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LAPACK
3.7.0
LAPACK: Linear Algebra PACKage
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subroutine spotrs | ( | character | UPLO, |
integer | N, | ||
integer | NRHS, | ||
real, dimension( lda, * ) | A, | ||
integer | LDA, | ||
real, dimension( ldb, * ) | B, | ||
integer | LDB, | ||
integer | INFO | ||
) |
SPOTRS
Download SPOTRS + dependencies [TGZ] [ZIP] [TXT]
SPOTRS 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 SPOTRF.
[in] | UPLO | UPLO is CHARACTER*1 = 'U': Upper triangle of A is stored; = 'L': Lower triangle of A is stored. |
[in] | N | N is INTEGER The order of the matrix A. N >= 0. |
[in] | NRHS | NRHS is INTEGER The number of right hand sides, i.e., the number of columns of the matrix B. NRHS >= 0. |
[in] | A | A is REAL 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 SPOTRF. |
[in] | LDA | LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N). |
[in,out] | B | B is REAL array, dimension (LDB,NRHS) On entry, the right hand side matrix B. On exit, the solution matrix X. |
[in] | LDB | LDB is INTEGER The leading dimension of the array B. LDB >= max(1,N). |
[out] | INFO | INFO is INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value |
Definition at line 112 of file spotrs.f.