public boolean agrees(long that) {
		that &= msk;
		return val == that;
	}
Checks if this and a long agree

<p>
The masked long agrees with the given long iff the masked long's defined bit positions agree
with the corresponding bit positions in the given long. Where there are undefined bits, no
check is applied. In the case that the masked long is fully-defined, this is the same as an
equality check on the value.

@param that the long
@return true if this and that agree.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/expr/MaskedLong.java