atan2¶
Computes four-quadrant inverse tangent of elements of two vectors.
Syntax
Buffer API:
namespace oneapi::mkl::vm {
sycl::event atan2(
sycl::queue& exec_queue,
std::int64_t n,
sycl::buffer<T,1>& a,
sycl::buffer<T,1>& b,
sycl::buffer<T,1>& y,
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined);
} // namespace oneapi::mkl::vm
USM API:
namespace oneapi::mkl::vm {
sycl::event atan2(
sycl::queue& exec_queue,
std::int64_t n,
const T *a,
const T *b,
T* y,
std::vector<sycl::event> const & depends = {},
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined);
} // namespace oneapi::mkl::vm
ad2d
supports the following precisions.
T |
---|
|
|
Description
The atan2(a, b) function computes four-quadrant inverse tangent of elements of two vectors.
The elements of the output vector are computed as the four-quadrant
arctangent of a[i] / b[i]
.
Argument 1 |
Argument 2 |
Result |
Status code |
---|---|---|---|
-∞ |
-∞ |
-3* |
|
-∞ |
b < +0 |
- |
|
-∞ |
-0 |
- |
|
-∞ |
+0 |
- |
|
-∞ |
b > +0 |
- |
|
-∞ |
+∞ |
- |
|
a < +0 |
-∞ |
- |
|
a < +0 |
-0 |
- |
|
a < +0 |
+0 |
- |
|
a < +0 |
+∞ |
-0 |
|
-0 |
-∞ |
- |
|
-0 |
b < +0 |
- |
|
-0 |
-0 |
- |
|
-0 |
+0 |
-0 |
|
-0 |
b > +0 |
-0 |
|
-0 |
+∞ |
-0 |
|
+0 |
-∞ |
+ |
|
+0 |
b < +0 |
+ |
|
+0 |
-0 |
+ |
|
+0 |
+0 |
+0 |
|
+0 |
b > +0 |
+0 |
|
+0 |
+∞ |
+0 |
|
a > +0 |
-∞ |
+ |
|
a > +0 |
-0 |
+ |
|
a > +0 |
+0 |
+ |
|
a > +0 |
+∞ |
+0 |
|
+∞ |
-∞ |
+3* |
|
+∞ |
b < +0 |
+ |
|
+∞ |
-0 |
+ |
|
+∞ |
+0 |
+ |
|
+∞ |
b > +0 |
+ |
|
+∞ |
+∞ |
+ |
|
a > +0 |
QNAN |
QNAN |
|
a > +0 |
SNAN |
QNAN |
|
QNAN |
b > +0 |
QNAN |
|
SNAN |
b > +0 |
QNAN |
|
QNAN |
QNAN |
QNAN |
|
QNAN |
SNAN |
QNAN |
|
SNAN |
QNAN |
QNAN |
|
SNAN |
SNAN |
QNAN |
The atan2(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
.- b
The buffer
b
containing 2nd input vector of sizen
.- 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
oneapi::mkl::vm::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
.- b
Pointer
b
to the 2nd input vector of sizen
.- 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
oneapi::mkl::vm::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)
Event, signifying availability of computed output and status code(s).
Exceptions
For list of generated exceptions please refer to Exceptions
Parent topic: VM Mathematical Functions