tensorflow/core/platform/byte_order.h

/* Copyright 2018 The TensorFlow Authors. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==============================================================================*/

#ifndef TENSORFLOW_CORE_PLATFORM_BYTE_ORDER_H_
#define TENSORFLOW_CORE_PLATFORM_BYTE_ORDER_H_

// Byte order defines provided by gcc. MSVC doesn't define those so
// we define them here.
// We assume that all windows platform out there are little endian.
#if defined(_MSC_VER) && !defined(__clang__)
#define __ORDER_LITTLE_ENDIAN__ 0x4d2
#define __ORDER_BIG_ENDIAN__ 0x10e1
#define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
#endif

namespace tensorflow {
namespace port {

// TODO(jeff,sanjay): Make portable
constexpr bool kLittleEndian = __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__;

}  // namespace port
}  // namespace tensorflow

#endif  // TENSORFLOW_CORE_PLATFORM_BYTE_ORDER_H_