# sger(3) [centos man page]

```sger.f(3)							      LAPACK								 sger.f(3)

NAME
sger.f -

SYNOPSIS
Functions/Subroutines
subroutine sger (M, N, ALPHA, X, INCX, Y, INCY, A, LDA)
SGER

Function/Subroutine Documentation
subroutine sger (integerM, integerN, realALPHA, real, dimension(*)X, integerINCX, real, dimension(*)Y, integerINCY, real, dimension(lda,*)A,
integerLDA)
SGER Purpose:

SGER   performs the rank 1 operation

A := alpha*x*y**T + A,

where alpha is a scalar, x is an m element vector, y is an n element
vector and A is an m by n matrix.

Parameters:
M

M is INTEGER
On entry, M specifies the number of rows of the matrix A.
M must be at least zero.

N

N is INTEGER
On entry, N specifies the number of columns of the matrix A.
N must be at least zero.

ALPHA

ALPHA is REAL
On entry, ALPHA specifies the scalar alpha.

X

X is REAL array of dimension at least
( 1 + ( m - 1 )*abs( INCX ) ).
Before entry, the incremented array X must contain the m
element vector x.

INCX

INCX is INTEGER
On entry, INCX specifies the increment for the elements of
X. INCX must not be zero.

Y

Y is REAL array of dimension at least
( 1 + ( n - 1 )*abs( INCY ) ).
Before entry, the incremented array Y must contain the n
element vector y.

INCY

INCY is INTEGER
On entry, INCY specifies the increment for the elements of
Y. INCY must not be zero.

A

A is REAL array of DIMENSION ( LDA, n ).
Before entry, the leading m by n part of the array A must
contain the matrix of coefficients. On exit, A is
overwritten by the updated matrix.

LDA

LDA is INTEGER
On entry, LDA specifies the first dimension of A as declared
in the calling (sub) program. LDA must be at least
max( 1, m ).

Author:
Univ. of Tennessee

Univ. of California Berkeley

NAG Ltd.

Date:
November 2011

Further Details:

Level 2 Blas routine.

-- Written on 22-October-1986.
Jack Dongarra, Argonne National Lab.
Jeremy Du Croz, Nag Central Office.
Sven Hammarling, Nag Central Office.
Richard Hanson, Sandia National Labs.

Definition at line 131 of file sger.f.

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

Version 3.4.2							  Tue Sep 25 2012							 sger.f(3)```

## Check Out this Related Man Page

```SGER(3) 							   BLAS routine 							   SGER(3)

NAME
SGER - perform the rank 1 operation   A := alpha*x*y' + A,

SYNOPSIS
SUBROUTINE SGER ( M, N, ALPHA, X, INCX, Y, INCY, A, LDA )

REAL        ALPHA

INTEGER     INCX, INCY, LDA, M, N

REAL        A( LDA, * ), X( * ), Y( * )

PURPOSE
SGER   performs the rank 1 operation

where alpha is a scalar, x is an m element vector, y is an n element vector and A is an m by n matrix.

PARAMETERS
M      - INTEGER.
On entry, M specifies the number of rows of the matrix A.  M must be at least zero.  Unchanged on exit.

N      - INTEGER.
On entry, N specifies the number of columns of the matrix A.  N must be at least zero.  Unchanged on exit.

ALPHA  - REAL		.
On entry, ALPHA specifies the scalar alpha.  Unchanged on exit.

X      - REAL		 array of dimension at least
( 1 + ( m - 1 )*abs( INCX ) ).  Before entry, the incremented array X must contain the m element vector x.  Unchanged on exit.

INCX   - INTEGER.
On entry, INCX specifies the increment for the elements of X. INCX must not be zero.  Unchanged on exit.

Y      - REAL		 array of dimension at least
( 1 + ( n - 1 )*abs( INCY ) ).  Before entry, the incremented array Y must contain the n element vector y.  Unchanged on exit.

INCY   - INTEGER.
On entry, INCY specifies the increment for the elements of Y. INCY must not be zero.  Unchanged on exit.

A      - REAL		 array of DIMENSION ( LDA, n ).
Before  entry,  the  leading  m  by  n part of the array A must contain the matrix of coefficients. On exit, A is overwritten by the
updated matrix.

LDA    - INTEGER.
On entry, LDA specifies the first dimension of A as declared in the calling (sub) program. LDA  must  be	at  least  max(  1,  m	).
Unchanged on exit.

Level 2 Blas routine.

-- Written on 22-October-1986.  Jack Dongarra, Argonne National Lab.  Jeremy Du Croz, Nag Central Office.  Sven Hammarling, Nag Cen-
tral Office.  Richard Hanson, Sandia National Labs.

BLAS routine							  16 October 1992							   SGER(3)```
Man Page