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