cspsl
cspsl - (obsolete) solve the linear system Ax = b for a symmetric matrix A in packed storage,
which has been UDU-factored by CSPCO or CSPFA, and vectors b and x.
SUBROUTINE CSPSL( A, N, IPIVOT, B)
COMPLEX A(*), B(*)
INTEGER N
INTEGER IPIVOT(*)
SUBROUTINE CSPSL_64( A, N, IPIVOT, B)
COMPLEX A(*), B(*)
INTEGER*8 N
INTEGER*8 IPIVOT(*)
#include <sunperf.h>
void cspsl(complex *a, int n, int *ipivot, complex *b);
void cspsl_64(complex *a, long n, long *ipivot, complex *b);
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* A (input)
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UDU factorization of the matrix A, as computed by CSPCO or CSPFA.
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* N (input)
-
Order of the matrix A. N >= 0.
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* IPIVOT (input)
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Pivot vector as computed by CSPCO or CSPFA.
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* B (input/output)
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On entry, the right-hand side vector b.
On exit, the solution vector x.