org.netlib.lapack
Class STRTRS

java.lang.Object
  org.netlib.lapack.STRTRS

public class STRTRS
extends java.lang.Object

STRTRS is a simplified interface to the JLAPACK routine strtrs.
This interface converts Java-style 2D row-major arrays into
the 1D column-major linearized arrays expected by the lower
level JLAPACK routines.  Using this interface also allows you
to omit offset and leading dimension arguments.  However, because
of these conversions, these routines will be slower than the low
level ones.  Following is the description from the original Fortran
source.  Contact seymour@cs.utk.edu with any questions.

 *     ..
 *
 *  Purpose
 *  =======
 *
 *  STRTRS solves a triangular system of the form
 *
 *     A * X = B  or  A**T * X = B,
 *
 *  where A is a triangular matrix of order N, and B is an N-by-NRHS
 *  matrix.  A check is made to verify that A is nonsingular.
 *
 *  Arguments
 *  =========
 *
 *  UPLO    (input) CHARACTER*1
 *          = 'U':  A is upper triangular;
 *          = 'L':  A is lower triangular.
 *
 *  TRANS   (input) CHARACTER*1
 *          Specifies the form of the system of equations:
 *          = 'N':  A * X = B  (No transpose)
 *          = 'T':  A**T * X = B  (Transpose)
 *          = 'C':  A**H * X = B  (Conjugate transpose = Transpose)
 *
 *  DIAG    (input) CHARACTER*1
 *          = 'N':  A is non-unit triangular;
 *          = 'U':  A is unit triangular.
 *
 *  N       (input) INTEGER
 *          The order of the matrix A.  N >= 0.
 *
 *  NRHS    (input) INTEGER
 *          The number of right hand sides, i.e., the number of columns
 *          of the matrix B.  NRHS >= 0.
 *
 *  A       (input) REAL array, dimension (LDA,N)
 *          The triangular matrix A.  If UPLO = 'U', the leading N-by-N
 *          upper triangular part of the array A contains the upper
 *          triangular matrix, and the strictly lower triangular part of

 *          A is not referenced.  If UPLO = 'L', the leading N-by-N lower
 *          triangular part of the array A contains the lower triangular

 *          matrix, and the strictly upper triangular part of A is not
 *          referenced.  If DIAG = 'U', the diagonal elements of A are
 *          also not referenced and are assumed to be 1.
 *
 *  LDA     (input) INTEGER
 *          The leading dimension of the array A.  LDA >= max(1,N).
 *
 *  B       (input/output) REAL array, dimension (LDB,NRHS)
 *          On entry, the right hand side matrix B.
 *          On exit, if INFO = 0, the solution matrix X.
 *
 *  LDB     (input) INTEGER
 *          The leading dimension of the array B.  LDB >= max(1,N).
 *
 *  INFO    (output) INTEGER
 *          = 0:  successful exit
 *          < 0: if INFO = -i, the i-th argument had an illegal value
 *          > 0: if INFO = i, the i-th diagonal element of A is zero,
 *               indicating that the matrix is singular and the solutions
 *               X have not been computed.
 *
 *  =====================================================================
 *
 *     .. Parameters ..

Constructor Summary

STRTRS()

Method Summary

static void

STRTRS(java.lang.String uplo, java.lang.String trans, java.lang.String diag, int n, int nrhs, float[][] a, float[][] b, intW info)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

STRTRS

public STRTRS()

Method Detail

STRTRS

public static void STRTRS(java.lang.String uplo,
                          java.lang.String trans,
                          java.lang.String diag,
                          int n,
                          int nrhs,
                          float[][] a,
                          float[][] b,
                          intW info)