num_utilities::spline Interface Reference

Wrapper to the pspline library, making it easier to use for 1-D applications where speed is not the main priority. If spline representations are to be reused, manually use the library. More...

Public Member Functions
integer function	spline_real (x, y, xnew, ynew, ord, deriv, bcs, bcs_val, extrap)
	real version
integer function	spline_complex (x, y, xnew, ynew, ord, deriv, bcs, bcs_val, extrap)
	complex version

Detailed Description

Wrapper to the pspline library, making it easier to use for 1-D applications where speed is not the main priority. If spline representations are to be reused, manually use the library.

Order 1 (linear), 2 (akima hermite) or 3 (cubic) possible. Boundary conditions are possible:

• -1: periodic
• 0: not-a-knot
• 1: prescribe first derivative
• 2: prescribe second derivative

However, for order 2 boundary condition 2 is not available and for order 1 none of them.

Furthermore, derivatives can be specified:

• up to 1 for order 1 and 2
• up to 2 for order 3

Finally, extrapolation can be performed as well.

Returns

ierr

Definition at line 276 of file num_utilities.f90.

Member Function/Subroutine Documentation

spline_complex()

integer function num_utilities::spline::spline_complex	(	real(dp), dimension(:), intent(in)	x,
		complex(dp), dimension(:), intent(in)	y,
		real(dp), dimension(:), intent(in)	xnew,
		complex(dp), dimension(:), intent(out)	ynew,
		integer, intent(in), optional	ord,
		integer, intent(in), optional	deriv,
		integer, dimension(2), intent(in), optional	bcs,
		complex(dp), dimension(2), intent(in), optional	bcs_val,
		logical, intent(in), optional	extrap )

complex version

Parameters

[in]	x	coordinates
[in]	y	function value
[in]	xnew	new coordinates
[out]	ynew	new function values
[in]	ord	order [def 3]
[in]	deriv	derivative [def 0]
[in]	bcs	boundary conditions [def 0]
[in]	bcs_val	boundary conditions [no def]
[in]	extrap	whether extrapolation is allowed [def .false.]

Definition at line 2001 of file num_utilities.f90.

spline_real()

integer function num_utilities::spline::spline_real	(	real(dp), dimension(:), intent(in), target	x,
		real(dp), dimension(:), intent(in)	y,
		real(dp), dimension(:), intent(in), target	xnew,
		real(dp), dimension(:), intent(out)	ynew,
		integer, intent(in), optional	ord,
		integer, intent(in), optional	deriv,
		integer, dimension(2), intent(in), optional	bcs,
		real(dp), dimension(2), intent(in), optional	bcs_val,
		logical, intent(in), optional	extrap )

real version

Parameters

[in]	x	coordinates
[in]	y	function value
[in]	xnew	new coordinates
[out]	ynew	new function values
[in]	ord	order [def 3]
[in]	deriv	derivative [def 0]
[in]	bcs	boundary conditions [def 0]
[in]	bcs_val	boundary conditions [no def]
[in]	extrap	whether extrapolation is allowed [def .false.]

Definition at line 1674 of file num_utilities.f90.

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

• /Users/toonweyens/Code/PB3D/Modules/num_utilities.f90