llvm/libc/src/__support/ctype_utils.h

//===-- Collection of utils for implementing ctype functions-------*-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_CTYPE_UTILS_H
#define LLVM_LIBC_SRC___SUPPORT_CTYPE_UTILS_H

#include "src/__support/macros/attributes.h"
#include "src/__support/macros/config.h"

namespace LIBC_NAMESPACE_DECL {
namespace internal {

// ------------------------------------------------------
// Rationale: Since these classification functions are
// called in other functions, we will avoid the overhead
// of a function call by inlining them.
// ------------------------------------------------------

LIBC_INLINE static constexpr bool isalpha(unsigned ch) { … }

LIBC_INLINE static constexpr bool isdigit(unsigned ch) { … }

LIBC_INLINE static constexpr bool isalnum(unsigned ch) { … }

LIBC_INLINE static constexpr bool isgraph(unsigned ch) { … }

LIBC_INLINE static constexpr bool islower(unsigned ch) { … }

LIBC_INLINE static constexpr bool isupper(unsigned ch) { … }

LIBC_INLINE static constexpr bool isspace(unsigned ch) { … }

LIBC_INLINE static constexpr int tolower(int ch) { … }

} // namespace internal
} // namespace LIBC_NAMESPACE_DECL

#endif //  LLVM_LIBC_SRC___SUPPORT_CTYPE_UTILS_H