topic Quadruple Precision Floating-Point in Intel® oneAPI DPC++/C++ Compiler

Quadruple Precision Floating-Point

idkcomp — Thu, 25 Apr 2024 16:25:08 GMT

I have been working a project using Microsoft Visual Studio for 14 years now. I have come to a point where I need quadruple precision (128-bit) floating point to get the right answers. The Microsoft C++ compiler does not support this. I have seen remarks that the Intel C++ compiler does and integrates well into Visual Studio. Does the Intel C++ compiler indeed support 128-bit floating point arithmetic?

Re: Quadruple Precision Floating-Point

Viet_H_Intel — Fri, 03 May 2024 15:44:25 GMT

Is this what you are looking for?

#include<stdio.h>

_Quad f (_Quad x, _Quad y, _Quad z) {

return x * y + z;

}

> icx t.c -c /Qoption,cpp,--extended_float_types
Intel(R) oneAPI DPC++/C++ Compiler for applications running on Intel(R) 64, Version 2024.0.2 Build 20231213
Copyright (C) 1985-2023 Intel Corporation. All rights reserved.