maxmag¶
Returns the element with the larger magnitude between each pair of elements of the two vector arguments.
Syntax
Buffer API:
void maxmag(queue& exec_queue, int64_t n, buffer<T,1>& a, buffer<T,1>& b, buffer<T,1>& y, uint64_t mode = mode::not_defined )
sycl::event maxmag(sycl::queue & exec_queue, sycl::buffer<T> & a, oneapi::mkl::slice sa, sycl::buffer<T> & b, oneapi::mkl::slice sb, sycl::buffer<T> & y, oneapi::mkl::slice sy, oneapi::mkl::vm::mode lib_mode = oneapi::mkl::vm::mode::not_defined);
USM API:
event maxmag(queue& exec_queue, int64_t n, T* a, T* b, T* y, vector_class<event> const & depends = {}, uint64_t mode = mode::not_defined )
sycl::event maxmag(sycl::queue & exec_queue, T const * a, oneapi::mkl::slice sa, T const * b, oneapi::mkl::slice sb, T * y, oneapi::mkl::slice sy, sycl::vector_class<cl::sycl::event> const & depends = {}, oneapi::mkl::vm::mode lib_mode = oneapi::mkl::vm::mode::not_defined);
maxmag
supports the following precisions and devices:
T |
Devices supported |
---|---|
|
Host, CPU, and GPU |
|
Host, CPU, and GPU |
Description
The maxmag(a,b) function returns a vector with element values equal
to the element with the larger magnitude from each pair of
corresponding elements of the two vectors a
and b
:
If |
a
| > |b
| maxmag(a,b) returnsa
, otherwise maxmag(a,b) returnsb
.If |
b
| > |a
| maxmag(a,b) returnsb
, otherwise maxmag(a,b) returnsa
.Otherwise maxmag(a,b) behaves like fmax.
Argument 1 |
Argument 2 |
Result |
Error Code |
---|---|---|---|
|
NAN |
|
|
NAN |
|
|
|
NAN |
NAN |
NAN |
The maxmag(a,b) function does not generate any errors.
Input Parameters
Buffer API:
- exec_queue
The queue where the routine should be executed.
- n
Specifies the number of elements to be calculated.
- a
The buffer
a
containing 1st input vector of sizen
.- sa
Slice selector for
a
. See Data Types for a description of the oneMKL slice type.- b
The buffer
b
containing 2nd input vector of sizen
.- sb
Slice selector for
b
. See Data Types for a description of the oneMKL slice type.- sy
Slice selector for
y
. See Data Types for a description of the oneMKL slice type.- mode
Overrides the global VM mode setting for this function call. See set_mode function for possible values and their description. This is an optional parameter. The default value is
mode::not_defined
.
USM API:
- exec_queue
The queue where the routine should be executed.
- n
Specifies the number of elements to be calculated.
- a
Pointer
a
to the 1st input vector of sizen
.- sa
Slice selector for
a
. See Data Types for a description of the oneMKL slice type.- b
Pointer
b
to the 2nd input vector of sizen
.- sb
Slice selector for
b
. See Data Types for a description of the oneMKL slice type.- sy
Slice selector for
y
. See Data Types for a description of the oneMKL slice type.- depends
Vector of dependent events (to wait for input data to be ready).
- mode
Overrides the global VM mode setting for this function call. See the set_mode function for possible values and their description. This is an optional parameter. The default value is
mode::not_defined
.
Output Parameters
Buffer API:
- y
The buffer
y
containing the output vector of sizen
.
USM API:
- y
Pointer
y
to the output vector of sizen
.- return value (event)
Function end event.
Example
An example of how to use maxmagcan be found in the Intel® oneMKL installation directory, under:
examples/dpcpp/vml/source/vmaxmag.cpp