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[libc] Add is_scalar #65740

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Merged
merged 1 commit into from
Sep 8, 2023
Merged

[libc] Add is_scalar #65740

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1 change: 1 addition & 0 deletions libc/src/__support/CPP/type_traits.h
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,7 @@
#include "src/__support/CPP/type_traits/is_reference.h"
#include "src/__support/CPP/type_traits/is_rvalue_reference.h"
#include "src/__support/CPP/type_traits/is_same.h"
#include "src/__support/CPP/type_traits/is_scalar.h"
#include "src/__support/CPP/type_traits/is_signed.h"
#include "src/__support/CPP/type_traits/is_trivially_constructible.h"
#include "src/__support/CPP/type_traits/is_trivially_copyable.h"
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32 changes: 32 additions & 0 deletions libc/src/__support/CPP/type_traits/is_scalar.h
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@@ -0,0 +1,32 @@
//===-- is_scalar type_traits -----------------------------------*- 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 LLVM_LIBC_SRC_SUPPORT_CPP_TYPE_TRAITS_IS_SCALAR_H
#define LLVM_LIBC_SRC_SUPPORT_CPP_TYPE_TRAITS_IS_SCALAR_H

#include "src/__support/CPP/type_traits/bool_constant.h"
#include "src/__support/CPP/type_traits/is_arithmetic.h"
#include "src/__support/CPP/type_traits/is_enum.h"
#include "src/__support/CPP/type_traits/is_member_pointer.h"
#include "src/__support/CPP/type_traits/is_null_pointer.h"
#include "src/__support/CPP/type_traits/is_pointer.h"
#include "src/__support/macros/attributes.h"

namespace __llvm_libc::cpp {

// is_scalar
template <class T>
struct is_scalar
: cpp::bool_constant<cpp::is_arithmetic_v<T> || cpp::is_enum_v<T> ||
cpp::is_pointer_v<T> || cpp::is_member_pointer_v<T> ||
cpp::is_null_pointer_v<T>> {};
template <class T>
LIBC_INLINE_VAR constexpr bool is_scalar_v = is_scalar<T>::value;

} // namespace __llvm_libc::cpp

#endif // LLVM_LIBC_SRC_SUPPORT_CPP_TYPE_TRAITS_IS_SCALAR_H
1 change: 1 addition & 0 deletions utils/bazel/llvm-project-overlay/libc/BUILD.bazel
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Expand Up @@ -313,6 +313,7 @@ libc_support_library(
"src/__support/CPP/type_traits/is_reference.h",
"src/__support/CPP/type_traits/is_rvalue_reference.h",
"src/__support/CPP/type_traits/is_same.h",
"src/__support/CPP/type_traits/is_scalar.h",
"src/__support/CPP/type_traits/is_signed.h",
"src/__support/CPP/type_traits/is_trivially_constructible.h",
"src/__support/CPP/type_traits/is_trivially_copyable.h",
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