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C and C++ Compiler Implementation Limits Table D-4 describes other characteristics of floating-point numbers. These constants are also defined in the float.h include file. Table D-4 Other floating-point characteristics Constant Meaning Value FLT_RADIX Base (radix) of the ARM floating-point number representation 2 FLT_ROUNDS Rounding mode for floating-point numbers (nearest) 1 FLT_DIG Decimal digits of precision for float 6 DBL_DIG Decimal digits of precision for double 15 LDBL_DIG Decimal digits of precision for long double 15 FLT_MANT_DIG Binary digits of precision for type float 24 DBL_MANT_DIG Binary digits of precision for type double 53 LDBL_MANT_DIG Binary digits of precision for type long double 53 FLT_EPSILON Smallest positive value of x that 1.0 + x != 1.0 for type float 1.19209290e–7F DBL_EPSILON Smallest positive value of x that 1.0 + x != 1.0 for type double 2.2204460492503131e–16 LDBL_EPSILON Smallest positive value of x that 1.0 + x != 1.0 for type long double 2.2204460492503131e–16L Note • When a floating-point number is converted to a shorter floating-point number, it is rounded to the nearest representable number. • Floating-point arithmetic conforms to IEEE 754. D-6 Copyright © 2007, 2010 ARM Limited. All rights reserved. ARM DUI 0348A Non-Confidential
Appendix E Using NEON Support This appendix describes NEON intrinsics support in this release of the RealView Compilation Tools (RVCT). This appendix contains the following sections: • Introduction on page E-2 • Vector data types on page E-3 • Intrinsics on page E-4. ARM DUI 0348A Copyright © 2007, 2010 ARM Limited. All rights reserved. E-1 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 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 Where: v
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Compiler-specific Features Note The
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Compiler-specific Features • BKPT
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Compiler-specific Features unsigned
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Compiler-specific Features int32_t
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Page 303 and 304: Using NEON Support E.2 Vector data
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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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