Contents

# hypot

Computes the element-wise square root of the sum of the squares of vector
a
elements and vector
b
elements.

## Description

The
hypot(a,b)
function computes a square root of sum of two squared elements.
Argument 1
Argument 2
Result
Error Code
+0
+0
+0
-0
-0
+0
+
any value
+
any value
+
+
SNAN
any value
QNAN
INVALID
any value
SNAN
QNAN
INVALID
QNAN
any value
QNAN
any value
QNAN
QNAN
Data Type
Threshold Limitations on Input Parameters
single precision
abs(a[i]) < sqrt(FLT_MAX)
abs(b[i]) < sqrt(FLT_MAX)
double precision
abs(a[i]) < sqrt(DBL_MAX)
abs(b[i]) < sqrt(DBL_MAX)
The
hypot(a,b)
function does not generate any errors.

## API

Syntax
Buffer API
``````namespace oneapi::mkl::vm {

sycl::event hypot(sycl::queue & exec_queue,
std::int64_t n,
sycl::buffer<T> & a,
sycl::buffer<T> & b,
sycl::buffer<T> & y,
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined);

}``````
``````namespace oneapi::mkl::vm {

sycl::event hypot(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 mode = oneapi::mkl::vm::mode::not_defined);

}``````
USM API
``````namespace oneapi::mkl::vm {

sycl::event hypot(sycl::queue & exec_queue,
std::int64_t n,
T const * a,
T const * b,
T * y,
std::vector<cl::sycl::event> const & depends = {},
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined);

}``````
``````namespace oneapi::mkl::vm {

sycl::event hypot(sycl::queue & exec_queue,
T const * a,
oneapi::mkl::slice sa,
T const * b,
oneapi::mkl::slice sb,
T * y,
oneapi::mkl::slice sy,
std::vector<cl::sycl::event> const & depends = {},
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined);

}``````
hypot
supports the following precisions and devices:
T
Devices supported
float
Host, CPU, and GPU
double
Host, CPU, and GPU
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 containing the 1st input vector.
sa
Slice selector for
a
. See Data Types for a description of the oneMKL slice type.
b
The buffer containing the 2nd input vector.
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 to the 1st input vector.
sa
Slice selector for
a
. See Data Types for a description of the oneMKL slice type.
b
Pointer to the 2nd input vector.
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). This is an optional parameter. The default is an empty vector.
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 containing the output vector.
return value (event)
Computation end event.
USM API
y
Pointer to the output vector.
return value (event)
Computation end event.

## Examples

An example of how to use
hypot
can be found in the oneMKL installation directory, under:
``examples/dpcpp/vml/source/vhypot.cpp``

#### Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.