Visible to Intel only — GUID: GUID-387DFE3C-5682-4EC2-B2DD-9A9ECAD5C286
Visible to Intel only — GUID: GUID-387DFE3C-5682-4EC2-B2DD-9A9ECAD5C286
ungqr_scratchpad_size
Computes size of scratchpad memory required for ungqr (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 ungqr (buffer or USM version) function must be able to hold.
API
Syntax
namespace oneapi::mkl::lapack { template<typename T> std::int64_t ungqr_scratchpad_size(sycl::queue &queue, std::int64_t m, std::int64_t n, std::int64_t k, std::int64_t lda) }
Input Parameters
- queue
-
Device queue where calculations by the ungqr (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
Exception |
Description |
---|---|
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 ungqr (buffer or USM version) function must be able to hold.