1 //===- EndianStream.h - Stream ops with endian specific data ----*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines utilities for operating on streams that have endian 11 // specific data. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_SUPPORT_ENDIANSTREAM_H 16 #define LLVM_SUPPORT_ENDIANSTREAM_H 17 18 #include "llvm/ADT/ArrayRef.h" 19 #include "llvm/Support/Endian.h" 20 #include "llvm/Support/raw_ostream.h" 21 22 namespace llvm { 23 namespace support { 24 25 namespace endian { 26 /// Adapter to write values to a stream in a particular byte order. 27 template <endianness endian> struct Writer { 28 raw_ostream &OS; 29 Writer(raw_ostream &OS) : OS(OS) {} 30 template <typename value_type> void write(ArrayRef<value_type> Vals) { 31 for (value_type V : Vals) 32 write(V); 33 } 34 template <typename value_type> void write(value_type Val) { 35 Val = byte_swap<value_type, endian>(Val); 36 OS.write((const char *)&Val, sizeof(value_type)); 37 } 38 }; 39 40 template <> 41 template <> 42 inline void Writer<little>::write<float>(float Val) { 43 write(FloatToBits(Val)); 44 } 45 46 template <> 47 template <> 48 inline void Writer<little>::write<double>(double Val) { 49 write(DoubleToBits(Val)); 50 } 51 52 template <> 53 template <> 54 inline void Writer<big>::write<float>(float Val) { 55 write(FloatToBits(Val)); 56 } 57 58 template <> 59 template <> 60 inline void Writer<big>::write<double>(double Val) { 61 write(DoubleToBits(Val)); 62 } 63 64 } // end namespace endian 65 66 } // end namespace support 67 } // end namespace llvm 68 69 #endif 70
