debian man page for slansp

slansp.f(3)							      LAPACK							       slansp.f(3)

NAME
       slansp.f -

SYNOPSIS
   Functions/Subroutines
       REAL function slansp (NORM, UPLO, N, AP, WORK)
	   SLANSP

Function/Subroutine Documentation
   REAL function slansp (characterNORM, characterUPLO, integerN, real, dimension( * )AP, real, dimension( * )WORK)
       SLANSP

       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.

       Returns:
	   SLANSP

	       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 consistent matrix norm.

       Parameters:
	   NORM

		     NORM is CHARACTER*1
		     Specifies the value to be returned in SLANSP as described
		     above.

	   UPLO

		     UPLO is 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

		     N is INTEGER
		     The order of the matrix A.  N >= 0.  When N = 0, SLANSP is
		     set to zero.

	   AP

		     AP is 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

		     WORK is REAL array, dimension (MAX(1,LWORK)),
		     where LWORK >= N when NORM = 'I' or '1' or 'O'; otherwise,
		     WORK is not referenced.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 115 of file slansp.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.1							  Sun May 26 2013						       slansp.f(3)