text: // -*- C++ -*-
  //===----------------------------------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  #ifndef _PSTL_CONFIG_H
  #define _PSTL_CONFIG_H
  
  #include <__pstl_config_site>
  
  // The version is XYYZ, where X is major, YY is minor, and Z is patch (i.e. X.YY.Z)
  #define _PSTL_VERSION 14000
  #define _PSTL_VERSION_MAJOR (_PSTL_VERSION / 1000)
  #define _PSTL_VERSION_MINOR ((_PSTL_VERSION % 1000) / 10)
  #define _PSTL_VERSION_PATCH (_PSTL_VERSION % 10)
  
  #if !defined(_PSTL_PAR_BACKEND_SERIAL) && !defined(_PSTL_PAR_BACKEND_TBB)
  #    error "A parallel backend must be specified"
  #endif
  
  // Check the user-defined macro for warnings
  #if defined(PSTL_USAGE_WARNINGS)
  #    define _PSTL_USAGE_WARNINGS
  #endif
  
  #if !defined(_PSTL_ASSERT)
  #    include <cassert>
  #    define _PSTL_ASSERT(pred) (assert((pred)))
  #endif
  
  // Portability "#pragma" definition
  #ifdef _MSC_VER
  #    define _PSTL_PRAGMA(x) __pragma(x)
  #else
  #    define _PSTL_PRAGMA(x) _Pragma(#    x)
  #endif
  
  #define _PSTL_STRING_AUX(x) #x
  #define _PSTL_STRING(x) _PSTL_STRING_AUX(x)
  #define _PSTL_STRING_CONCAT(x, y) x #y
  
  #ifdef _PSTL_HIDE_FROM_ABI_PER_TU
  #    define _PSTL_HIDE_FROM_ABI_PUSH                                                                                   \
          _Pragma("clang attribute push(__attribute__((internal_linkage)), apply_to=any(function,record))")
  #    define _PSTL_HIDE_FROM_ABI_POP _Pragma("clang attribute pop")
  #else
  #    define _PSTL_HIDE_FROM_ABI_PUSH /* nothing */
  #    define _PSTL_HIDE_FROM_ABI_POP  /* nothing */
  #endif
  
  // note that when ICC or Clang is in use, _PSTL_GCC_VERSION might not fully match
  // the actual GCC version on the system.
  #define _PSTL_GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
  
  #if defined(__clang__)
  // according to clang documentation, version can be vendor specific
  #    define _PSTL_CLANG_VERSION (__clang_major__ * 10000 + __clang_minor__ * 100 + __clang_patchlevel__)
  #endif
  
  // Enable SIMD for compilers that support OpenMP 4.0
  #if (defined(_OPENMP) && _OPENMP >= 201307) || \
      (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1600) || \
      (!defined(__INTEL_COMPILER) && _PSTL_GCC_VERSION >= 40900) || \
      defined(__clang__)
  #    define _PSTL_PRAGMA_SIMD _PSTL_PRAGMA(omp simd)
  #    define _PSTL_PRAGMA_DECLARE_SIMD _PSTL_PRAGMA(omp declare simd)
  #    define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) _PSTL_PRAGMA(omp simd reduction(PRM))
  #elif !defined(_MSC_VER) //#pragma simd
  #    define _PSTL_PRAGMA_SIMD _PSTL_PRAGMA(simd)
  #    define _PSTL_PRAGMA_DECLARE_SIMD
  #    define _PSTL_PRAGMA_SIMD_REDUCTION(PRM) _PSTL_PRAGMA(simd reduction(PRM))
  #else //no simd
  #    define _PSTL_PRAGMA_SIMD
  #    define _PSTL_PRAGMA_DECLARE_SIMD
  #    define _PSTL_PRAGMA_SIMD_REDUCTION(PRM)
  #endif //Enable SIMD
  
  #if defined(__INTEL_COMPILER)
  #    define _PSTL_PRAGMA_FORCEINLINE _PSTL_PRAGMA(forceinline)
  #else
  #    define _PSTL_PRAGMA_FORCEINLINE
  #endif
  
  #if defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1900
  #    define _PSTL_PRAGMA_SIMD_SCAN(PRM) _PSTL_PRAGMA(omp simd reduction(inscan, PRM))
  #    define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM) _PSTL_PRAGMA(omp scan inclusive(PRM))
  #    define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM) _PSTL_PRAGMA(omp scan exclusive(PRM))
  #else
  #    define _PSTL_PRAGMA_SIMD_SCAN(PRM)
  #    define _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN(PRM)
  #    define _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN(PRM)
  #endif
  
  // Should be defined to 1 for environments with a vendor implementation of C++17 execution policies
  #define _PSTL_CPP17_EXECUTION_POLICIES_PRESENT (_MSC_VER >= 1912)
  
