SIZE>
constexpr std::array< target_T, SIZE >	ceilAndCast (const std::array< float_T, SIZE > &a)
	Ceils all array elements and converts them to a different type.
template<class T , std::size_t SIZE>
bool	isNearRel (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b, double maxRelativeDifference=1e-9)
	Returns true if arrays are elementwise relatively near each other.
template<class T , std::size_t SIZE>
bool	isNearRel (const std::vector< std::array< T, SIZE > > &a, const std::vector< std::array< T, SIZE > > &b, double maxRelativeDifference=1e-9)
	Returns true if vectors of arrays are elementwise relatively near each other.
template<class T >
bool	isEqual (const std::vector< T > &a, const std::vector< T > &b)
	Returns true if vectors are elementwise equal to each other.
template<typename new_T , typename old_T , std::size_t SIZE>
constexpr std::array< new_T, SIZE >	staticCastArray (const std::array< old_T, SIZE > &a)
	static_casts all elements of an array to a new type.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator+ (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Adds two arrays, returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator+= (std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Assignment operator to add two arrays.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator- (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Subtracts array b from array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator-= (std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Assignment operator to subtract two arrays.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator* (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Multiplies two array's element wise and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator*= (std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Assignment operator to multiply two arrays.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator/ (const std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Divides two array's element-wise and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator/ (const std::array< T, SIZE > &a, T b)
	Divides an array element-wise by a given scalar and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator/ (T a, const std::array< T, SIZE > &b)
	Divides a scalar by every element of an array to create an array of fractions.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator/= (std::array< T, SIZE > &a, const std::array< T, SIZE > &b)
	Assignment operator to divide two arrays.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator+ (const std::array< T, SIZE > &a, T s)
	Adds a scalar s to each element of array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator+= (std::array< T, SIZE > &a, T s)
	Assignment operator to add a scalar s to each element of array.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator- (const std::array< T, SIZE > &a, T s)
	Subtracts a scalar s from each element of array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator-= (std::array< T, SIZE > &a, T s)
	Assignment operator to subtract a scalar s to each element of array.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE >	operator* (const std::array< T, SIZE > &a, T s)
	Multiplies a scalar s to each element of array a and returns the result.
template<class T , std::size_t SIZE>
constexpr std::array< T, SIZE > &	operator*= (std::array< T, SIZE > &a, T s)
	Assignment operator to multiply a scalar s to each element of array.
template<class T , std::size_t SIZE>
double	boxDistanceSquared (const std::array< T, SIZE > &aMin, const std::array< T, SIZE > &aMax, const std::array< T, SIZE > &bMin, const std::array< T, SIZE > &bMax)
	Calculate the squared minimum distance between two boxes, which are aligned to the Cartesian grid.

Detailed Description

Namespace to handle mathematical operations of std::array.

Function Documentation

abs()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::abs ( const std::array< T, SIZE > &  a )

constexpr

Computes the absolute value for all elements in a.

Template Parameters

T	floating point type
SIZE	size of the array

Parameters

a	input array

Returns

absolute values of a

add()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::add ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Adds two arrays, returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	first summand
b	second summand

Returns

a + b

addScalar()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::addScalar ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Adds a scalar s to each element of array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be added to each element of a

Returns

array who's elements are a[i]+s

boxDistanceSquared()

template<class T , std::size_t SIZE>

double autopas::utils::ArrayMath::boxDistanceSquared	(	const std::array< T, SIZE > &	aMin,
		const std::array< T, SIZE > &	aMax,
		const std::array< T, SIZE > &	bMin,
		const std::array< T, SIZE > &	bMax
	)

Calculate the squared minimum distance between two boxes, which are aligned to the Cartesian grid.

The boxes are given by their lower and upper corners.

Parameters

aMin
aMax
bMin
bMax

Returns

squared minimum distance

ceil()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::ceil ( const std::array< T, SIZE > &  a )

constexpr

For each element in a, computes the smallest integer value not less than the element.

Template Parameters

T	floating point type
SIZE	size of the array

Parameters

a	input array

Returns

rounded up values of a

ceilAndCast()

template<class target_T = int, class float_T , std::size_t SIZE>

constexpr std::array< target_T, SIZE > autopas::utils::ArrayMath::ceilAndCast ( const std::array< float_T, SIZE > &  a )

constexpr

Ceils all array elements and converts them to a different type.

