-                        Unary Negation operator;  Binary Subtraction
 
 -exp1                   Unary Arithmetic negation
 exp1                    any real or integer expression
 
 exp1 - exp2             Binary subtraction
 exp1                    any real or integer expression
 exp2                    any real or integer expression
 
    The unary operator - performs arithmetic negation.  The result is the
    negative value of exp1; by definition, exp1 + -exp1 yields zero (0).
 
    As a binary operator, - performs subtraction.  The result depends
    upon the operands and follows the usual arithmetic conversion.  Note
    that subtraction is not commutative:  (A-B) <> (B-A).  Examples:
 
           i = 3223 - 88;       /* i == 3135 */
           x = 3.5 - 4.5;       /* x == -1.0 */

Seealso:


 Conversions 
 +