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- DPOTRS - solve a system of linear equations A*X = B with a symmetric
- positive definite matrix A using the Cholesky factorization A = U**T*U or
- A = L*L**T computed by DPOTRF
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- SUBROUTINE DPOTRS( UPLO, N, NRHS, A, LDA, B, LDB, INFO )
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- CHARACTER UPLO
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- INTEGER INFO, LDA, LDB, N, NRHS
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- DOUBLE PRECISION A( LDA, * ), B( LDB, * )
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- PPPPUUUURRRRPPPPOOOOSSSSEEEE
- DPOTRS solves a system of linear equations A*X = B with a symmetric
- positive definite matrix A using the Cholesky factorization A = U**T*U or
- A = L*L**T computed by DPOTRF.
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- AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
- UPLO (input) CHARACTER*1
- = 'U': Upper triangle of A is stored;
- = 'L': Lower triangle of A is stored.
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- N (input) INTEGER
- The order of the matrix A. N >= 0.
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- NRHS (input) INTEGER
- The number of right hand sides, i.e., the number of columns of
- the matrix B. NRHS >= 0.
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- A (input) DOUBLE PRECISION array, dimension (LDA,N)
- The triangular factor U or L from the Cholesky factorization A =
- U**T*U or A = L*L**T, as computed by DPOTRF.
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- LDA (input) INTEGER
- The leading dimension of the array A. LDA >= max(1,N).
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- B (input/output) DOUBLE PRECISION array, dimension (LDB,NRHS)
- On entry, the right hand side matrix B. On exit, the solution
- matrix X.
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- LDB (input) INTEGER
- The leading dimension of the array B. LDB >= max(1,N).
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- INFO (output) INTEGER
- = 0: successful exit
- < 0: if INFO = -i, the i-th argument had an illegal value
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- PPPPaaaaggggeeee 1111
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