Useful to ceil array elements and cast them to some integer type.

Template Parameters

target_T	target type. By default int.
float_T	floating point type
SIZE	size of the array

Parameters

a	input array

Returns

New array with ceiled elements of new type.

cross()

template<class T >

constexpr std::array< T, 3 > autopas::utils::ArrayMath::cross ( const std::array< T, 3 > &  a, const std::array< T, 3 > &  b  )

constexpr

Generates the cross product of two arrays of 3 floats.

Template Parameters

T	floating point type

Parameters

a	3D vector (denoted by array of 3 floats)
b	3D vector (denoted by array of 3 floats)

Returns

cross product a x b

div()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::div ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Divides two array's element-wise and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
b	divisor.

Returns

element-wise quotient of a and b, i.e., result[i] = a[i]/b[i]

divScalar() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::divScalar ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Divides an array element-wise by a given scalar and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
s	divisor.

Returns

element-wise quotient of a and b, i.e., result[i] = a[i]/s

divScalar() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::divScalar ( T  s, const std::array< T, SIZE > &  a  )

constexpr

Divides a scalar with by every element of an array to create an array of fractions.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
s	divisor.

Returns

element-wise quotient of s and a, i.e., result[i] = s/a[i]

dot()

template<class T , std::size_t SIZE>

constexpr T autopas::utils::ArrayMath::dot ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Generates the dot product of two arrays.

Returns the sum of a[i]*b[i] summed over all i, where i is in [0, SIZE)

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	first array
b	second array

Returns

dot product of a and b

floorAndCast()

template<typename target_T = int, typename float_T , std::size_t SIZE>

constexpr std::array< target_T, SIZE > autopas::utils::ArrayMath::floorAndCast ( const std::array< float_T, SIZE > &  a )

constexpr

Floors all array elements and converts them to a different type.

Useful to floor array elements and cast them to some integer type.

Template Parameters

target_T	target type. By default int.
float_T	floating point type
SIZE	size of the array

Parameters

a	input array

Returns

New array with floored elements of new type.

isEqual()

template<class T >

bool autopas::utils::ArrayMath::isEqual	(	const std::vector< T > &	a,
		const std::vector< T > &	b
	)

Returns true if vectors are elementwise equal to each other.

Also returns false if vectors are of different sizes. Should only be used with an integer type.

Template Parameters

T	integer type

Parameters

a	input vector
b	input vector

Returns

isNearRel() [1/2]

template<class T , std::size_t SIZE>

bool autopas::utils::ArrayMath::isNearRel	(	const std::array< T, SIZE > &	a,
		const std::array< T, SIZE > &	b,
		double	maxRelativeDifference = 1e-9
	)

Returns true if arrays are elementwise relatively near each other.

Template Parameters

T	floating point type
SIZE	size of the array

Parameters

a	input array
b	input array
maxRelativeDifference

Returns

isNearRel() [2/2]

template<class T , std::size_t SIZE>

bool autopas::utils::ArrayMath::isNearRel	(	const std::vector< std::array< T, SIZE > > &	a,
		const std::vector< std::array< T, SIZE > > &	b,
		double	maxRelativeDifference = 1e-9
	)

Returns true if vectors of arrays are elementwise relatively near each other.

Also returns false if vectors are of different sizes.

Template Parameters

T	floating point type
SIZE	size of the array

Parameters

a	input vector of arrays
b	input vector of arrays
maxRelativeDifference

Returns

L2Norm()

template<class T , std::size_t SIZE>

constexpr T autopas::utils::ArrayMath::L2Norm ( const std::array< T, SIZE > &  a )

constexpr

Computes the L2Norm / Euclidean norm.

Template Parameters

T	floating point type
SIZE	size of the array

Parameters

a	input array

Returns

L2Norm

less()

template<class T , std::size_t SIZE>

constexpr bool autopas::utils::ArrayMath::less ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

True iff for all d the following holds: a[d] < b[d].

