lib: establish Zircon libc++ and KTL foundation

1 files changed, 118 insertions, 0 deletions

diff --git a/third_party/libcxx/include/c++/v1/fenv.h b/third_party/libcxx/include/c++/v1/fenv.h
new file mode 100644
index 0000000..a767269
--- /dev/null
+++ b/third_party/libcxx/include/c++/v1/fenv.h
@@ -0,0 +1,118 @@
+// -*- 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 _LIBCPP_FENV_H
+#define _LIBCPP_FENV_H
+
+/*
+    fenv.h synopsis
+
+This entire header is C99 / C++0X
+
+Macros:
+
+    FE_DIVBYZERO
+    FE_INEXACT
+    FE_INVALID
+    FE_OVERFLOW
+    FE_UNDERFLOW
+    FE_ALL_EXCEPT
+    FE_DOWNWARD
+    FE_TONEAREST
+    FE_TOWARDZERO
+    FE_UPWARD
+    FE_DFL_ENV
+
+Types:
+
+    fenv_t
+    fexcept_t
+
+int feclearexcept(int excepts);
+int fegetexceptflag(fexcept_t* flagp, int excepts);
+int feraiseexcept(int excepts);
+int fesetexceptflag(const fexcept_t* flagp, int excepts);
+int fetestexcept(int excepts);
+int fegetround();
+int fesetround(int round);
+int fegetenv(fenv_t* envp);
+int feholdexcept(fenv_t* envp);
+int fesetenv(const fenv_t* envp);
+int feupdateenv(const fenv_t* envp);
+
+
+*/
+
+#if defined(__cplusplus) && __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
+#  include <__cxx03/__config>
+#else
+#  include <__config>
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#if __has_include_next(<fenv.h>)
+#  include_next <fenv.h>
+#endif
+
+#ifdef __cplusplus
+
+extern "C++" {
+
+#  ifdef feclearexcept
+#    undef feclearexcept
+#  endif
+
+#  ifdef fegetexceptflag
+#    undef fegetexceptflag
+#  endif
+
+#  ifdef feraiseexcept
+#    undef feraiseexcept
+#  endif
+
+#  ifdef fesetexceptflag
+#    undef fesetexceptflag
+#  endif
+
+#  ifdef fetestexcept
+#    undef fetestexcept
+#  endif
+
+#  ifdef fegetround
+#    undef fegetround
+#  endif
+
+#  ifdef fesetround
+#    undef fesetround
+#  endif
+
+#  ifdef fegetenv
+#    undef fegetenv
+#  endif
+
+#  ifdef feholdexcept
+#    undef feholdexcept
+#  endif
+
+#  ifdef fesetenv
+#    undef fesetenv
+#  endif
+
+#  ifdef feupdateenv
+#    undef feupdateenv
+#  endif
+
+} // extern "C++"
+
+#endif // defined(__cplusplus)
+
+#endif // _LIBCPP_FENV_H