# sget03.f - Man Page

TESTING/LIN/sget03.f

## Synopsis

### Functions/Subroutines

subroutine sget03 (n, a, lda, ainv, ldainv, work, ldwork, rwork, rcond, resid)
SGET03

## Function/Subroutine Documentation

### subroutine sget03 (integer n, real, dimension( lda, * ) a, integer lda, real, dimension( ldainv, * ) ainv, integer ldainv, real, dimension( ldwork, * ) work, integer ldwork, real, dimension( * ) rwork, real rcond, real resid)

SGET03

Purpose:

``` SGET03 computes the residual for a general matrix times its inverse:
norm( I - AINV*A ) / ( N * norm(A) * norm(AINV) * EPS ),
where EPS is the machine epsilon.```
Parameters

N

```          N is INTEGER
The number of rows and columns of the matrix A.  N >= 0.```

A

```          A is REAL array, dimension (LDA,N)
The original N x N matrix A.```

LDA

```          LDA is INTEGER
The leading dimension of the array A.  LDA >= max(1,N).```

AINV

```          AINV is REAL array, dimension (LDAINV,N)
The inverse of the matrix A.```

LDAINV

```          LDAINV is INTEGER
The leading dimension of the array AINV.  LDAINV >= max(1,N).```

WORK

`          WORK is REAL array, dimension (LDWORK,N)`

LDWORK

```          LDWORK is INTEGER
The leading dimension of the array WORK.  LDWORK >= max(1,N).```

RWORK

`          RWORK is REAL array, dimension (N)`

RCOND

```          RCOND is REAL
The reciprocal of the condition number of A, computed as
( 1/norm(A) ) / norm(AINV).```

RESID

```          RESID is REAL
norm(I - AINV*A) / ( N * norm(A) * norm(AINV) * EPS )```
Author

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

Definition at line 107 of file sget03.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

The man page sget03(3) is an alias of sget03.f(3).

Tue Nov 28 2023 12:08:43 Version 3.12.0 LAPACK