ormqr_scratchpad_size¶
Computes size of scratchpad memory required for ormqr function.
Description
ormqr_scratchpad_size supports the following precisions.
T
float
double
Computes the number of elements of type T the scratchpad memory to be passed to ormqr function should be able to hold.
Calls to this routine must specify the template parameter explicitly.
ormqr_scratchpad_size¶
Syntax
namespace oneapi::mkl::lapack {
template <typename T>
std::int64_t ormqr_scratchpad_size(sycl::queue &queue, oneapi::mkl::side side, oneapi::mkl::transpose trans, std::int64_t m, std::int64_t n, std::int64_t k, std::int64_t lda, std::int64_t ldc, std::int64_t &scratchpad_size)
}
Input Parameters
- queue
Device queue where calculations by ormqr function will be performed.
- side
If
side=oneapi::mkl::side::left, \(Q\) or \(Q^{T}\) is applied to \(C\) from the left.If
side=oneapi::mkl::side::right, \(Q\) or \(Q^{T}\) is applied to \(C\) from the right.- trans
If
trans=oneapi::mkl::transpose::nontrans, the routine multiplies \(C\) by \(Q\).If
trans=oneapi::mkl::transpose::trans, the routine multiplies \(C\) by \(Q^{T}\).- m
The number of rows in the matrix \(C\) (\(0 \le m\)).
- n
The number of columns in the matrix \(C\) (\(0 \le n \le m\)).
- k
The number of elementary reflectors whose product defines the matrix \(Q\) (\(0 \le k \le n\)).
- lda
The leading dimension of
a.- ldc
The leading dimension of
c.
Return Value
The number of elements of type T the scratchpad memory to be passed to ormqr function should be able to hold.
Parent topic: LAPACK Linear Equation Routines