unmqr_scratchpad_size#
Computes size of scratchpad memory required for unmqr (USM Version)
function. This routine belongs to the oneapi::mkl::lapack namespace.
Description#
Computes the number of elements of type T the scratchpad memory to be passed to the unmqr (buffer or USM version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
template<typename T>
int64_t unmqr_scratchpad_size(sycl::queue &queue,
mkl::side side,
mkl::transpose trans,
int64_t m,
int64_t n,
int64_t k,
int64_t lda,
int64_t ldc)
}
Input Parameters#
- queue
Device queue where calculations by the unmqr (buffer or USM version) function will be performed.
- side
If
side=mkl::side::left,QorQT is applied toCfrom the left. Ifside=mkl::side::right,QorQT is applied toCfrom the right.- trans
If
trans=mkl::transpose::trans, the routine multipliesCbyQ.If
trans=mkl::transpose::nontrans, the routine multipliesCbyQT.- m
The number of rows in the matrix
A(0 ≤ m).- n
The number of columns in the matrix
A(0 ≤ n ≤ m).- k
The number of elementary reflectors whose product defines the matrix
Q(0 ≤ k ≤ n).- lda
The leading dimension of a.
- ldc
The leading dimension of c.
Exceptions#
Exception |
Description |
|---|---|
|
This exception is thrown when an incorrect argument value is supplied. You can determine the position of the incorrect argument by the info() method of the exception object. |
Return Values#
The number of elements of type T the scratchpad memory to be passed to the unmqr (buffer or USM version) function must be able to hold.