_lag2_: Converts general matrix between single and double

Functions
void	magmablas_clag2z (magma_int_t m, magma_int_t n, magmaFloatComplex_const_ptr SA, magma_int_t ldsa, magmaDoubleComplex_ptr A, magma_int_t lda, magma_queue_t queue, magma_int_t *info)
	CLAG2Z converts a single-complex matrix, SA, to a double-complex matrix, A. More...
void	magmablas_dlag2s (magma_int_t m, magma_int_t n, magmaDouble_const_ptr A, magma_int_t lda, magmaFloat_ptr SA, magma_int_t ldsa, magma_queue_t queue, magma_int_t *info)
	DLAG2S converts a double-real matrix, A, to a single-real matrix, SA. More...
void	magmablas_slag2d (magma_int_t m, magma_int_t n, magmaFloat_const_ptr SA, magma_int_t ldsa, magmaDouble_ptr A, magma_int_t lda, magma_queue_t queue, magma_int_t *info)
	SLAG2D converts a single-real matrix, SA, to a double-real matrix, A. More...
void	magmablas_zlag2c (magma_int_t m, magma_int_t n, magmaDoubleComplex_const_ptr A, magma_int_t lda, magmaFloatComplex_ptr SA, magma_int_t ldsa, magma_queue_t queue, magma_int_t *info)
	ZLAG2C converts a double-complex matrix, A, to a single-complex matrix, SA. More...

Detailed Description

Function Documentation

void magmablas_clag2z	(	magma_int_t	m,
		magma_int_t	n,
		magmaFloatComplex_const_ptr	SA,
		magma_int_t	ldsa,
		magmaDoubleComplex_ptr	A,
		magma_int_t	lda,
		magma_queue_t	queue,
		magma_int_t *	info
	)

CLAG2Z converts a single-complex matrix, SA, to a double-complex matrix, A.

Note that while it is possible to overflow while converting from double to single, it is not possible to overflow when converting from single to double.

Parameters

[in]	m	INTEGER The number of lines of the matrix A. M >= 0.
[in]	n	INTEGER The number of columns of the matrix A. N >= 0.
[in]	SA	COMPLEX array, dimension (LDSA,N) On entry, the M-by-N coefficient matrix SA.
[in]	ldsa	INTEGER The leading dimension of the array SA. LDSA >= max(1,M).
[out]	A	COMPLEX_16 array, dimension (LDA,N) On exit, the M-by-N coefficient matrix A.
[in]	lda	INTEGER The leading dimension of the array A. LDA >= max(1,M).
[out]	info	INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value
[in]	queue	magma_queue_t Queue to execute in.

void magmablas_dlag2s	(	magma_int_t	m,
		magma_int_t	n,
		magmaDouble_const_ptr	A,
		magma_int_t	lda,
		magmaFloat_ptr	SA,
		magma_int_t	ldsa,
		magma_queue_t	queue,
		magma_int_t *	info
	)

DLAG2S converts a double-real matrix, A, to a single-real matrix, SA.

RMAX is the overflow for the single-real arithmetic. DLAG2S checks that all the entries of A are between -RMAX and RMAX. If not, the conversion is aborted and a magma_dlag2s_flag is raised.

Parameters

[in]	m	INTEGER The number of lines of the matrix A. m >= 0.
[in]	n	INTEGER The number of columns of the matrix A. n >= 0.
[in]	A	DOUBLE PRECISION array, dimension (LDA,n) On entry, the m-by-n coefficient matrix A.
[in]	lda	INTEGER The leading dimension of the array A. LDA >= max(1,m).
[out]	SA	SINGLE PRECISION 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	INTEGER The leading dimension of the array SA. LDSA >= max(1,m).
[out]	info	INTEGER = 0: successful exit. < 0: if INFO = -i, the i-th argument had an illegal value = 1: an entry of the matrix A is greater than the SINGLE PRECISION overflow threshold, in this case, the content of SA on exit is unspecified.
[in]	queue	magma_queue_t Queue to execute in.

void magmablas_slag2d	(	magma_int_t	m,
		magma_int_t	n,
		magmaFloat_const_ptr	SA,
		magma_int_t	ldsa,
		magmaDouble_ptr	A,
		magma_int_t	lda,
		magma_queue_t	queue,
		magma_int_t *	info
	)

SLAG2D converts a single-real matrix, SA, to a double-real matrix, A.

Note that while it is possible to overflow while converting from double to single, it is not possible to overflow when converting from single to double.

Parameters

[in]	m	INTEGER The number of lines of the matrix A. M >= 0.
[in]	n	INTEGER The number of columns of the matrix A. N >= 0.
[in]	SA	SINGLE PRECISION array, dimension (LDSA,N) On entry, the M-by-N coefficient matrix SA.
[in]	ldsa	INTEGER The leading dimension of the array SA. LDSA >= max(1,M).
[out]	A	DOUBLE PRECISION array, dimension (LDA,N) On exit, the M-by-N coefficient matrix A.
[in]	lda	INTEGER The leading dimension of the array A. LDA >= max(1,M).
[out]	info	INTEGER = 0: successful exit < 0: if INFO = -i, the i-th argument had an illegal value
[in]	queue	magma_queue_t Queue to execute in.

void magmablas_zlag2c	(	magma_int_t	m,
		magma_int_t	n,
		magmaDoubleComplex_const_ptr	A,
		magma_int_t	lda,
		magmaFloatComplex_ptr	SA,
		magma_int_t	ldsa,
		magma_queue_t	queue,
		magma_int_t *	info
	)

ZLAG2C converts a double-complex matrix, A, to a single-complex matrix, SA.

RMAX is the overflow for the single-complex arithmetic. ZLAG2C checks that all the entries of A are between -RMAX and RMAX. If not, the conversion is aborted and a magma_zlag2c_flag is raised.

Parameters

[in]	m	INTEGER The number of lines of the matrix A. m >= 0.
[in]	n	INTEGER The number of columns of the matrix A. n >= 0.
[in]	A	COMPLEX_16 array, dimension (LDA,n) On entry, the m-by-n coefficient matrix A.
[in]	lda	INTEGER The leading dimension of the array A. LDA >= max(1,m).
[out]	SA	COMPLEX 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	INTEGER The leading dimension of the array SA. LDSA >= max(1,m).
[out]	info	INTEGER = 0: successful exit. < 0: if INFO = -i, the i-th argument had an illegal value = 1: an entry of the matrix A is greater than the COMPLEX overflow threshold, in this case, the content of SA on exit is unspecified.
[in]	queue	magma_queue_t Queue to execute in.