Intel® FPGA SDK for OpenCL™ Pro Edition: Programming Guide

ID 683846
Date 10/04/2021

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5.11. Enabling Double Precision Floating-Point Operations

The Intel® FPGA SDK for OpenCL™ offers preliminary support for all double precision floating-point functions.

Before declaring any double precision floating-point data type in your OpenCL kernel, include the following OPENCL EXTENSION pragma in your kernel code:

#pragma OPENCL EXTENSION cl_khr_fp64 : enable