Computes absolute value of vector elements.
Buffer API:
void abs(queue& exec_queue, int64_t n, buffer<T,1>& a, buffer<T,1>& y, uint64_t mode = mode::not_defined );
USM API:
event abs(queue& exec_queue, int64_t n, T* a, T* y, vector_class<event>* depends, uint64_t mode = mode::not_defined );
abs supports the following precisions and devices:
T | Devices supported |
---|---|
float | Host, CPU, and GPU |
double | Host, CPU, and GPU |
std::complex<float> | Host, CPU, and GPU |
std::complex<double> | Host, CPU, and GPU |
The abs(a) function computes an absolute value of vector elements.
Argument | Result | Error Code |
---|---|---|
+0 | +0 | |
-0 | +0 | |
+∞ | +∞ | |
-∞ | +∞ | |
QNAN | QNAN | |
SNAN | QNAN |
Specifications for special values of the complex functions are defined according to the following formula
abs(a) = hypot(RE(a),IM(a)).
The abs function does not generate any errors.
Buffer API:
The queue where the routine should be executed.
Specifies the number of elements to be calculated.
The buffer a containing input vector of size n.
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:
The queue where the routine should be executed.
Specifies the number of elements to be calculated.
Pointer a to the input vector of size n.
Vector of dependent events (to wait for input data to be ready).
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.
Buffer API:
The buffer y containing the output vector of size n.
USM API:
Pointer y to the output vector of size n.
Function end event.
An example of how to use abscan be found in the Intel® oneMKL installation directory, under:
examples/sycl/vml/vabs.cpp