text: //===-- Implementation header for sigprocmask -------------------*- 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_SIGNAL_SIGPROCMASK_H
  #define LLVM_LIBC_SRC_SIGNAL_SIGPROCMASK_H
  
  #include "include/signal.h"
  
  namespace __llvm_libc {
  
  int sigprocmask(int how, const sigset_t *__restrict set,
                  sigset_t *__restrict oldset);
  
  } // namespace __llvm_libc
  
  #endif // LLVM_LIBC_SRC_SIGNAL_SIGPROCMASK_H
  