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% Script in Octave for generating test data
1;
% Returns the minor matrix
function m = minor(A, r, c)
m = A;
m(r,:) = [];
m(:,c) = [];
end;
% Returns the cofactor matrix
function m = cofactors(A)
m = zeros(rows(A), columns(A));
for r = [1 : rows(A)]
for c = [1 : columns(A)]
m(r, c) = det(minor(A, r, c));
if (mod(r + c, 2) == 1)
m(r, c) = -m(r, c);
end;
end;
end;
end;
% Prints the matrix as C++ code
function printout(A, name)
printf('const float %s[16] = \n', name);
printf('{\n');
for c = [1 : columns(A)]
for r = [1 : rows(A)]
printf(' %f', A(r,c));
if (! ( (r == 4) && (c == 4) ) )
printf(',');
end;
printf('\n');
end;
end;
printf('};\n');
end;
printf('// Cofactors\n');
A = randn(4,4);
printout(A, 'COF_MAT');
printf('\n');
printout(cofactors(A), 'COF_RESULT');
printf('\n');
printf('\n');
printf('// Det\n');
A = randn(4,4);
printout(A, 'DET_MAT');
printf('\n');
printf('const float DET_RESULT = %f;', det(A));
printf('\n');
printf('\n');
printf('// Invert\n');
A = randn(4,4);
printout(A, 'INV_MAT');
printf('\n');
printout(inv(A), 'COF_RESULT');
printf('\n');
printf('\n');
printf('// Multiplication\n');
A = randn(4,4);
printout(A, 'MUL_A');
printf('\n');
B = randn(4,4);
printout(B, 'MUL_B');
printf('\n');
C = A * B;
printout(C, 'MUL_RESULT');
printf('\n');
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