  #if (defined(_MSC_VER) && _MSC_VER >= 1900) || \
      __cplusplus >= 201300L || \
      __cpp_lib_robust_nonmodifying_seq_ops == 201304
  #   define _PSTL_CPP14_2RANGE_MISMATCH_EQUAL_PRESENT
  #endif
  #if (defined(_MSC_VER) && _MSC_VER >= 1900) || \
      __cplusplus >= 201402L || \
      __cpp_lib_make_reverse_iterator == 201402
  #   define _PSTL_CPP14_MAKE_REVERSE_ITERATOR_PRESENT
  #endif
  #if (defined(_MSC_VER) && _MSC_VER >= 1900) || __cplusplus >= 201402L
  #   define _PSTL_CPP14_INTEGER_SEQUENCE_PRESENT
  #endif
  #if (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1700) || \
      (defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 190023918) || \
      __cplusplus >= 201402L
  #   define _PSTL_CPP14_VARIABLE_TEMPLATES_PRESENT
  #endif
  
  #if defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1800
  #   define _PSTL_EARLYEXIT_PRESENT
  #   define _PSTL_MONOTONIC_PRESENT
  #endif
  
  #if (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1900) || \
      (!defined(__INTEL_COMPILER) && _PSTL_GCC_VERSION >= 40900) || \
      (defined(_OPENMP) && _OPENMP >= 201307)
  #    define _PSTL_UDR_PRESENT
  #endif
  
  #if defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1900 && __INTEL_COMPILER_BUILD_DATE >= 20180626
  #   define _PSTL_UDS_PRESENT
  #endif
  
  #if defined(_PSTL_EARLYEXIT_PRESENT)
  #    define _PSTL_PRAGMA_SIMD_EARLYEXIT _PSTL_PRAGMA(omp simd early_exit)
  #else
  #    define _PSTL_PRAGMA_SIMD_EARLYEXIT
  #endif
  
  #if defined(_PSTL_MONOTONIC_PRESENT)
  #    define _PSTL_PRAGMA_SIMD_ORDERED_MONOTONIC(PRM) _PSTL_PRAGMA(omp ordered simd monotonic(PRM))
  #    define _PSTL_PRAGMA_SIMD_ORDERED_MONOTONIC_2ARGS(PRM1, PRM2) _PSTL_PRAGMA(omp ordered simd monotonic(PRM1, PRM2))
  #else
  #    define _PSTL_PRAGMA_SIMD_ORDERED_MONOTONIC(PRM)
  #    define _PSTL_PRAGMA_SIMD_ORDERED_MONOTONIC_2ARGS(PRM1, PRM2)
  #endif
  
  // Declaration of reduction functor, where
  // NAME - the name of the functor
  // OP - type of the callable object with the reduction operation
  // omp_in - refers to the local partial result
  // omp_out - refers to the final value of the combiner operator
  // omp_priv - refers to the private copy of the initial value
  // omp_orig - refers to the original variable to be reduced
  #define _PSTL_PRAGMA_DECLARE_REDUCTION(NAME, OP)                                                                       \
      _PSTL_PRAGMA(omp declare reduction(NAME:OP : omp_out(omp_in)) initializer(omp_priv = omp_orig))
  
  #if defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 1600
  #    define _PSTL_PRAGMA_VECTOR_UNALIGNED _PSTL_PRAGMA(vector unaligned)
  #else
  #    define _PSTL_PRAGMA_VECTOR_UNALIGNED
  #endif
  
  // Check the user-defined macro to use non-temporal stores
  #if defined(PSTL_USE_NONTEMPORAL_STORES) && (__INTEL_COMPILER >= 1600)
  #    define _PSTL_USE_NONTEMPORAL_STORES_IF_ALLOWED _PSTL_PRAGMA(vector nontemporal)
  #else
  #    define _PSTL_USE_NONTEMPORAL_STORES_IF_ALLOWED
  #endif
  
  #if defined(_MSC_VER) || defined(__INTEL_COMPILER) // the preprocessors don't type a message location
  #    define _PSTL_PRAGMA_LOCATION __FILE__ ":" _PSTL_STRING(__LINE__) ": [Parallel STL message]: "
  #else
  #    define _PSTL_PRAGMA_LOCATION " [Parallel STL message]: "
  #endif
  
  #define _PSTL_PRAGMA_MESSAGE_IMPL(x) _PSTL_PRAGMA(message(_PSTL_STRING_CONCAT(_PSTL_PRAGMA_LOCATION, x)))
  
  #if defined(_PSTL_USAGE_WARNINGS)
  #    define _PSTL_PRAGMA_MESSAGE(x) _PSTL_PRAGMA_MESSAGE_IMPL(x)
  #    define _PSTL_PRAGMA_MESSAGE_POLICIES(x) _PSTL_PRAGMA_MESSAGE_IMPL(x)
  #else
  #    define _PSTL_PRAGMA_MESSAGE(x)
  #    define _PSTL_PRAGMA_MESSAGE_POLICIES(x)
  #endif
  
  // broken macros
  #if (defined(__GLIBCXX__) && __GLIBCXX__ < 20150716) || \
      (defined(_MSC_VER) && _MSC_VER < 1800)
  #   define _PSTL_CPP11_STD_ROTATE_BROKEN
  #endif
  
  #if defined(__INTEL_COMPILER) && __INTEL_COMPILER == 1800
  #   define _PSTL_ICC_18_OMP_SIMD_BROKEN
  #endif
  
  #endif /* _PSTL_CONFIG_H */
  