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  • Committer: Bazaar Package Importer
  • Author(s): Torsten Werner
  • Date: 2002-03-21 16:57:43 UTC
  • Revision ID: james.westby@ubuntu.com-20020321165743-e9mv12c1tb1plztg
Tags: upstream-2.6
Import upstream version 2.6

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man/linear/chsolve.cat
 
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chsolve           Scilab Group           Scilab Function            chsolve
 
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NAME
 
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   chsolve - sparse Cholesky solver
 
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CALLING SEQUENCE
 
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 sol=chsolve(spcho,rhs)
 
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PARAMETERS
 
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 spcho
 
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       : list containing the Cholesky factors in coded form returned by chfact 
 
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 rhs, sol
 
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       : full column vectors
 
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DESCRIPTION
 
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   sol=chsolve(spcho,rhs) computes the solution of  sol=A*rhs, with A a
 
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  symmetric sparse positive definite matrix. This function is based on the
 
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  Ng-Peyton programs (ORNL). See the Fortran programs for a complete
 
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  description of the variables in spcho.
 
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EXAMPLE
 
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 A=sprand(20,20,0.1);
 
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 A=A*A'+eye();  
 
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 spcho=chfact(A);
 
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 sol=(1:20)';rhs=A*sol;
 
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 spcho=chfact(A);
 
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 chsolve(spcho,rhs)
 
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SEE ALSO
 
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   chfact, sparse, lufact, luget, spchol 
 
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