The first operator returns *expression1* plus *expression2*.

title: "operator / | Microsoft Docs"

title: "operator - | Microsoft Docs"

Returns *expression1* minus *expression2*. The second operator reverses the sign of *expression*.

|[* (multiply)](operator-multiply.md)|[+ (add)](operator-add.md)|[- (subtract or negate)](operator-subtract-2.md)|

|[. (field)](operator-dot.md)|[/ (divide)](operator-subtract-1.md)|[[] (index)](operator-brackets.md)|

|[MOD (remainder)](operator-mod.md)|||

|[! (runtime logical not)](operator-logical-not-masm-run-time.md)|[!= (runtime not equal)](operator-not-equal-masm.md)|[|| (runtime logical or)](operator-logical-or.md)|

|[&& (runtime logical and)](operator-logical-and-masm-run-time.md)|[< (runtime less than)](operator-less-than-masm-run-time.md)|[\<= (runtime less or equal)](operator-less-or-equal-masm-run-time.md)|

|[== (runtime equal)](operator-equal-masm-run-time.md)|[> (runtime greater than)](operator-greater-than-masm-run-time.md)|[>= (runtime greater or equal)](operator-greater-or-equal-masm-run-time.md)|

|[& (runtime bitwise and)](operator-bitwise-and.md)|||

|[CARRY? (runtime carry test)](operator-carry-q.md)|[OVERFLOW? (runtime overflow test)](operator-overflow-q.md)|[PARITY? (runtime parity test)](operator-parity-q.md)|

|[SIGN? (runtime sign test)](operator-sign-q.md)|[ZERO? (runtime zero test)](operator-zero-q.md)||

|[AND (bitwise and)](operator-and.md)|[NOT (bitwise not)](operator-not.md)|[OR (bitwise or)](operator-or.md)|

|[SHL (shift bits left)](operator-shl.md)|[SHR (shift bits right)](operator-shr.md)|[XOR (bitwise exclusive or)](operator-xor.md)|

|[! (character literal)](operator-logical-not-masm.md)|[% (treat as text)](operator-percent.md)||

|[;; (treat as comment)](operator-semicolons.md)|[&lt; &gt; (treat as one literal)](operator-literal.md)|[& & (substitute parameter value)](operator-logical-and-masm.md)|

|[' ' (treat as string)](operator-single-quote.md)|[" " (treat as string)](operator-double-quote.md)||

|: (local label definition)|:: (register segment and offset)|:: (global label definition)|

|[; (treat as comment)](operator-semicolon.md)|[DUP (repeat declaration)](operator-dup.md)||

|[MASK (get record or field bitmask)](operator-mask.md)|[WIDTH (get record or field width)](operator-width.md)|

|[EQ (equal)](operator-eq.md)|[GE (greater or equal)](operator-ge.md)|[GT (greater than)](operator-gt.md)|

|[LE (less or equal)](operator-le.md)|[LT (less than)](operator-lt.md)|[NE (not equal)](operator-ne.md)|

|[: (segment override)](operator-colon.md)|:: (register segment and offset)|

|[IMAGEREL (image relative offset)](operator-imagerel.md)|[LROFFSET (loader resolved offset)](operator-lroffset.md)|

|[OFFSET (segment relative offset)](operator-offset.md)|[SECTIONREL (section relative offset)](operator-sectionrel.md)|

|[SEG (get segment)](operator-seg.md)||

|[HIGH (high 8 bits of lowest 16 bits)](operator-high.md)|[HIGH32 (high 32 bits of 64 bits)](operator-high32.md)|[HIGHWORD (high 16 bits of lowest 32 bits)](operator-highword.md)|

|[LENGTH (number of elements in array)](operator-length.md)|[LENGTHOF (number of elements in array)](operator-lengthof.md)|[LOW (low 8 bits)](operator-low.md)|

|[LOW32 (low 32 bits)](operator-low32.md)|[LOWWORD (low 16 bits)](operator-lowword.md)|[OPATTR (get argument type info)](operator-opattr.md)|

|[PTR (pointer to or as type)](operator-ptr.md)|[SHORT (mark short label type)](operator-short.md)|[SIZE (size of type or variable)](operator-size.md)|

|[SIZEOF (size of type or variable)](operator-sizeof.md)|[THIS (current location)](operator-this.md)|[TYPE (get expression type)](operator-type.md)|

|[.TYPE (get argument type info)](operator-dot-type.md)|||

[Microsoft Macro Assembler Reference](microsoft-macro-assembler-reference.md)<br/>