hetrs#

chetrs

Functions

void chetrs(
    const char*          uplo,
    const INT            n,
    const INT            nrhs,
    const c64*  restrict A,
    const INT            lda,
    const INT*  restrict ipiv,
          c64*  restrict B,
    const INT            ldb,
          INT*           info
);

void chetrs(const char *uplo, const INT n, const INT nrhs, const c64 *restrict A, const INT lda, const INT *restrict ipiv, c64 *restrict B, const INT ldb, INT *info)#

CHETRS solves a system of linear equations A*X = B with a complex Hermitian matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by CHETRF.

Parameters

in

uplo

'U': Upper triangular, form is A = U*D*U**H
'L': Lower triangular, form is A = L*D*L**H

in

n

The order of the matrix A. n>=0.

in

nrhs

The number of right hand sides, i.e., the number of columns of the matrix B. nrhs>=0.

in

A

Array of dimension (lda,n). The block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by chetrf.

in

lda

The leading dimension of the array A. lda>=max(1,n).

in

ipiv

Array of dimension n. Details of the interchanges and the block structure of D as determined by chetrf.

inout

B

Array of dimension (ldb,nrhs). On entry, the right hand side matrix B. On exit, the solution matrix X.

in

ldb

The leading dimension of the array B. ldb>=max(1,n).

out

info

info=0: successful exit
info<0: if info=-i, the i-th argument had an illegal value

zhetrs

Functions

void zhetrs(
    const char*          uplo,
    const INT            n,
    const INT            nrhs,
    const c128* restrict A,
    const INT            lda,
    const INT*  restrict ipiv,
          c128* restrict B,
    const INT            ldb,
          INT*           info
);

void zhetrs(const char *uplo, const INT n, const INT nrhs, const c128 *restrict A, const INT lda, const INT *restrict ipiv, c128 *restrict B, const INT ldb, INT *info)#

ZHETRS solves a system of linear equations A*X = B with a complex Hermitian matrix A using the factorization A = U*D*U**H or A = L*D*L**H computed by ZHETRF.

Parameters

in

uplo

'U': Upper triangular, form is A = U*D*U**H
'L': Lower triangular, form is A = L*D*L**H

in

n

The order of the matrix A. n>=0.

in

nrhs

The number of right hand sides, i.e., the number of columns of the matrix B. nrhs>=0.

in

A

Array of dimension (lda,n). The block diagonal matrix D and the multipliers used to obtain the factor U or L as computed by zhetrf.

in

lda

The leading dimension of the array A. lda>=max(1,n).

in

ipiv

Array of dimension n. Details of the interchanges and the block structure of D as determined by zhetrf.

inout

B

Array of dimension (ldb,nrhs). On entry, the right hand side matrix B. On exit, the solution matrix X.

in

ldb

The leading dimension of the array B. ldb>=max(1,n).

out

info

info=0: successful exit
info<0: if info=-i, the i-th argument had an illegal value