org.netlib.lapack
Class Sgetc2

java.lang.Object
  extended by org.netlib.lapack.Sgetc2

public class Sgetc2
extends java.lang.Object

Following is the description from the original
Fortran source.  For each array argument, the Java
version will include an integer offset parameter, so
the arguments may not match the description exactly.
Contact seymour@cs.utk.edu with any questions.

* .. * * Purpose * ======= * * SGETC2 computes an LU factorization with complete pivoting of the * n-by-n matrix A. The factorization has the form A = P * L * U * Q, * where P and Q are permutation matrices, L is lower triangular with * unit diagonal elements and U is upper triangular. * * This is the Level 2 BLAS algorithm. * * Arguments * ========= * * N (input) INTEGER * The order of the matrix A. N >= 0. * * A (input/output) REAL array, dimension (LDA, N) * On entry, the n-by-n matrix A to be factored. * On exit, the factors L and U from the factorization * A = P*L*U*Q; the unit diagonal elements of L are not stored. * If U(k, k) appears to be less than SMIN, U(k, k) is given the * value of SMIN, i.e., giving a nonsingular perturbed system. * * LDA (input) INTEGER * The leading dimension of the array A. LDA >= max(1,N). * * IPIV (output) INTEGER array, dimension(N). * The pivot indices; for 1 <= i <= N, row i of the * matrix has been interchanged with row IPIV(i). * * JPIV (output) INTEGER array, dimension(N). * The pivot indices; for 1 <= j <= N, column j of the * matrix has been interchanged with column JPIV(j). * * INFO (output) INTEGER * = 0: successful exit * > 0: if INFO = k, U(k, k) is likely to produce owerflow if * we try to solve for x in Ax = b. So U is perturbed to * avoid the overflow. * * Further Details * =============== * * Based on contributions by * Bo Kagstrom and Peter Poromaa, Department of Computing Science, * Umea University, S-901 87 Umea, Sweden. * * ===================================================================== * * .. Parameters ..


Constructor Summary
Sgetc2()
           
 
Method Summary
static void sgetc2(int n, float[] a, int _a_offset, int lda, int[] ipiv, int _ipiv_offset, int[] jpiv, int _jpiv_offset, intW info)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Sgetc2

public Sgetc2()
Method Detail

sgetc2

public static void sgetc2(int n,
                          float[] a,
                          int _a_offset,
                          int lda,
                          int[] ipiv,
                          int _ipiv_offset,
                          int[] jpiv,
                          int _jpiv_offset,
                          intW info)