lib: establish Zircon libc++ and KTL foundation

1 files changed, 76 insertions, 0 deletions

diff --git a/third_party/libcxx/include/c++/v1/__ios/fpos.h b/third_party/libcxx/include/c++/v1/__ios/fpos.h
new file mode 100644
index 0000000..af11442
--- /dev/null
+++ b/third_party/libcxx/include/c++/v1/__ios/fpos.h
@@ -0,0 +1,76 @@
+// -*- 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___IOS_FPOS_H
+#define _LIBCPP___IOS_FPOS_H
+
+#include <__config>
+#include <__fwd/ios.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _StateT>
+class fpos {
+private:
+  _StateT __st_;
+  streamoff __off_;
+
+public:
+  _LIBCPP_HIDE_FROM_ABI fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {}
+
+  _LIBCPP_HIDE_FROM_ABI operator streamoff() const { return __off_; }
+
+  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI _StateT state() const { return __st_; }
+  _LIBCPP_HIDE_FROM_ABI void state(_StateT __st) { __st_ = __st; }
+
+  _LIBCPP_HIDE_FROM_ABI fpos& operator+=(streamoff __off) {
+    __off_ += __off;
+    return *this;
+  }
+
+  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI fpos operator+(streamoff __off) const {
+    fpos __t(*this);
+    __t += __off;
+    return __t;
+  }
+
+  _LIBCPP_HIDE_FROM_ABI fpos& operator-=(streamoff __off) {
+    __off_ -= __off;
+    return *this;
+  }
+
+  [[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI fpos operator-(streamoff __off) const {
+    fpos __t(*this);
+    __t -= __off;
+    return __t;
+  }
+};
+
+template <class _StateT>
+[[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) {
+  return streamoff(__x) - streamoff(__y);
+}
+
+template <class _StateT>
+inline _LIBCPP_HIDE_FROM_ABI bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) {
+  return streamoff(__x) == streamoff(__y);
+}
+
+template <class _StateT>
+inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) {
+  return streamoff(__x) != streamoff(__y);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___IOS_FPOS_H