syevd_scratchpad_size#
Computes size of scratchpad memory required for syevd
(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 syevd
(buffer or USM version) function must be able to hold.
API#
Syntax#
namespace oneapi::mkl::lapack {
template<typename T>
int64_t syevd_scratchpad_size(sycl::queue &queue,
mkl::job jobz,
mkl::uplo uplo,
int64_t n,
int64_t lda)
}
Input Parameters#
- queue
Device queue where calculations by the syevd (buffer or USM version) function will be performed.
- jobz
Must be
job::novec
orjob::vec
.If
jobz = job::novec
, then only eigenvalues are computed.If
jobz = job::vec
, then eigenvalues and eigenvectors are computed.- uplo
Must be
uplo::upper
oruplo::lower
.If
uplo = uplo::upper
, a stores the upper triangular part ofA
.If
uplo = uplo::lower
, a stores the lower triangular part ofA
.- n
The order of the matrix
A
(0 ≤ n
).- lda
The leading dimension of a. Must be at least
max(1,n)
.
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 syevd
(buffer or USM version) function must be able to hold.