db1val Interface

public interface db1val

1D evaluation routines.

Calls

interface~~db1val~~CallsGraph interface~db1val bspline_sub_module::db1val proc~db1val_alt bspline_sub_module::db1val_alt interface~db1val->proc~db1val_alt proc~db1val_default bspline_sub_module::db1val_default interface~db1val->proc~db1val_default proc~check_value bspline_sub_module::check_value proc~db1val_alt->proc~check_value proc~dbvalu bspline_sub_module::dbvalu proc~db1val_alt->proc~dbvalu proc~db1val_default->proc~check_value proc~db1val_default->proc~dbvalu proc~dintrv bspline_sub_module::dintrv proc~dbvalu->proc~dintrv proc~get_temp_x_for_extrap bspline_sub_module::get_temp_x_for_extrap proc~dintrv->proc~get_temp_x_for_extrap

Called by

interface~~db1val~~CalledByGraph interface~db1val bspline_sub_module::db1val proc~evaluate_1d bspline_oo_module::bspline_1d%evaluate_1d proc~evaluate_1d->interface~db1val

Module Procedures

private pure subroutine db1val_default(xval, idx, tx, nx, kx, bcoef, f, iflag, inbvx, w0, extrap)

Evaluates the tensor product piecewise polynomial interpolant constructed by the routine db1ink or one of its derivatives at the point xval.

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Arguments

Type IntentOptional Attributes Name
real(kind=wp), intent(in) :: xval

coordinate of evaluation point.
integer(kind=ip), intent(in) :: idx

derivative of piecewise polynomial to evaluate.
real(kind=wp), intent(in), dimension(nx+kx) :: tx

sequence of knots defining the piecewise polynomial in the direction. (same as in last call to db1ink)
integer(kind=ip), intent(in) :: nx

the number of interpolation points in . (same as in last call to db1ink)
integer(kind=ip), intent(in) :: kx

order of polynomial pieces in . (same as in last call to db1ink)
real(kind=wp), intent(in), dimension(nx) :: bcoef

the b-spline coefficients computed by db1ink.
real(kind=wp), intent(out) :: f

interpolated value
integer(kind=ip), intent(out) :: iflag

status flag:

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integer(kind=ip), intent(inout) :: inbvx

initialization parameter which must be set to 1 the first time this routine is called, and must not be changed by the user.
real(kind=wp), intent(inout), dimension(3_ip*kx) :: w0

work array
logical, intent(in), optional :: extrap

if extrapolation is allowed (if not present, default is False)

private pure subroutine db1val_alt(xval, idx, tx, nx, n, kx, bcoef, f, iflag, inbvx, w0, extrap)

Alternate version of db1val_default for use with db1ink_alt and db1ink_alt_2.

Arguments

Type IntentOptional Attributes Name
real(kind=wp), intent(in) :: xval

coordinate of evaluation point.
integer(kind=ip), intent(in) :: idx

derivative of piecewise polynomial to evaluate.
real(kind=wp), intent(in), dimension(n+kx) :: tx

sequence of knots defining the piecewise polynomial in the direction.
integer(kind=ip), intent(in) :: nx

the number of interpolation points in .
integer(kind=ip), intent(in) :: n

length of bcoef: nx+2
integer(kind=ip), intent(in) :: kx

order of polynomial pieces in . (same as in last call to db1ink)
real(kind=wp), intent(in), dimension(n) :: bcoef

the b-spline coefficients computed by db1ink.
real(kind=wp), intent(out) :: f

interpolated value
integer(kind=ip), intent(out) :: iflag

status flag:

Read more…
integer(kind=ip), intent(inout) :: inbvx

initialization parameter which must be set to 1 the first time this routine is called, and must not be changed by the user.
real(kind=wp), intent(inout), dimension(3_ip*kx) :: w0

work array
logical, intent(in), optional :: extrap

if extrapolation is allowed (if not present, default is False)