PLASMA
2.8.0
PLASMA - Parallel Linear Algebra for Scalable Multi-core Architectures
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int CORE_cherfb | ( | PLASMA_enum | uplo, |
int | n, | ||
int | k, | ||
int | ib, | ||
int | nb, | ||
const PLASMA_Complex32_t * | A, | ||
int | lda, | ||
const PLASMA_Complex32_t * | T, | ||
int | ldt, | ||
PLASMA_Complex32_t * | C, | ||
int | ldc, | ||
PLASMA_Complex32_t * | WORK, | ||
int | ldwork | ||
) |
CORE_cherfb overwrites the symmetric complex N-by-N tile C with
Q**T*C*Q
where Q is a complex unitary matrix defined as the product of k elementary reflectors
Q = H(1) H(2) . . . H(k)
as returned by CORE_cgeqrt. Only PlasmaLower supported!
[in] | uplo |
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[in] | n | The number of rows/columns of the tile C. N >= 0. |
[in] | k | The number of elementary reflectors whose product defines the matrix Q. K >= 0. |
[in] | ib | The inner-blocking size. IB >= 0. |
[in] | nb | The blocking size. NB >= 0. |
[in] | A | The i-th column must contain the vector which defines the elementary reflector H(i), for i = 1,2,...,k, as returned by CORE_cgeqrt in the first k columns of its array argument A. |
[in] | lda | The leading dimension of the array A. LDA >= max(1,N). |
[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 symmetric N-by-N tile C. On exit, C is overwritten by Q**T*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. LDWORK >= max(1,N); |
PLASMA_SUCCESS | successful exit |
<0 | if -i, the i-th argument had an illegal value |