utils::algorithms Namespace Reference

Functions
template<typename TV , typename TE , class = typename std::enable_if<std::is_convertible<TE,TV>::value>::type>
bool	is_in (const std::vector< TV > &vect, const TE &elem)
	Returns true if an item of type TE is in a vector of TV objects (provided that TE can be converted into TV), false otherwise. More...
template<typename TV , typename TE , class = typename std::enable_if<std::is_convertible<TE,TV>::value>::type>
bool	any_of_is_in (const std::vector< TV > &vect, const std::vector< TE > &elems)
	Returns true if any of the items of a vector<TE> is contained in another vector<TV> (provided that TE can be converted into TV) More...
template<typename T >
AMREX_GPU_DEVICE AMREX_FORCE_INLINE T	linear_interp (T x0, T x1, T f0, T f1, T x)
	Performs a linear interpolation. More...
template<typename T >
AMREX_GPU_DEVICE AMREX_FORCE_INLINE T	bilinear_interp (T x0, T x1, T y0, T y1, T f00, T f01, T f10, T f11, T x, T y)
	Performs a bilinear interpolation. More...
template<typename T >
AMREX_GPU_DEVICE AMREX_FORCE_INLINE T	trilinear_interp (T x0, T x1, T y0, T y1, T z0, T z1, T f000, T f001, T f010, T f011, T f100, T f101, T f110, T f111, T x, T y, T z)
	Performs a trilinear interpolation. More...
template<typename T >
AMREX_GPU_DEVICE AMREX_FORCE_INLINE const T *	upper_bound (const T *first, const T *last, const T &val)
	Returns a pointer to the first element in the range [first, last) that is greater than val. More...

Function Documentation

any_of_is_in()

template<typename TV , typename TE , class = typename std::enable_if<std::is_convertible<TE,TV>::value>::type>

bool utils::algorithms::any_of_is_in	(	const std::vector< TV > &	vect,
		const std::vector< TE > &	elems
	)

Returns true if any of the items of a vector<TE> is contained in another vector<TV> (provided that TE can be converted into TV)

Template Parameters

TV	the typename of the first vector elements
TV	the typename of the second vector elements

Parameters

vect	a vector of TV objects
elems	a vector of TE objects

Returns

true if any element of elems is in vect, false otherwise

bilinear_interp()

template<typename T >

AMREX_GPU_DEVICE AMREX_FORCE_INLINE T utils::algorithms::bilinear_interp	(	T	x0,
		T	x1,
		T	y0,
		T	y1,
		T	f00,
		T	f01,
		T	f10,
		T	f11,
		T	x,
		T	y
	)

Performs a bilinear interpolation.

Performs a bilinear interpolation at (x,y) given the 4 points (x0, y0, f00), (x0, y1, f01), (x1, y0, f10), (x1, y1, f11).

is_in()

template<typename TV , typename TE , class = typename std::enable_if<std::is_convertible<TE,TV>::value>::type>

bool utils::algorithms::is_in	(	const std::vector< TV > &	vect,
		const TE &	elem
	)

Returns true if an item of type TE is in a vector of TV objects (provided that TE can be converted into TV), false otherwise.

Template Parameters

TV	the typename of the vector elements
TE	the typename of the item

Parameters

vect	a vector of TV objects
elem	an object of type TE

Returns

true if elem is in vect, false otherwise

linear_interp()

template<typename T >

AMREX_GPU_DEVICE AMREX_FORCE_INLINE T utils::algorithms::linear_interp	(	T	x0,
		T	x1,
		T	f0,
		T	f1,
		T	x
	)

Performs a linear interpolation.

Performs a linear interpolation at x given the 2 points (x0, f0) and (x1, f1)

trilinear_interp()

template<typename T >

AMREX_GPU_DEVICE AMREX_FORCE_INLINE T utils::algorithms::trilinear_interp	(	T	x0,
		T	x1,
		T	y0,
		T	y1,
		T	z0,
		T	z1,
		T	f000,
		T	f001,
		T	f010,
		T	f011,
		T	f100,
		T	f101,
		T	f110,
		T	f111,
		T	x,
		T	y,
		T	z
	)

Performs a trilinear interpolation.

Performs a trilinear interpolation at (x,y,z) given the 8 points (x0, y0, z0, f000), (x0, y0, z1, f001), (x0, y1, z0, f010), (x0, y1, z1, f011), (x1, y0, z0, f100), (x1, y0, z1, f101), (x1, y1, z0, f110), (x1, y1, z1, f111)

upper_bound()

template<typename T >

AMREX_GPU_DEVICE AMREX_FORCE_INLINE const T* utils::algorithms::upper_bound	(	const T *	first,
		const T *	last,
		const T &	val
	)

Returns a pointer to the first element in the range [first, last) that is greater than val.

A re-implementation of the upper_bound algorithm suitable for GPU kernels.

Parameters

first	pointer to left limit of the range to consider
last	pointer to right limit of the range to consider
val	value to compare the elements of [first, last) to