PLASMA
2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
|
int CORE_sormlq | ( | PLASMA_enum | side, |
PLASMA_enum | trans, | ||
int | M, | ||
int | N, | ||
int | K, | ||
int | IB, | ||
const float * | A, | ||
int | LDA, | ||
const float * | T, | ||
int | LDT, | ||
float * | C, | ||
int | LDC, | ||
float * | WORK, | ||
int | LDWORK | ||
) |
CORE_sormlq overwrites the general complex M-by-N tile C with
SIDE = 'L' SIDE = 'R'
TRANS = 'N': Q * C C * Q TRANS = 'C': Q**T * C C * Q**T
where Q is a complex unitary matrix defined as the product of k elementary reflectors
Q = H(k) . . . H(2) H(1)
as returned by CORE_sgelqt. Q is of order M if SIDE = 'L' and of order N if SIDE = 'R'.
[in] | side |
|
[in] | trans |
|
[in] | M | The number of rows of the tile C. M >= 0. |
[in] | N | The number of columns of the tile C. N >= 0. |
[in] | K | The number of elementary reflectors whose product defines the matrix Q. If SIDE = PlasmaLeft, M >= K >= 0; if SIDE = PlasmaRight, N >= K >= 0. |
[in] | IB | The inner-blocking size. IB >= 0. |
[in] | A | Dimension: (LDA,M) if SIDE = PlasmaLeft, (LDA,N) if SIDE = PlasmaRight, The i-th row must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by CORE_sgelqt in the first k rows of its array argument A. |
[in] | LDA | The leading dimension of the array A. LDA >= max(1,K). |
[in] | T | The IB-by-K triangular factor T of the block reflector. T is upper triangular by block (economic storage); The rest of the array is not referenced. |
[in] | LDT | The leading dimension of the array T. LDT >= IB. |
[in,out] | C | On entry, the M-by-N tile C. On exit, C is overwritten by Q*C or Q**T*C or C*Q**T or C*Q. |
[in] | LDC | The leading dimension of the array C. LDC >= max(1,M). |
[in,out] | WORK | On exit, if INFO = 0, WORK(1) returns the optimal LDWORK. |
[in] | LDWORK | The dimension of the array WORK. If SIDE = PlasmaLeft, LDWORK >= max(1,N); if SIDE = PlasmaRight, LDWORK >= max(1,M). |
PLASMA_SUCCESS | successful exit |
<0 | if -i, the i-th argument had an illegal value |