org.netlib.lapack
Class Slansp

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

public class Slansp
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 * ======= * * SLANSP returns the value of the one norm, or the Frobenius norm, or * the infinity norm, or the element of largest absolute value of a * real symmetric matrix A, supplied in packed form. * * Description * =========== * * SLANSP returns the value * * SLANSP = ( max(abs(A(i,j))), NORM = 'M' or 'm' * ( * ( norm1(A), NORM = '1', 'O' or 'o' * ( * ( normI(A), NORM = 'I' or 'i' * ( * ( normF(A), NORM = 'F', 'f', 'E' or 'e' * * where norm1 denotes the one norm of a matrix (maximum column sum), * normI denotes the infinity norm of a matrix (maximum row sum) and * normF denotes the Frobenius norm of a matrix (square root of sum of * squares). Note that max(abs(A(i,j))) is not a matrix norm. * * Arguments * ========= * * NORM (input) CHARACTER*1 * Specifies the value to be returned in SLANSP as described * above. * * UPLO (input) CHARACTER*1 * Specifies whether the upper or lower triangular part of the * symmetric matrix A is supplied. * = 'U': Upper triangular part of A is supplied * = 'L': Lower triangular part of A is supplied * * N (input) INTEGER * The order of the matrix A. N >= 0. When N = 0, SLANSP is * set to zero. * * AP (input) REAL array, dimension (N*(N+1)/2) * The upper or lower triangle of the symmetric matrix A, packed * columnwise in a linear array. The j-th column of A is stored * in the array AP as follows: * if UPLO = 'U', AP(i + (j-1)*j/2) = A(i,j) for 1<=i<=j; * if UPLO = 'L', AP(i + (j-1)*(2n-j)/2) = A(i,j) for j<=i<=n. * * WORK (workspace) REAL array, dimension (LWORK), * where LWORK >= N when NORM = 'I' or '1' or 'O'; otherwise, * WORK is not referenced. * * ===================================================================== * * .. Parameters ..


Constructor Summary
Slansp()
           
 
Method Summary
static float slansp(java.lang.String norm, java.lang.String uplo, int n, float[] ap, int _ap_offset, float[] work, int _work_offset)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Slansp

public Slansp()
Method Detail

slansp

public static float slansp(java.lang.String norm,
                           java.lang.String uplo,
                           int n,
                           float[] ap,
                           int _ap_offset,
                           float[] work,
                           int _work_offset)