# dlag2s.f man page

dlag2s.f —

## Synopsis

### Functions/Subroutines

subroutinedlag2s(M, N, A, LDA, SA, LDSA, INFO)DLAG2Sconverts a double precision matrix to a single precision matrix.

## Function/Subroutine Documentation

### subroutine dlag2s (integerM, integerN, double precision, dimension( lda, * )A, integerLDA, real, dimension( ldsa, * )SA, integerLDSA, integerINFO)

**DLAG2S** converts a double precision matrix to a single precision matrix.

**Purpose:**

```
DLAG2S converts a DOUBLE PRECISION matrix, SA, to a SINGLE
PRECISION matrix, A.
RMAX is the overflow for the SINGLE PRECISION arithmetic
DLAG2S checks that all the entries of A are between -RMAX and
RMAX. If not the convertion is aborted and a flag is raised.
This is an auxiliary routine so there is no argument checking.
```

**Parameters:**

*M*

```
M is INTEGER
The number of lines of the matrix A. M >= 0.
```

*N*

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

*A*

```
A is DOUBLE PRECISION array, dimension (LDA,N)
On entry, the M-by-N coefficient matrix A.
```

*LDA*

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

*SA*

```
SA is REAL array, dimension (LDSA,N)
On exit, if INFO=0, the M-by-N coefficient matrix SA; if
INFO>0, the content of SA is unspecified.
```

*LDSA*

```
LDSA is INTEGER
The leading dimension of the array SA. LDSA >= max(1,M).
```

*INFO*

```
INFO is INTEGER
= 0: successful exit.
= 1: an entry of the matrix A is greater than the SINGLE
PRECISION overflow threshold, in this case, the content
of SA in exit is unspecified.
```

**Author:**

Univ. of Tennessee

Univ. of California Berkeley

Univ. of Colorado Denver

NAG Ltd.

**Date:**

September 2012

Definition at line 109 of file dlag2s.f.

## Author

Generated automatically by Doxygen for LAPACK from the source code.

## Referenced By

dlag2s(3) is an alias of dlag2s.f(3).