org.netlib.lapack
Class SOPGTR

java.lang.Object
  extended by org.netlib.lapack.SOPGTR

public class SOPGTR
extends java.lang.Object

SOPGTR is a simplified interface to the JLAPACK routine sopgtr.
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 * ======= * * SOPGTR generates a real orthogonal matrix Q which is defined as the * product of n-1 elementary reflectors H(i) of order n, as returned by * SSPTRD using packed storage: * * if UPLO = 'U', Q = H(n-1) . . . H(2) H(1), * * if UPLO = 'L', Q = H(1) H(2) . . . H(n-1). * * Arguments * ========= * * UPLO (input) CHARACTER*1 * = 'U': Upper triangular packed storage used in previous * call to SSPTRD; * = 'L': Lower triangular packed storage used in previous * call to SSPTRD. * * N (input) INTEGER * The order of the matrix Q. N >= 0. * * AP (input) REAL array, dimension (N*(N+1)/2) * The vectors which define the elementary reflectors, as * returned by SSPTRD. * * TAU (input) REAL array, dimension (N-1) * TAU(i) must contain the scalar factor of the elementary * reflector H(i), as returned by SSPTRD. * * Q (output) REAL array, dimension (LDQ,N) * The N-by-N orthogonal matrix Q. * * LDQ (input) INTEGER * The leading dimension of the array Q. LDQ >= max(1,N). * * WORK (workspace) REAL array, dimension (N-1) * * INFO (output) INTEGER * = 0: successful exit * < 0: if INFO = -i, the i-th argument had an illegal value * * ===================================================================== * * .. Parameters ..


Constructor Summary
SOPGTR()
           
 
Method Summary
static void SOPGTR(java.lang.String uplo, int n, float[] ap, float[] tau, float[][] q, float[] work, intW info)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

SOPGTR

public SOPGTR()
Method Detail

SOPGTR

public static void SOPGTR(java.lang.String uplo,
                          int n,
                          float[] ap,
                          float[] tau,
                          float[][] q,
                          float[] work,
                          intW info)