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      1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef BASE_FORMAT_MACROS_H_
      6 #define BASE_FORMAT_MACROS_H_
      7 #pragma once
      8 
      9 // This file defines the format macros for some integer types.
     10 
     11 // To print a 64-bit value in a portable way:
     12 //   int64_t value;
     13 //   printf("xyz:%" PRId64, value);
     14 // The "d" in the macro corresponds to %d; you can also use PRIu64 etc.
     15 //
     16 // For wide strings, prepend "Wide" to the macro:
     17 //   int64_t value;
     18 //   StringPrintf(L"xyz: %" WidePRId64, value);
     19 //
     20 // To print a size_t value in a portable way:
     21 //   size_t size;
     22 //   printf("xyz: %" PRIuS, size);
     23 // The "u" in the macro corresponds to %u, and S is for "size".
     24 
     25 #include "build/build_config.h"
     26 
     27 #if defined(OS_POSIX)
     28 
     29 #if (defined(_INTTYPES_H) || defined(_INTTYPES_H_)) && !defined(PRId64)
     30 #error "inttypes.h has already been included before this header file, but "
     31 #error "without __STDC_FORMAT_MACROS defined."
     32 #endif
     33 
     34 #if !defined(__STDC_FORMAT_MACROS)
     35 #define __STDC_FORMAT_MACROS
     36 #endif
     37 
     38 #include <inttypes.h>
     39 
     40 // GCC will concatenate wide and narrow strings correctly, so nothing needs to
     41 // be done here.
     42 #define WidePRId64 PRId64
     43 #define WidePRIu64 PRIu64
     44 #define WidePRIx64 PRIx64
     45 
     46 #if !defined(PRIuS)
     47 #define PRIuS "zu"
     48 #endif
     49 
     50 #else  // OS_WIN
     51 
     52 #if !defined(PRId64)
     53 #define PRId64 "I64d"
     54 #endif
     55 
     56 #if !defined(PRIu64)
     57 #define PRIu64 "I64u"
     58 #endif
     59 
     60 #if !defined(PRIx64)
     61 #define PRIx64 "I64x"
     62 #endif
     63 
     64 #define WidePRId64 L"I64d"
     65 #define WidePRIu64 L"I64u"
     66 #define WidePRIx64 L"I64x"
     67 
     68 #if !defined(PRIuS)
     69 #define PRIuS "Iu"
     70 #endif
     71 
     72 #endif
     73 
     74 #endif  // BASE_FORMAT_MACROS_H_
     75