//===----------------------------------------------------------------------===//
//
// Part of libcu++, the C++ Standard Library for your entire system,
// 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
// SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//

// MIT License
//
// Modifications Copyright (C) 2025 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

#ifndef _LIBCUDACXX___CMATH_ISNORMAL_H
#define _LIBCUDACXX___CMATH_ISNORMAL_H

#include <cuda/std/detail/__config>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header

#include <cuda/std/__cmath/fpclassify.h>
#include <cuda/std/__concepts/concept_macros.h>
#include <cuda/std/__floating_point/nvfp_types.h>
#include <cuda/std/__type_traits/is_integral.h>

_LIBCUDACXX_BEGIN_NAMESPACE_STD

_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(float __x) noexcept
{
#if defined(_CCCL_BUILTIN_ISNORMAL)
  return _CCCL_BUILTIN_ISNORMAL(__x);
#else // ^^^ _CCCL_BUILTIN_ISNORMAL ^^^ / vvv !_CCCL_BUILTIN_ISNORMAL vvv
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
#endif // !_CCCL_BUILTIN_ISNORMAL
}

_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(double __x) noexcept
{
#if defined(_CCCL_BUILTIN_ISNORMAL)
  return _CCCL_BUILTIN_ISNORMAL(__x);
#else // ^^^ _CCCL_BUILTIN_ISNORMAL ^^^ / vvv !_CCCL_BUILTIN_ISNORMAL vvv
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
#endif // !_CCCL_BUILTIN_ISNORMAL
}

#if _CCCL_HAS_LONG_DOUBLE()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(long double __x) noexcept
{
#  if defined(_CCCL_BUILTIN_ISNORMAL)
  return _CCCL_BUILTIN_ISNORMAL(__x);
#  else // ^^^ _CCCL_BUILTIN_ISNORMAL ^^^ / vvv !_CCCL_BUILTIN_ISNORMAL vvv
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
#  endif // !_CCCL_BUILTIN_ISNORMAL
}
#endif // _CCCL_HAS_LONG_DOUBLE()

#if _CCCL_HAS_NVFP16()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__half __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP16()

#if _CCCL_HAS_NVBF16()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__hip_bfloat16 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVBF16()

#if _CCCL_HAS_NVFP8_E4M3()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__nv_fp8_e4m3 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP8_E4M3()

#if _CCCL_HAS_NVFP8_E5M2()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__nv_fp8_e5m2 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP8_E5M2()

#if _CCCL_HAS_NVFP8_E8M0()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__nv_fp8_e8m0 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP8_E8M0()

#if _CCCL_HAS_NVFP6_E2M3()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__nv_fp6_e2m3 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP6_E2M3()

#if _CCCL_HAS_NVFP6_E3M2()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__nv_fp6_e3m2 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP6_E3M2()

#if _CCCL_HAS_NVFP4_E2M1()
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(__nv_fp4_e2m1 __x) noexcept
{
  return _CUDA_VSTD::fpclassify(__x) == FP_NORMAL;
}
#endif // _CCCL_HAS_NVFP4_E2M1()

_CCCL_TEMPLATE(class _Tp)
_CCCL_REQUIRES(_CCCL_TRAIT(is_integral, _Tp))
_CCCL_NODISCARD _LIBCUDACXX_HIDE_FROM_ABI constexpr bool isnormal(_Tp __x) noexcept
{
  return __x != 0;
}

_LIBCUDACXX_END_NAMESPACE_STD

#endif // _LIBCUDACXX___CMATH_ISNORMAL_H
