# sger.f - Man Page

BLAS/SRC/sger.f

## Synopsis

### Functions/Subroutines

subroutine sger (m, n, alpha, x, incx, y, incy, a, lda)
SGER

## Function/Subroutine Documentation

### subroutine sger (integer m, integer n, real alpha, real, dimension(*) x, integer incx, real, dimension(*) y, integer incy, real, dimension(lda,*) a, integer lda)

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, 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, 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, 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.

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 129 of file sger.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

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

Tue Nov 28 2023 12:08:41 Version 3.12.0 LAPACK