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Compiler-specific Features
4.7.26 __rbit
This intrinsic inserts an RBIT instruction into the instruction stream generated by the
compiler. It enables you to reverse the bit order in a 32-bit word from within your C or
C++ code.
Syntax
unsigned int __rbit(unsigned int val)
where:
val
is the data value whose bit order is to be reversed.
Return value
The __rbit intrinsic returns the value obtained from val by reversing its bit order.
See also
• REV, REV16, REVSH, and RBIT on page 4-65 in the Assembler Guide.
4.7.27 __rev
This intrinsic inserts a REV instruction or an equivalent code sequence into the
instruction stream generated by the compiler. It enables you to convert a 32-bit
big-endian data value into a little-endian data value, or a 32-bit little-endian data value
into big-endian data value from within your C or C++ code.
Note
The compiler introduces REV automatically when it recognizes certain expressions.
Syntax
unsigned int __rev(unsigned int val)
Where:
val
is an unsigned int.
Return value
The __rev intrinsic returns the value obtained from val by reversing its byte order.
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