Cholesky decomposition: Difference between revisions
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(Added C++ solution) |
m (→{{header|REXX}}: simplified the code.) |
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do r=1 for ord |
do r=1 for ord |
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do c=1 for r; $=0; do i=1 for c-1; $= $ + !.r.i * !.c.i; end /*i*/ |
do c=1 for r; $=0; do i=1 for c-1; $= $ + !.r.i * !.c.i; end /*i*/ |
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if r=c then !.r.r= sqrt(!.r.r - $) |
if r=c then !.r.r= sqrt(!.r.r - $) |
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else !.r.c= 1 / !.c.c * (@.r.c - $) |
else !.r.c= 1 / !.c.c * (@.r.c - $) |
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end /*c*/ |
end /*c*/ |
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numeric form; m.=9; parse value format(x,2,1,,0) 'E0' with g 'E' _ .; g=g*.5'e'_ %2 |
numeric form; m.=9; parse value format(x,2,1,,0) 'E0' with g 'E' _ .; g=g*.5'e'_ %2 |
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do j=0 while h>9; m.j=h; h=h%2+1; end /*j*/ |
do j=0 while h>9; m.j=h; h=h%2+1; end /*j*/ |
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do k=j+5 to 0 by -1; numeric digits m.k; g=(g+x/g)*.5; end /*k*/; |
do k=j+5 to 0 by -1; numeric digits m.k; g=(g+x/g)*.5; end /*k*/; return g/1</lang> |
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{{out|output}} |
{{out|output}} |
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<pre> |
<pre> |
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