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	first parameter
b	second parameter

Returns

a < b

max()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::max ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Takes elementwise maximum and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

max(a, b)

min()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::min ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Takes elementwise minimum, returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	first parameter
b	second parameter

Returns

min(a, b)

mul()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::mul ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Multiplies two array's element wise and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

element-wise multiplication of a and b

mulScalar()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::mulScalar ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Multiplies a scalar s to each element of array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be multiplied to each element of a

Returns

array who's elements are a[i]*s

normalize()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::normalize ( const std::array< T, SIZE > &  a )

constexpr

Generates a normalized array (|a| = 1).

Template Parameters

T	floating point type
SIZE	size of the array

Parameters

a	input array

Returns

normalized array of a

operator*() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator* ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Multiplies two array's element wise and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

element-wise multiplication of a and b

operator*() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator* ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Multiplies a scalar s to each element of array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be multiplied to each element of a

Returns

array who's elements are a[i]*s

operator*=() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator*= ( std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Assignment operator to multiply two arrays.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

element-wise multiplication of a and b

operator*=() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator*= ( std::array< T, SIZE > &  a, T  s  )

constexpr

Assignment operator to multiply a scalar s to each element of array.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be multiplied to each element of a

Returns

array who's elements are a[i]*s

operator+() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator+ ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Adds two arrays, returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	first summand
b	second summand

Returns

a + b

operator+() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator+ ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Adds a scalar s to each element of array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be added to each element of a

Returns

array who's elements are a[i]+s

operator+=() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator+= ( std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Assignment operator to add two arrays.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	first summand
b	second summand

Returns

a + b

operator+=() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator+= ( std::array< T, SIZE > &  a, T  s  )

constexpr

Assignment operator to add a scalar s to each element of array.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be added to each element of a

Returns

array who's elements are a[i]+s

operator-() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator- ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Subtracts array b from array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

a - b

operator-() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator- ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Subtracts a scalar s from each element of array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be subtracted from each element of a

Returns

array who's elements are a[i]-s

operator-=() [1/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator-= ( std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Assignment operator to subtract two arrays.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

a - b

operator-=() [2/2]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator-= ( std::array< T, SIZE > &  a, T  s  )

constexpr

Assignment operator to subtract a scalar s to each element of array.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be subtracted from each element of a

Returns

array who's elements are a[i]-s

operator/() [1/3]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator/ ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Divides two array's element-wise and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
b	divisor.

Returns

element-wise quotient of a and b, i.e., result[i] = a[i]/b[i]

operator/() [2/3]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator/ ( const std::array< T, SIZE > &  a, T  b  )

constexpr

Divides an array element-wise by a given scalar and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
b	divisor.

Returns

element-wise quotient of a and b, i.e., result[i] = a[i]/b

operator/() [3/3]

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::literals::operator/ ( T  a, const std::array< T, SIZE > &  b  )

constexpr

Divides a scalar by every element of an array to create an array of fractions.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
b	divisor.

Returns

element-wise quotient of a and b, i.e., result[i] = a/b[i]

operator/=()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > & autopas::utils::ArrayMath::literals::operator/= ( std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Assignment operator to divide two arrays.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a	dividend.
b	divisor.

Returns

element-wise quotient of a and b, i.e., result[i] = a[i]/b[i]

prod()

template<class T >

constexpr T::value_type autopas::utils::ArrayMath::prod ( const T &  a )

constexpr

Computes the product of all elements in a.

Template Parameters

T	input array type, which fulfills the C++ container requirement

Parameters

a	input array

Returns

product

staticCastArray()

template<typename new_T , typename old_T , std::size_t SIZE>

constexpr std::array< new_T, SIZE > autopas::utils::ArrayMath::staticCastArray ( const std::array< old_T, SIZE > &  a )

constexpr

static_casts all elements of an array to a new type.

Template Parameters

new_T
old_T
SIZE

Parameters

a

Old Array

Returns

sub()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::sub ( const std::array< T, SIZE > &  a, const std::array< T, SIZE > &  b  )

constexpr

Subtracts array b from array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the arrays

Parameters

a
b

Returns

a - b

subScalar()

template<class T , std::size_t SIZE>

constexpr std::array< T, SIZE > autopas::utils::ArrayMath::subScalar ( const std::array< T, SIZE > &  a, T  s  )

constexpr

Subtracts a scalar s from each element of array a and returns the result.

Template Parameters

T	floating point type
SIZE	size of the array a

Parameters

a	the array
s	the scalar to be subtracted from each element of a

Returns

array who's elements are a[i]-s