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Controlling the Arm® floating-point environment

The Arm® compilation tools supply several different interfaces to the floating-point environment, for compatibility and porting ease.

These interfaces enable you to change the rounding mode, enable and disable trapping of exceptions, and install your own custom exception trap handlers.


The Arm Compiler toolchain does not support floating-point exception trapping for AArch64 targets.

This section contains the following subsections: