sytrd_scratchpad_size¶
Computes size of scratchpad memory required for sytrd function.
Description
sytrd_scratchpad_size supports the following precisions.
T
float
double
Computes the number of elements of type T the scratchpad memory to be passed to sytrd function should be able to hold.
Calls to this routine must specify the template parameter explicitly.
sytrd_scratchpad_size¶
Syntax
namespace oneapi::mkl::lapack {
template <typename T>
std::int64_t sytrd_scratchpad_size(cl::sycl::queue &queue, oneapi::mkl::uplo upper_lower, std::int64_t n, std::int64_t lda)
}
Input Parameters
- queue
Device queue where calculations by sytrd function will be performed.
- upper_lower
Must be
uplo::upperoruplo::lower.If
upper_lower = uplo::upper, a stores the upper triangular part of \(A\).If
upper_lower = uplo::lower, a stores the lower triangular part of \(A\).- n
The order of the matrices \(A\) \((0 \le n)\).
- lda
The leading dimension of
a.
Throws
This routine shall throw the following exceptions if the associated condition is detected. An implementation may throw additional implementation-specific exception(s) in case of error conditions not covered here.
oneapi::mkl::unsupported_device
oneapi::mkl::lapack::invalid_argument
Exception is thrown in case of incorrect supplied argument value. Position of wrong argument can be determined by info() method of exception object.
Return Value
The number of elements of type T the scratchpad memory to be passed to sytrd function should be able to hold.
Parent topic: LAPACK Singular Value and Eigenvalue Problem Routines