dlag2s.f File Reference

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Functions/Subroutines
subroutine	dlag2s (M, N, A, LDA, SA, LDSA, INFO)
	DLAG2S converts a double precision matrix to a single precision matrix.

---

Function/Subroutine Documentation

subroutine dlag2s	(	integer	M,
		integer	N,
		double precision, dimension( lda, * )	A,
		integer	LDA,
		real, dimension( ldsa, * )	SA,
		integer	LDSA,
		integer	INFO
	)

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

Download DLAG2S + dependencies [TGZ] [ZIP] [TXT]

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:

[in]	M	M is INTEGER The number of lines of the matrix A. M >= 0.
[in]	N	N is INTEGER The number of columns of the matrix A. N >= 0.
[in]	A	A is DOUBLE PRECISION array, dimension (LDA,N) On entry, the M-by-N coefficient matrix A.
[in]	LDA	LDA is INTEGER The leading dimension of the array A. LDA >= max(1,M).
[out]	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.
[in]	LDSA	LDSA is INTEGER The leading dimension of the array SA. LDSA >= max(1,M).
[out]	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.

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