RealView Compilation Tools Compiler Reference Guide: 4.7.38. __ssat

RealView Compilation Tools Compiler Reference Guide

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4.7.38. `__ssat`

This intrinsic inserts an SSAT instruction into the instruction stream generated by the compiler. It enables you to saturate a signed value from within your C or C++ code.

Syntax

int __ssat(int val, unsigned int sat)

Where:

val: Is the value to be saturated.
sat: Is the bit position to saturate to.
sat must be in the range 1 to 32.

Return value

The __ssat intrinsic returns val saturated to the signed range -2^sat-1 ≤ x ≤ 2^sat-1 -1.

Errors

The compiler does not recognize the __ssat intrinsic when compiling for a target that does not support the SSAT instruction. The compiler generates either a warning or an error in this case.

See also

__usat
SSAT and USAT in the Assembler Guide.

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