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Visible to Intel only — GUID: GUID-BB12D1A7-F2B3-4D0E-8DF1-35E846905E1A
Visible to Intel only — GUID: GUID-BB12D1A7-F2B3-4D0E-8DF1-35E846905E1A
fmod
Computes the element-wise remainder of vector a elements divided by vector b elements that has the same sign as vector a elements.
Description
The fmod (a,b) function computes the modulus function of each element of vector a, with respect to the corresponding elements of vector b:
ai - bi*trunc(ai/bi)
In general, the modulus function fmod (ai, bi) returns the value ai - n*bi for some integer n such that if bi is nonzero, the result has the same sign as ai and a magnitude less than the magnitude of bi.
Argument 1 |
Argument 2 |
Result |
Error Code |
|---|---|---|---|
a not NAN |
±0 |
NAN |
status::sing |
± |
b not NAN |
NAN |
status::sing |
±0 |
b≠ 0, not NAN |
±0 |
|
a finite |
± |
a |
|
NAN |
b |
||
a |
NAN |
NAN |
API
Syntax
Buffer API
namespace oneapi::mkl::vm {
sycl::event fmod(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,
oneapi::mkl::vm::error_handler<T> errhandler = {});
}
namespace oneapi::mkl::vm {
sycl::event fmod(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,
oneapi::mkl::vm::error_handler<T> errhandler = {});
}
USM API
namespace oneapi::mkl::vm {
sycl::event fmod(sycl::queue & exec_queue,
std::int64_t n,
T const * a,
T const * b,
T * y,
std::vector<sycl::event> const & depends = {},
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined,
oneapi::mkl::vm::error_handler<T> errhandler = {});
}
namespace oneapi::mkl::vm {
sycl::event fmod(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<sycl::event> const & depends = {},
oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined,
oneapi::mkl::vm::error_handler<T> errhandler = {});
}
fmod supports the following precisions and devices:
T |
Devices supported |
|---|---|
float |
CPU and GPU |
double |
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.
- errhandler
-
Sets local error handling mode for this function call. See the create_error_handler function for arguments and their descriptions. This is an optional parameter. The local error handler is disabled by default.
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).
- 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.
- errhandler
-
Sets local error handling mode for this function call. See the create_error_handler function for arguments and their descriptions. This is an optional parameter. The local error handler is disabled by default.
Output Parameters
Buffer API
- y
-
The buffer containing the output vector of size n.
- return value (event)
-
Computation end event.
USM API
- y
-
Pointer to the output vector of size n.
- return value (event)
-
Computation end event.
Examples
An example of how to use fmod can be found in the oneMKL installation directory, under:
examples/dpcpp/vml/source/vfmod.cpp