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Compiler support for floating-point arithmetic
Default selection of hardware or software floating
Example of hardware and software support differenc
Vector Floating-Point (VFP) architectures
Limitations on hardware handling of floating-point
Implementation of Vector Floating-Point (VFP) supp
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Integer division-by-zero errors in C code
About trapping integer division-by-zero errors wit
About trapping integer division-by-zero errors wit
Identification of integer division-by-zero errors
Examining parameters when integer division-by-zero
Software floating-point division-by-zero errors in
About trapping software floating-point division-by
Identification of software floating-point division
Software floating-point division-by-zero debugging
New language features of C99
New library features of C99
// comments in C99 and C90
Compound literals in C99
Designated initializers in C99
Hexadecimal floating-point numbers in C99
Flexible array members in C99
__func__ predefined identifier in C99
inline functions in C99
long long data type in C99 and C90
Macros with a variable number of arguments in C99
Mixed declarations and statements in C99
New block scopes for selection and iteration state
_Pragma preprocessing operator in C99
Restricted pointers in C99
Additional <math.h> library functions in C99
Complex numbers in C99
Boolean type and <stdbool.h> in C99
Extended integer types and functions in <inttyp
<fenv.h> floating-point environment access i
<stdio.h> snprintf family of functions in C9
<tgmath.h> type-generic math macros in C99
<wchar.h> wide character I/O functions in C9
How to prevent uninitialized data from being initi
Compiler Diagnostic Messages
Using the Inline and Embedded Assemblers of the AR
Compiler User Guide
Default selection of hardware or software floating-point support
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| Home > Compiler Coding Practices > Default selection of hardware or software floating-point support | |||
The default target FPU architecture is derived from use of
the --cpu option.
If the CPU specified with --cpu has a VFP
coprocessor, the default target FPU architecture is the VFP architecture
for that CPU. For example, the option --cpu ARM1136JF-S implies
the option --fpu vfpv2.
If a VFP coprocessor is present, VFP instructions are generated.
If there is no VFP coprocessor, the compiler generates code that
makes calls to the software floating-point library fplib to
carry out floating-point operations. fplib is
available as part of the standard distribution of the ARM compilation
tools suite of C libraries.
See also- Concepts
Using ARM C and C++ Libraries and Floating-Point Support:
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0375D |
| Non-Confidential | ID062912 |
 PDF version | |
| Home > Compiler Coding Practices > Default selection of hardware or software floating-point support |
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