fmod#

The fmod function performs element by element computation of the modulus function of vector a with respect to vector b.

Syntax

Buffer API:

namespace oneapi::math::vm {

sycl::event fmod(
        sycl::queue& exec_queue,
        std::int64_t n,
        sycl::buffer<T,1>& a,
        sycl::buffer<T,1>& b,
        sycl::buffer<T,1>& y,
        oneapi::math::vm::mode mode = oneapi::math::vm::mode::not_defined,
        oneapi::math::vm::error_handler<T> errhandler = {});

} // namespace oneapi::math::vm

USM API:

namespace oneapi::math::vm {

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

} // namespace oneapi::math::vm

fmod supports the following precisions.

T
`float`
`double`

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 b_i is nonzero, the result has the same sign as a_i and a magnitude less than the magnitude of b_i.

Argument 1	Argument 2	Result	Status code
`a` not NAN	±0	NAN	`oneapi::math::vm::status::sing`
±∞	`b` not NAN	NAN	`oneapi::math::vm::status::sing`
±0	`b`≠ 0, not NAN	±0
`a` finite	±∞	`a`
NAN	`b`
`a`	NAN	NAN

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 size n.
b: The buffer b containing 2nd input vector of size n.
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::math::vm::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 a to the 1st input vector of size n.
b: Pointer b to the 2nd input vector of size n.
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::math::vm::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 y containing the output vector of size n.

USM API:

y: Pointer y to the output vector of size n.
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