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Controlling the ARM floating-point environment
Floating-point functions for compatibility with Mi
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C99 rounding mode and floating-point exception mac
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ARM floating-point compiler extensions to the C99
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Using C99 signalling NaNs provided by mathlib (_WA
mathlib double and single-precision floating-point
Nonstandard functions in mathlib
IEEE 754 arithmetic
Basic data types for IEEE 754 arithmetic
Single precision data type for IEEE 754 arithmetic
Double precision data type for IEEE 754 arithmetic
Sample single precision floating-point values for
Sample double precision floating-point values for
IEEE 754 arithmetic and rounding
Exceptions arising from IEEE 754 floating-point ar
Ignoring exceptions from IEEE 754 floating-point a
Trapping exceptions from IEEE 754 floating-point a
Exception types recognized by the ARM floating-poi
Using the Vector Floating-Point (VFP) support libr
Libraries and Floating Point Support Guide
About floating-point support
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| Home > Floating-point support > About floating-point support | |||
The ARM floating-point environment is an implementation of the IEEE 754-1985 standard for binary floating-point arithmetic.
An ARM system might have:
a VFP coprocessor
no floating-point hardware.
If you compile for a system with a hardware VFP coprocessor,
the ARM compiler makes use of it. If you compile for a system without
a coprocessor, the compiler implements the computations in software.
For example, the compiler option --fpu=vfp selects
a hardware VFP coprocessor and the option --fpu=softvfp specifies
that arithmetic operations are to be performed in software, without
the use of any coprocessor instructions.
See also- Concepts
- Reference
Compiler Reference:
| Copyright © 2007-2008, 2011-2012 ARM. All rights reserved. | ARM DUI 0378D |
| Non-Confidential | ID062912 |
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| Home > Floating-point support > About floating-point support |
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