view flang/runtime/main.cpp @ 173:0572611fdcc8 llvm10 llvm12

reorgnization done
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 11:55:54 +0900 (2020-05-25)
parents
children 2e18cbf3894f
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//===-- runtime/main.cpp ----------------------------------------*- 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
//
//===----------------------------------------------------------------------===//

#include "main.h"
#include "environment.h"
#include "terminator.h"
#include <cfenv>
#include <cstdio>
#include <cstdlib>

static void ConfigureFloatingPoint() {
#ifdef feclearexcept // a macro in some environments; omit std::
  feclearexcept(FE_ALL_EXCEPT);
#else
  std::feclearexcept(FE_ALL_EXCEPT);
#endif
#ifdef fesetround
  fesetround(FE_TONEAREST);
#else
  std::fesetround(FE_TONEAREST);
#endif
}

extern "C" {
void RTNAME(ProgramStart)(int argc, const char *argv[], const char *envp[]) {
  std::atexit(Fortran::runtime::NotifyOtherImagesOfNormalEnd);
  Fortran::runtime::executionEnvironment.Configure(argc, argv, envp);
  ConfigureFloatingPoint();
  // I/O is initialized on demand so that it works for non-Fortran main().
}
}