.. SPDX-FileCopyrightText: 2019-2020 Intel Corporation .. .. SPDX-License-Identifier: CC-BY-4.0 .. _onemkl_vm_nextafter: nextafter ========= .. container:: Returns vector of elements containing the next representable floating-point values following the values from the elements of one vector in the direction of the corresponding elements of another vector. .. container:: section .. rubric:: Syntax :class: sectiontitle Buffer API: .. code-block:: cpp namespace oneapi::mkl::vm { sycl::event nextafter( sycl::queue& exec_queue, std::int64_t n, sycl::buffer& a, sycl::buffer& b, sycl::buffer& y, oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined, oneapi::mkl::vm::error_handler errhandler = {}); } // namespace oneapi::mkl::vm USM API: .. code-block:: cpp namespace oneapi::mkl::vm { sycl::event nextafter( sycl::queue& exec_queue, std::int64_t n, const T *a, const T *b, T* y, std::vector const & depends = {}, oneapi::mkl::vm::mode mode = oneapi::mkl::vm::mode::not_defined, oneapi::mkl::vm::error_handler errhandler = {}); } // namespace oneapi::mkl::vm ``nextafter`` supports the following precisions. .. list-table:: :header-rows: 1 * - T * - ``float`` * - ``double`` .. container:: section .. rubric:: Description :class: sectiontitle The nextafter(a, b) function returns a vector containing the next representable floating-point values following the first vector argument elements in the direction of the second vector argument's corresponding elements. .. container:: tablenoborder .. list-table:: :header-rows: 1 * - Arguments/Results - Status code * - Input vector argument element is finite and the corresponding result vector element value is infinite - ``oneapi::mkl::vm::status::overflow`` * - Result vector element value is subnormal or zero, and different from the corresponding input vector argument element - ``oneapi::mkl::vm::status::underflow`` Even though underflow or overflow can occur, the returned value is independent of the current rounding direction mode. .. container:: section .. rubric:: Input Parameters :class: sectiontitle 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 :ref:`onemkl_vm_setmode` function for possible values and their description. This is an optional parameter. The default value is ``oneapi::mkl::vm::mode::not_defined``. errhandler Sets local error handling mode for this function call. See the :ref:`onemkl_vm_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 :ref:`onemkl_vm_setmode` function for possible values and their description. This is an optional parameter. The default value is ``oneapi::mkl::vm::mode::not_defined``. errhandler Sets local error handling mode for this function call. See the :ref:`onemkl_vm_create_error_handler` function for arguments and their descriptions. This is an optional parameter. The local error handler is disabled by default. .. container:: section .. rubric:: Output Parameters :class: sectiontitle 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). .. container:: section .. rubric:: Exceptions :class: sectiontitle For list of generated exceptions please refer to  :ref:`onemkl_vm_exceptions` .. container:: familylinks .. container:: parentlink **Parent topic:** :ref:`onemkl_vm_mathematical_functions`