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.
unsigned int __rbit(unsigned int
is the data value whose bit order is to be reversed.
__rbit intrinsic returns the value obtained from
by reversing its bit order.
The compiler does not recognize the
__rbit intrinsic when compiling for a
target that does not support the
RBIT instruction. The compiler generates
either a warning or an error in this case, depending on the source language:
- In C code:
Warning: #223-D: function "__rbit" declared implicitly.
- In C++ code:
Error: #20: identifier "__rbit" is undefined.