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#elisp
Function: logior &rest ints-or-markers

This function returns the “inclusive or” of its arguments: the n th bit is set in the result if, and only if, the n th bit is set in at least one of the arguments. If there are no arguments, the result is zero, which is an identity element for this operation. If logior is passed just one argument, it returns that argument.

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GNU Emacs Lisp Reference Manual: Bitwise Operations
= 0000...001100 (logand 14 13 4) ; 14 = 0000...001110 ; 13 = 0000...001101 ; 4 = 0000...000100 ⇒ 4 ; 4 = 0000...000100 (logand) ⇒ -1 ; -1 = 1111...111111 <span>Function: logior &rest ints-or-markers This function returns the “inclusive or” of its arguments: the n th bit is set in the result if, and only if, the n th bit is set in at least one of the arguments. If there are no arguments, the result is zero, which is an identity element for this operation. If logior is passed just one argument, it returns that argument. ; 30-bit binary values (logior 12 5) ; 12 = 0000...001100 ; 5 = 0000...000101 ⇒ 13 ; 13 = 0000...001101 (logior 12 5 7) ; 12 = 0


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