A newer version of this document is available. Customers should click here to go to the newest version.
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>
  int64_t ungqr_scratchpad_size(sycl::queue &queue,
  int64_t m,
  int64_t n,
  int64_t k,
  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.