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annotate src/SbpOperators/boundaryops/boundary_restriction.jl @ 1085:d5a82a142d6a feature/scalar_times_tensor

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author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Sun, 08 May 2022 11:34:51 +0200
parents 7fc8df5157a7
children 157a78959e5d
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1 """
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2 boundary_restriction(grid, closure_stencil::Stencil, boundary)
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4 Creates boundary restriction operators `e` as `LazyTensor`s on `boundary`
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6 `e` is the restriction of a grid function to `boundary` using a `Stencil` `closure_stencil`.
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7 `e'` is the prolongation of a grid function on `boundary` to the whole grid using the same `closure_stencil`.
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8 On a one-dimensional `grid`, `e` is a `BoundaryOperator`. On a multi-dimensional `grid`, `e` is the inflation of
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9 a `BoundaryOperator`.
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11 See also: [`boundary_operator`](@ref).
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12 """
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13 function boundary_restriction(grid, closure_stencil, boundary)
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14 converted_stencil = convert(Stencil{eltype(grid)}, closure_stencil)
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15 return SbpOperators.boundary_operator(grid, converted_stencil, boundary)
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16 end
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18 """
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19 boundary_restriction(grid, stencil_set, boundary)
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21 Creates a `boundary_restriction` operator on `grid` given a `stencil_set`.
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22 """
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23 boundary_restriction(grid, stencil_set::StencilSet, boundary) = boundary_restriction(grid, parse_stencil(stencil_set["e"]["closure"]), boundary)