Computes a rounded integer value in the current rounding mode.
Buffer API:
void rint(queue& exec_queue, int64_t n, buffer<T,1>& a, buffer<T,1>& y, uint64_t mode = mode::not_defined );
USM API:
event rint(queue& exec_queue, int64_t n, T* a, T* y, vector_class<event>* depends, uint64_t mode = mode::not_defined );
rint supports the following precisions and devices:
T | Devices supported |
---|---|
float | Host, CPU, and GPU |
double | Host, CPU, and GPU |
The rint(a) function computes a rounded floating-point integer value using the current rounding mode for each vector element.
The rounding mode affects the results computed for inputs that fall between consecutive integers. For example:
f(0.5) = 0, for rounding modes set to round to nearest round toward zero or to minus infinity.
f(0.5) = 1, for rounding modes set to plus infinity.
f(-1.5) = -2, for rounding modes set to round to nearest or to minus infinity.
f(-1.5) = -1, for rounding modes set to round toward zero or to plus infinity.
Argument | Result | Error Code |
---|---|---|
+0 | +0 | |
-0 | -0 | |
+∞ | +∞ | |
-∞ | -∞ | |
QNAN | QNAN | |
SNAN | QNAN |
The rint 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 rintcan be found in the Intel® oneMKL installation directory, under:
examples/sycl/vml/vrint.cpp