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4.2 OPERATORS AND PRECEDENCE

There is two type of operators - unary and binary:

Unary:
   - sign change
   + sign change (not evaluated)
   ~ complement
   ! negation

Binary:
   - subtraction
   + addition
   * multiplication
   / division
   % modulo
   & and
   | or
   ^ xor
   << shift left
   >> shift right
   < less
   <= less-or-equ
   > greater
   >= greater-or-equ
   == equ
   != not-equ

In addition, there is some functions that act like operators:

.isdef
.isndef
.ror
.rol
.hi8
.lo8
.hi16
.lo16

Operators .ror and .rol are binary operators, others are unary. .ror and .rol rotate number right/left:

  Data1 = 3

  Data2 = Data1 .ror 4 ; rotate 4 bits right

Most assemblers have operators that manipulate with high or low bytes. Mas expand this for manipulating low/high bytes or words:

.lo8 - lower 8 bits
.hi8 - high 8 bits
.lo16 - lower 16 bits
.hi16 - high 16 bits:

Operators .isdef and .isndef return 1 or 0 if name is declared/not-declared:

  Data1 = 123

  Data2 = .isdef Data1 ; Data2 = 1

  Data3 = .isndef Data4 ; Data3 = 1

(abbreviation form 'is-defined' and 'is-not-defined').

`operator`	`form`	`precedense`
`()`	`grouping`	`0`
`-`	`unary`	`1`
`+`	`unary`	`1`
`~`	`unary`	`1`
`!`	`unary`	`1`
`.lo8`	`unary`	`1`
`.hi8`	`unary`	`1`
`.lo16`	`unary`	`1`
`.hi16`	`unary`	`1`
`.isdef`	`unary`	`1`
`.isndef`	`unary`	`1`
`*`	`binary`	`2`
`/`	`binary`	`2`
`%`	`binary`	`2`
`+`	`binary`	`3`
`-`	`binary`	`3`
`&`	`binary`	`4`
`\|`	`binary`	`4`
`<<`	`binary`	`4`
`>>`	`binary`	`4`
`.ror`	`binary`	`4`
`.rol`	`binary`	`4`
`<`	`binary`	`5`
`<=`	`binary`	`5`
`>`	`binary`	`5`
`>=`	`binary`	`5`
`!=`	`binary`	`5`

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