dotc

oneMKL - Data Parallel C++ Developer Reference

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ID 772045

Date 10/31/2024

Version

Public

Visible to Intel only — GUID: GUID-A558F709-5B8F-4EDD-943A-C3F5A4FB25CB

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dotc

Computes the dot product of two complex vectors, conjugating the first vector.

Description

The dotc routines perform a dot product between two complex vectors, conjugating the first one. The operation is defined as:

dotc supports the following precisions:

T
`std::complex<float>`
`std::complex<double>`

dotc (Buffer Version)

Syntax

namespace oneapi::mkl::blas::column_major {
    void dotc(sycl::queue &queue,
              std::int64_t n,
              sycl::buffer<T,1> &x,
              std::int64_t incx,
              sycl::buffer<T,1> &y,
              std::int64_t incy,
              sycl::buffer<T,1> &result)
}

namespace oneapi::mkl::blas::row_major {
    void dotc(sycl::queue &queue,
              std::int64_t n,
              sycl::buffer<T,1> &x,
              std::int64_t incx,
              sycl::buffer<T,1> &y,
              std::int64_t incy,
              sycl::buffer<T,1> &result)
}

Input Parameters

queue: The queue where the routine should be executed.
n: The number of elements in vectors x and y.
x: Buffer holding input vector x. Size of the buffer must be at least (1 + (n - 1)*abs(incx)). See Matrix Storage for more details.
incx: The stride of vector x.
y: Buffer holding input vector y. Size of the buffer must be at least (1 + (n - 1)*abs(incy)). See Matrix Storage for more details.
incy: The stride of vector y.

Output Parameters

result: The buffer where the result (a scalar) is stored.

dotc (USM Version)

Syntax

namespace oneapi::mkl::blas::column_major {
    sycl::event dotc(sycl::queue &queue,
                     std::int64_t n,
                     const T *x,
                     std::int64_t incx,
                     const T *y,
                     std::int64_t incy,
                     T *result,
                     const std::vector<sycl::event> &dependencies = {})
}

namespace oneapi::mkl::blas::row_major {
    sycl::event dotc(sycl::queue &queue,
                     std::int64_t n,
                     const T *x,
                     std::int64_t incx,
                     const T *y,
                     std::int64_t incy,
                     T *result,
                     const std::vector<sycl::event> &dependencies = {})
}

Input Parameters

queue: The queue where the routine should be executed.
n: The number of elements in vectors x and y.
x: Pointer to input vector x. Size of the array holding input vector x must be at least (1 + (n - 1)*abs(incx)). See Matrix Storage for more details.
incx: The stride of vector x.
y: Pointer to input vector y. Size of the array holding input vector y must be at least (1 + (n - 1)*abs(incy)). See Matrix Storage for more details.
incy: The stride of vector y.
dependencies: List of events to wait for before starting computation, if any. If omitted, defaults to no dependencies.

Output Parameters

result: The pointer to where the result (a scalar) is stored.

Return Values

Output event to wait on to ensure computation is complete.

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oneMKL - Data Parallel C++ Developer Reference

dotc

Description

dotc (Buffer Version)

dotc (USM Version)