830c0b9023
Move the closure of the subset of flang/runtime/*.h header files that are referenced by source files outside flang/runtime (apart from unit tests) into a new directory (flang/include/flang/Runtime) so that relative include paths into ../runtime need not be used. flang/runtime/pgmath.h.inc is moved to flang/include/flang/Evaluate; it's not used by the runtime. Differential Revision: https://reviews.llvm.org/D109107
47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
//===-- runtime/main.cpp --------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "flang/Runtime/main.h"
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#include "environment.h"
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#include "terminator.h"
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#include <cfenv>
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#include <cstdio>
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#include <cstdlib>
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static void ConfigureFloatingPoint() {
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#ifdef feclearexcept // a macro in some environments; omit std::
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feclearexcept(FE_ALL_EXCEPT);
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#else
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std::feclearexcept(FE_ALL_EXCEPT);
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#endif
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#ifdef fesetround
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fesetround(FE_TONEAREST);
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#else
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std::fesetround(FE_TONEAREST);
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#endif
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}
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extern "C" {
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void RTNAME(ProgramStart)(int argc, const char *argv[], const char *envp[]) {
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std::atexit(Fortran::runtime::NotifyOtherImagesOfNormalEnd);
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Fortran::runtime::executionEnvironment.Configure(argc, argv, envp);
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ConfigureFloatingPoint();
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// I/O is initialized on demand so that it works for non-Fortran main().
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}
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void RTNAME(ByteswapOption)() {
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if (Fortran::runtime::executionEnvironment.conversion ==
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Fortran::runtime::Convert::Unknown) {
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// The environment variable overrides the command-line option;
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// either of them take precedence over explicit OPEN(CONVERT=) specifiers.
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Fortran::runtime::executionEnvironment.conversion =
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Fortran::runtime::Convert::Swap;
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}
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}
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}
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