Mercurial > repos > public > sbplib
diff +sbp/+implementations/intOpOP_orders_8to8_ratio2to1.m @ 927:4291731570bb feature/utux2D
Rename AWW OP. Make Interpolation operator classes take grid points as arguments. Remove LaplCurv.interpolationOperators. Introduce default struct in LaplCurv.interface.
| author | Martin Almquist <malmquist@stanford.edu> |
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| date | Mon, 03 Dec 2018 14:53:52 -0800 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/+sbp/+implementations/intOpOP_orders_8to8_ratio2to1.m Mon Dec 03 14:53:52 2018 -0800 @@ -0,0 +1,47 @@ +function [IC2F,IF2C,Hc,Hf] = IntOpOP_orders_8to8_ratio2to1(mc,hc,ACC) + +% ACC is a string. +% ACC = 'C2F' creates IC2F with one order of accuracy higher than IF2C. +% ACC = 'F2C' creates IF2C with one order of accuracy higher than IC2F. +ratio = 2; +mf = ratio*mc-1; +hf = hc/ratio; + +switch ACC + case 'F2C' + [stencil_F2C,BC_F2C,HcU,HfU] = ... + sbp.implementations.intOpOP_orders_8to8_ratio_2to1_accC2F4_accF2C5; + case 'C2F' + [stencil_F2C,BC_F2C,HcU,HfU] = ... + sbp.implementations.intOpOP_orders_8to8_ratio_2to1_accC2F5_accF2C4; +end + +stencil_width = length(stencil_F2C); +stencil_hw = (stencil_width-1)/2; +[BC_rows,BC_cols] = size(BC_F2C); + +%%% Norm matrices %%% +Hc = speye(mc,mc); +HcUm = length(HcU); +Hc(1:HcUm,1:HcUm) = spdiags(HcU',0,HcUm,HcUm); +Hc(mc-HcUm+1:mc,mc-HcUm+1:mc) = spdiags(rot90(HcU',2),0,HcUm,HcUm); +Hc = Hc*hc; + +Hf = speye(mf,mf); +HfUm = length(HfU); +Hf(1:HfUm,1:HfUm) = spdiags(HfU',0,HfUm,HfUm); +Hf(mf-length(HfU)+1:mf,mf-length(HfU)+1:mf) = spdiags(rot90(HfU',2),0,HfUm,HfUm); +Hf = Hf*hf; +%%%%%%%%%%%%%%%%%%%%%% + +%%% Create IF2C from stencil and BC +IF2C = sparse(mc,mf); +for i = BC_rows+1 : mc-BC_rows + IF2C(i,ratio*i-1+(-stencil_hw:stencil_hw)) = stencil_F2C; %#ok<SPRIX> +end +IF2C(1:BC_rows,1:BC_cols) = BC_F2C; +IF2C(end-BC_rows+1:end,end-BC_cols+1:end) = rot90(BC_F2C,2); +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% + +%%% Create IC2F using symmetry condition %%%% +IC2F = Hf\IF2C.'*Hc; \ No newline at end of file