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Standard C Implementation Definition B.1.12 Preprocessing directives The ISO standard C header files can be referred to as described in the standard, for example, #include . Quoted names for includable source files are supported. The compiler accepts host filenames or UNIX filenames. For UNIX filenames on non-UNIX hosts, the compiler tries to translate the filename to a local equivalent. The recognized #pragma directives are shown in Pragmas on page 4-49. B.1.13 Library functions The ISO C library variants are listed in About the runtime libraries on page 1-2 in the Libraries Guide. The precise nature of each C library is unique to the particular implementation. The generic ARM C library has, or supports, the following features: • The macro NULL expands to the integer constant 0. • If a program redefines a reserved external identifier such as printf, an error might occur when the program is linked with the standard libraries. If it is not linked with standard libraries, no error is detected. • The __aeabi_assert() function prints details of the failing diagnostic on stderr and then calls the abort() function: *** assertion failed: expression, file name, line number Note The behavior of the assert macro depends on the conditions in operation at the most recent occurrence of #include . See Exiting from the program on page 2-37 in the Libraries Guide for more information. For implementation details of mathematical functions, macros, locale, signals, and input/output see Chapter 2 The C and C++ Libraries in the Libraries Guide. B-8 Copyright © 2007, 2010 ARM Limited. All rights reserved. ARM DUI 0348A Non-Confidential
Standard C Implementation Definition B.2 Behaviors considered undefined by the ISO C Standard The following are considered undefined behavior by the ISO C Standard: • In character and string escapes, if the character following the \ has no special meaning, the value of the escape is the character itself. For example, a warning is generated if you use \s because it is the same as s. • A struct that has no named fields but at least one unnamed field is accepted by default, but generates an error in strict 1990 ISO Standard C. ARM DUI 0348A Copyright © 2007, 2010 ARM Limited. All rights reserved. B-9 Non-Confidential
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® RealView Compilation Tools Versi
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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 • ARM datasheet or techni
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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 Defau
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Compiler Command-line Options Note
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Compiler Command-line Options Table
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Compiler Command-line Options int m
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Compiler Command-line Options See a
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Compiler Command-line Options • -
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Compiler Command-line Options • T
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Compiler Command-line Options Where
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Compiler Command-line Options Mode
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Compiler Command-line Options • #
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Compiler Command-line Options Synta
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Compiler Command-line Options When
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Compiler Command-line Options Examp
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Compiler Command-line Options A num
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Compiler Command-line Options softv
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Compiler Command-line Options If --
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Compiler Command-line Options • I
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Compiler Command-line Options N #if
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Compiler Command-line Options 1 Res
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Compiler Command-line Options Restr
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Compiler Command-line Options • #
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Compiler Command-line Options Synta
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Compiler Command-line Options Restr
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Compiler Command-line Options • S
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Compiler Command-line Options --no_
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Compiler Command-line Options --apc
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Compiler Command-line Options Selec
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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 3.2 C99 languag
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Language Extensions 3.3 C99 languag
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Language Extensions Example void co
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Language Extensions static int y =
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Language Extensions 3.4.4 Dollar si
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Language Extensions 3.5 Standard C+
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Language Extensions Example 3-2 Lin
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Language Extensions 3.6 Standard C
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Language Extensions 3.6.4 Assembler
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Language Extensions 3.6.12 Structur
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Language Extensions 3.7 GNU languag
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Language Extensions 3.7.5 Character
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Language Extensions 3.7.10 Inline T
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Language Extensions Example int bar
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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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Compiler-specific Features 4.1.6 __
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Compiler-specific Features 4.1.11 _
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Compiler-specific Features short x;
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Compiler-specific Features Where: s
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Compiler-specific Features typedef
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Compiler-specific Features • 0-25
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Compiler-specific Features Usage Fu
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Compiler-specific Features }; __dec
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Compiler-specific Features 4.3 Func
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Compiler-specific Features The comp
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Compiler-specific Features Note Thi
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Compiler-specific Features In the f
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Compiler-specific Features 4.4 Type
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Compiler-specific Features void cal
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Compiler-specific Features replaced
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Compiler-specific Features Note Thi
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Compiler-specific Features 4.6 Prag
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Compiler-specific Features • Temp
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Compiler-specific Features Syntax #
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Compiler-specific Features #pragma
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Compiler-specific Features • __at
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Compiler-specific Features 4.6.20 #
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Compiler-specific Features If the i
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Compiler-specific Features 4.7 Inst
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Compiler-specific Features Where: c
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Compiler-specific Features Return v
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Compiler-specific Features See also
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Compiler-specific Features Syntax v
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Compiler-specific Features Where: p
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Compiler-specific Features Syntax v
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Compiler-specific Features Where: v
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Compiler-specific Features Note The
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Compiler-specific Features • BKPT
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Page 275 and 276: Appendix A Via File Syntax This app
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Page 295 and 296: Appendix D C and C++ Compiler Imple
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Page 301 and 302: Appendix E Using NEON Support This
Page 303 and 304: Using NEON Support E.2 Vector data
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Using NEON Support void vst2_u64(__
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Using NEON Support void vst2q_lane_
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Using NEON Support float32_t vget_l
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Using NEON Support uint8x16_t vdupq
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Using NEON Support uint16x4_t vget_
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Using NEON Support E.3.25 Operation
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Using NEON Support int16x8_t vmulq_
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Using NEON Support Vector widening
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Using NEON Support Absolute: Vd[i]
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Using NEON Support uint8x8_t vmvn_u
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Using NEON Support int16x8_t vornq_
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Using NEON Support uint32x4x2_t vuz
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