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https://github.com/TREX-CoE/Sherman-Morrison.git
synced 2024-12-26 06:15:08 +01:00
39 lines
1.2 KiB
Matlab
39 lines
1.2 KiB
Matlab
Sold = dlmread('Slater_old.dat');
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Sold_inv = dlmread('Slater_old_inv.dat');
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S = dlmread('Slater.dat');
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S_inv = dlmread('Slater_inv.dat');
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printf("\n")
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printf("======================================\n")
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printf("OLD Slater-matrix and inverse\n")
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printf("--------------------------------------\n")
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printf("Determinant of S x S_inv : %f\n", det(Sold*Sold_inv))
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printf("Trace of S x S_inv : %f\n", trace(Sold*Sold_inv))
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printf("Norm of S x S_inv : %f\n", norm(Sold*Sold_inv))
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printf("\n")
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printf("NEW Slater-matrix and inverse\n")
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printf("--------------------------------------\n")
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printf("Determinant of S x S_inv : %f\n", det(S*S_inv))
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printf("Trace of S x S_inv : %f\n", trace(S*S_inv))
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printf("Norm of S x S_inv : %f\n", norm(S*S_inv))
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cutoff = 1e-6;
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printf("\n")
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printf("Cutoff set to %e: S x S_inv = \n", cutoff)
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printf(" -----------------------------------------\n")
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dim = columns(S);
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res=S*S_inv;
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for i = 1:dim
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for j = 1:dim
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if (res(i,j) < cutoff)
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res(i,j) = 0;
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elseif (S(i,j)-1 < cutoff)
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res(i,j) = 1;
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endif
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endfor
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endfor
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format free;
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disp(res);
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printf(" =========================================\n")
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