b1686786e8
Some of the macros in format_macros.h follow the C standard and try to fill holes in it (on Windows). But this one has no direct equivalent in the standard and is just mimicking the naming convention. That's not nice. References: https://devblogs.microsoft.com/cppblog/c99-library-support-in-visual-studio-2013/ https://stackoverflow.com/a/2524673 Change-Id: I53f3faca2976a5b5d4b04a67ffb56ae0f4e930b2 Bug: webrtc:10852 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/147862 Commit-Queue: Oleh Prypin <oprypin@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#28794}
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_FORMAT_MACROS_H_
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#define RTC_BASE_FORMAT_MACROS_H_
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// This file defines the format macros for some integer types and is derived
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// from Chromium's base/format_macros.h.
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// To print a 64-bit value in a portable way:
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// int64_t value;
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// printf("xyz:%" PRId64, value);
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// The "d" in the macro corresponds to %d; you can also use PRIu64 etc.
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//
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// To print a size_t value in a portable way:
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// size_t size;
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// printf("xyz: %" RTC_PRIuS, size);
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// The "u" in the macro corresponds to %u, and S is for "size".
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#if defined(WEBRTC_POSIX)
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#if (defined(_INTTYPES_H) || defined(_INTTYPES_H_)) && !defined(PRId64)
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#error "inttypes.h has already been included before this header file, but "
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#error "without __STDC_FORMAT_MACROS defined."
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#endif
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#if !defined(__STDC_FORMAT_MACROS)
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#define __STDC_FORMAT_MACROS
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#endif
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#include <inttypes.h>
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#include "rtc_base/system/arch.h"
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#define RTC_PRIuS "zu"
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#else // WEBRTC_WIN
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#include <inttypes.h>
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// These are being defined without the RTC_ prefix because this is just filling
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// the holes from what's supposed to be already present as part of the C
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// standard, but missing on older MSVC versions.
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#if !defined(PRId64)
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#define PRId64 "I64d"
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#endif
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#if !defined(PRIu64)
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#define PRIu64 "I64u"
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#endif
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#if !defined(PRIx64)
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#define PRIx64 "I64x"
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#endif
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// PRI*64 were added in MSVC 2013, while "%zu" is supported since MSVC 2015
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// (so needs to be special-cased to "%Iu" instead).
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#define RTC_PRIuS "Iu"
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#endif
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#endif // RTC_BASE_FORMAT_MACROS_H_
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