newptr = _bitptr(oldptr,offset);
"_bitptr" returns a hardware pointer to the bit that is the given offset from "oldptr". The alignment of "*newptr" may not be appropriate for ANY valid C data object (except for a bit field). Bit pointers created by "_bitptr" may be compared for equality/inequality with other "(void *)" pointers and may be assigned to "(void *)" data objects. Any other operations, however, may result in error.
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