Home | History | Annotate | Line # | Download | only in openmp_wrappers 
      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