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man pages->IRIX man pages -> complib/RSP (3)
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### Contents

```
_RSP(3F)							      _RSP(3F)

```

### NAME[Toc][Back]

```     RSP, SRSP	-  EISPACK routine.  This subroutine calls the recommended
sequence of subroutines from the eigensystem subroutine package (EISPACK)
to	find the eigenvalues and eigenvectors (if desired) of a	REAL SYMMETRIC
PACKED matrix.

```

### SYNOPSYS[Toc][Back]

```	  subroutine  rsp(nm,n,nv,a,w,matz,z,fv1,fv2,ierr)
integer	   nm, n, nv, matz, ierr
double precision a(nv), w(n),	z(nm,n), fv1(n), fv2(n)

subroutine srsp(nm,n,nv,a,w,matz,z,fv1,fv2,ierr)
integer	   nm, n, nv, matz, ierr
real		   a(nv), w(n),	z(nm,n), fv1(n), fv2(n)

```

### DESCRIPTION[Toc][Back]

```     On	Input

NM	must be	set to the row dimension of the	two-dimensional	array
parameters	as declared in the calling program dimension statement.

N is the order of the matrix  A.

NV	is an integer variable set equal to the	dimension of the array	A  as
specified for

A in the calling program.	NV  must not be	less than  N*(N+1)/2.

A contains	the lower triangle of the real symmetric packed	matrix stored
row-wise.

MATZ is an	integer	variable set equal to zero if only eigenvalues are
desired.  Otherwise it is set to any non-zero integer for both
eigenvalues and eigenvectors.  On Output

W contains	the eigenvalues	in ascending order.

Z contains	the eigenvectors if MATZ is not	zero.

IERR is an	integer	output variable	set equal to an	error completion code
described in section 2B OF	the documentation.  The	normal completion code
is	zero.

FV1 and  FV2  are temporary storage arrays. Questions and comments	should
be	directed to B. S. Garbow, APPLIED MATHEMATICS DIVISION,	ARGONNE
NATIONAL LABORATORY

PPPPaaaaggggeeee 1111```
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