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fix writesdpa.m sedumi form: A vs At #10

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fix writesdpa.m sedumi form: A vs At #10

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29 changes: 12 additions & 17 deletions matlab/writesdpa.m
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Original file line number Diff line number Diff line change
Expand Up @@ -3,10 +3,10 @@
%
% Usage:
%
% ret=writesdpa(fname,A,b,c,K,pars)
% ret=writesdpa(fname,At,b,c,K,pars)
%
% fname Name of SDPA file, in quotes
% A,b,c,K Problem in SeDuMi form
% At,b,c,K Problem in SeDuMi form
% pars Optional parameters.
% pars.printlevel=0 No printed output
% pars.printlevel=1 (default) Some printed output.
Expand Down Expand Up @@ -40,7 +40,7 @@
% First Version: 7/14/03. Modified from old writesdp.m which wrote problems
% in SDPPack format.
%
function ret=writesdpa(fname,A,b,c,K,pars)
function ret=writesdpa(fname,At,b,c,K,pars)
%
% First, check to see whether or not we should be quiet.
%
Expand All @@ -59,11 +59,11 @@
quiet=0;
end
%
% First, check for complex numbers in A, b, or c.
% First, check for complex numbers in At, b, or c.
%
if (isreal(A) ~= 1)
if (isreal(At) ~= 1)
if (quiet == 0)
fprintf('A is not real!\n');
fprintf('At is not real!\n');
end
ret=1;
return
Expand Down Expand Up @@ -123,17 +123,17 @@
%
m=length(b);
%
% Deal with the following special case. If A is transposed, transpose
% it again so that it is of the right size.
% Deal with the following special case. If At is transposed (i.e., if it
% is just A), transpose it to obtain the actual At so that it is of
% the right size.
%
[Am,An]=size(A);
[An,Am]=size(At);
if (Am ~= m)
if (An == m)
if (quiet==0)
fprintf('Transposing A to match b \n');
end
AT=A;
A=A';
At=At';
%
% Also swap Am and An so that they're correct.
%
Expand All @@ -150,11 +150,6 @@
ret=1;
return
end
else
%
% No need to transpose A, but we'll need AT.
%
AT=A';
end
%
% Deal with the following special case: if c==0, then c should really
Expand Down Expand Up @@ -334,7 +329,7 @@
% Print out the SDP part of constraint cn.
%
base=sizelin+1;
rowcn=AT(:,cn);
rowcn=At(:,cn);
for i=1:nsdpblocks
I=find(rowcn);
II=find(I>=base);
Expand Down