zlat2c.f File Reference

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Functions/Subroutines
subroutine	zlat2c (UPLO, N, A, LDA, SA, LDSA, INFO)
	ZLAT2C converts a double complex triangular matrix to a complex triangular matrix.

---

Function/Subroutine Documentation

subroutine zlat2c	(	character	UPLO,
		integer	N,
		complex*16, dimension( lda, * )	A,
		integer	LDA,
		complex, dimension( ldsa, * )	SA,
		integer	LDSA,
		integer	INFO
	)

ZLAT2C converts a double complex triangular matrix to a complex triangular matrix.

Download ZLAT2C + dependencies [TGZ] [ZIP] [TXT]

Purpose:

 ZLAT2C converts a COMPLEX*16 triangular matrix, SA, to a COMPLEX
 triangular matrix, A.

 RMAX is the overflow for the SINGLE PRECISION arithmetic
 ZLAT2C 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]	UPLO	UPLO is CHARACTER*1 = 'U': A is upper triangular; = 'L': A is lower triangular.
[in]	N	N is INTEGER The number of rows and columns of the matrix A. N >= 0.
[in]	A	A is COMPLEX*16 array, dimension (LDA,N) On entry, the N-by-N triangular coefficient matrix A.
[in]	LDA	LDA is INTEGER The leading dimension of the array A. LDA >= max(1,N).
[out]	SA	SA is COMPLEX array, dimension (LDSA,N) Only the UPLO part of SA is referenced. On exit, if INFO=0, the N-by-N coefficient matrix SA; if INFO>0, the content of the UPLO part 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 the UPLO part 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 112 of file zlat2c.f.

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