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Compiler-specific Features 4.11 Compiler predefines This section documents the predefined macros of the ARM compiler. 4.11.1 Predefined macros Table 4-24 lists the macro names predefined by the ARM compiler for C and C++. Where the value field is empty, the symbol is only defined. Table 4-24 Predefined macros Name Value When defined __arm__ – Always defined for the ARM compiler, even when you specify the --thumb option. See also __ARMCC_VERSION. __ARMCC_VERSION ver Always defined. It is a decimal number, and is guaranteed to increase between releases. The format is PVbbbb where: • P is the major version • V is the minor version • bbbb is the build number. Note Use this to distinguish between RVCT and other tools that define __arm__. __APCS_INTERWORK – When you specify the --apcs /interwork option or set the CPU architecture to ARMv5T or later. __APCS_ROPI – When you specify the --apcs /ropi option. __APCS_RWPI – When you specify the --apcs /rwpi option. __APCS_FPIC – When you specify the --apcs /fpic option. __ARRAY_OPERATORS – In C++ compiler mode, to specify that array new and delete are enabled. __BASE_FILE__ name Always defined. Similar to __FILE__, but indicates the primary source file rather than the current one (that is, when the current file is an included file). __BIG_ENDIAN – If compiling for a big-endian target. _BOOL – In C++ compiler mode, to specify that bool is a keyword. __cplusplus – In C++ compiler mode. 4-198 Copyright © 2007-2010 ARM. All rights reserved. ARM DUI 0348C Non-Confidential, ID101213
Compiler-specific Features Table 4-24 Predefined macros (continued) Name Value When defined __CC_ARM 1 Always set to 1 for the ARM compiler, even when you specify the --thumb option. __CHAR_UNSIGNED__ – In GNU mode. It is defined if and only if char is an unsigned type. __DATE__ date Always defined. __EDG__ – Always defined. __EDG_IMPLICIT_USING_STD – In C++ mode when you specify the --implicit_using_std option. __EDG_VERSION__ – Always set to an integer value that represents the version number of the Edison Design Group (EDG) front-end. For example, version 3.8 is represented as 308. The version number of the EDG front-end does not necessarily match the RVCT or RealView Development Suite version number. __EXCEPTIONS 1 In C++ mode when you specify the --exceptions option. __FEATURE_SIGNED_CHAR – When you specify the --signed_chars option (used by CHAR_MIN and CHAR_MAX). __FILE__ name Always defined as a string literal. __FP_FAST – When you specify the --fpmode=fast option. __FP_FENV_EXCEPTIONS – When you specify the --fpmode=ieee_full or --fpmode=ieee_fixed options. __FP_FENV_ROUNDING – When you specify the --fpmode=ieee_full option. __FP_IEEE – When you specify the --fpmode=ieee_full, --fpmode=ieee_fixed, or --fpmode=ieee_no_fenv options. __FP_INEXACT_EXCEPTION – When you specify the --fpmode=ieee_full option. __GNUC__ ver When you specify the --gnu option. It is an integer that shows the current major version of the GNU mode being used. __GNUC_MINOR__ ver When you specify the --gnu option. It is an integer that shows the current minor version of the GNU mode being used. __GNUG__ ver In GNU mode when you specify the --cpp option. It has the same value as __GNUC__. __IMPLICIT_INCLUDE – When you specify the --implicit_include option. ARM DUI 0348C Copyright © 2007-2010 ARM. All rights reserved. 4-199 ID101213 Non-Confidential,
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® RealView Compilation Tools Versi
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Product Status The information in t
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Contents RealView Compilation Tools
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Preface This preface introduces the
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Preface Appendix A Via File Syntax
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Preface Other publications The foll
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Chapter 1 Introduction This chapter
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Introduction 1.2 Source language mo
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Introduction 1.3 Language extension
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Introduction • Compiling a C sour
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Chapter 2 Compiler Command-line Opt
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Compiler Command-line Options 2.1.2
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Compiler Command-line Options Each
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Compiler Command-line Options Note
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Compiler Command-line Options Defau
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Compiler Command-line Options Usage
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Chapter 3 Language Extensions This
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Language Extensions 3.1.2 #include_
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Language Extensions 3.5 Standard C+
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Language Extensions Example 3-2 Lin
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Chapter 4 Compiler-specific Feature
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Compiler-specific Features Usage __
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Compiler-specific Features Example
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Appendix E Using NEON Support This
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Using NEON Support E.2 Vector data
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Using NEON Support • Vector long
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Using NEON Support Long pairwise ad
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Using NEON Support uint8x8_t vrshr_
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Using NEON Support int16x4_t lane);
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Using NEON Support uint64x1x2_t vld
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