orgqr_scratchpad_size

Computes size of scratchpad memory required for orgqr (USM Version) function. This routine belongs to the oneapi::mkl::lapacknamespace.

Syntax

template<typename T>
std::int64_t orgqr_scratchpad_size(cl::sycl::queue &queue, std::int64_t m, std::int64_t n, std::int64_t k, std::int64_t lda)

Description

Computes the number of elements of type T the scratchpad memory to be passed to the orgqr (buffer or USM version) function should be able to hold.

Input Parameters

queue

Device queue where calculations by the orgqr (buffer or USM version) function will be performed.

m

The number of rows in the matrix A (0≤m).

n

The number of columns in the matrix A (0≤n).

k

The number of elementary reflectors whose product defines the matrix Q (0≤k≤n).

lda

The leading dimension of a (lda≤m).

Exceptions

mkl::lapack::exception

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 orgqr (buffer or USM version) function should be able to hold.