1/*===-- complex --- OpenMP complex wrapper for target regions --------- c++ -===
2 *
3 * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 * See https://llvm.org/LICENSE.txt for license information.
5 * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 *
7 *===-----------------------------------------------------------------------===
8 */
9
10#ifndef __CLANG_OPENMP_COMPLEX__
11#define __CLANG_OPENMP_COMPLEX__
12
13#ifndef _OPENMP
14#error "This file is for OpenMP compilation only."
15#endif
16
17// We require std::math functions in the complex builtins below.
18#include <cmath>
19
20#define __CUDA__
21#define __OPENMP_NVPTX__
22#include <__clang_cuda_complex_builtins.h>
23#undef __OPENMP_NVPTX__
24#endif
25
26// Grab the host header too.
27#include_next <complex>
28
29
30#ifdef __cplusplus
31
32// If we are compiling against libc++, the macro _LIBCPP_STD_VER should be set
33// after including <cmath> above. Since the complex header we use is a
34// simplified version of the libc++, we don't need it in this case. If we
35// compile against libstdc++, or any other standard library, we will overload
36// the (hopefully template) functions in the <complex> header with the ones we
37// got from libc++ which decomposes math functions, like `std::sin`, into
38// arithmetic and calls to non-complex functions, all of which we can then
39// handle.
40#ifndef _LIBCPP_STD_VER
41
42#pragma omp begin declare variant match(                                       \
43    device = {arch(nvptx, nvptx64)},                                           \
44    implementation = {extension(match_any, allow_templates)})
45
46#include <complex_cmath.h>
47
48#pragma omp end declare variant
49
50#endif
51
52#endif
53