getrs_scratchpad_size¶
Computes size of scratchpad memory required for getrs function.
Description
getrs_scratchpad_size supports the following precisions.
T
float
double
std::complex<float>
std::complex<double>
Computes the number of elements of type T the scratchpad memory to be passed to getrs function should be able to hold.
Calls to this routine must specify the template parameter
explicitly.
getrs_scratchpad_size¶
Syntax
namespace oneapi::mkl::lapack {
template <typename T>
std::int64_t getrs_scratchpad_size(sycl::queue &queue, oneapi::mkl::transpose trans, std::int64_t n, std::int64_t nrhs, std::int64_t lda, std::int64_t ldb)
}
Input Parameters
- queue
Device queue where calculations by getrs function will be performed.
- trans
Indicates the form of the equations:
If
trans=oneapi::mkl::transpose::nontrans, then \(AX = B\) is solved for \(X\).If
trans=oneapi::mkl::transpose::trans, then \(A^TX = B\) is solved for \(X\).If
trans=oneapi::mkl::transpose::conjtrans, then \(A^HX = B\) is solved for \(X\).- n
The order of the matrix \(A\) \((0 \le n)\) and the number of rows in matrix \(B(0 \le n)\).
- nrhs
The number of right-hand sides (\(0 \le \text{nrhs}\)).
- lda
The leading dimension of
a.- ldb
The leading dimension of
b.
Return Value
The number of elements of type T the scratchpad memory to be passed to getrs function should be able to hold.
Parent topic: LAPACK Linear Equation Routines