A newer version of this document is available. Customers should click here to go to the newest version.
unmqr_scratchpad_size
Computes size of scratchpad memory required for unmqr (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 unmqr (buffer or USM version) function must be able to hold.
API
Syntax
namespace oneapi::mkl::lapack {
  template<typename T>
  int64_t unmqr_scratchpad_size(sycl::queue &queue,
  mkl::side side,
  mkl::transpose trans,
  int64_t m,
  int64_t n,
  int64_t k,
  int64_t lda,
  int64_t ldc)
} 
    
   Input Parameters
- queue
 -  
     
Device queue where calculations by the unmqr (buffer or USM version) function will be performed.
 - side
 -  
     
If side = mkl::side::left, Q or QT is applied to C from the left. If side = mkl::side::right, Q or QT is applied to C from the right.
 - trans
 -  
     
If trans=mkl::transpose::trans, the routine multiplies C by Q.
If trans=mkl::transpose::nontrans, the routine multiplies C by QT.
 - m
 -  
     
The number of rows in the matrix A (0 ≤ m).
 - n
 -  
     
The number of columns in the matrix A (0 ≤ n ≤ m).
 - k
 -  
     
The number of elementary reflectors whose product defines the matrix Q (0 ≤ k ≤ n).
 - lda
 -  
     
The leading dimension of a.
 - ldc
 -  
     
The leading dimension of c.
 
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 unmqr (buffer or USM version) function must be able to hold.