Remote Processing CAMBASIC - Manual (Page 18)

Concepts - 12
The NOT oper ator performs a logical negative of a value.
Operand 1 0001 0111 = 23
NOT Operand 1 1110 1000 = 232
Value of expression Value of NOT expression
1 – 2
2 – 3
– 2 1
– 1 0
NOTE: The NOT expression is false only if the expression evaluates to a value of – 1. If you define
Boolean constants or variables for use in your programs, use – 1 for true.
The XOR operator essentially detects the presence of a binary “1” in either operand. F or example:
Operand 1 0001 0111 = 23
Operand 2 0100 1010 = 74
Operand 1 0101 1101 = 93
XOR Ope rand 2
Expression Evaluation
Parent hesis
The usual rules for order ar e followed in evaluating expr essions. T he order of evaluation is controlled by par entheses.
Their liberal use is r ecomm ended both fo r err or– free co de and for clarity. They ar e requir ed when mixing fun ctional,
mathem atical, logical or relational operator s.
Spaces
CAM BASIC has a very forgiving attitude towards the use of spaces. They m ay be used almost anywhere. They must be
used after keywords. If the keyword is followed by a variable, for example, PRINT F, will give a syntax error. All spaces
are removed in the compiling process. They are added back when you type LIST.
Order
The set of arithm etic and logical operator s available in CAM BASIC in the or der in which they ar e evaluated is as follows:
1. expressions in parentheses “( )”
2. $ (exponent)
3. – (unary m inus)
4. * and / (multiplication and division)
5. + and – (addition and subtraction)