INT add(INT, INT, ...);addition - two to 32 arguments
INT sub(INT, INT);subtraction
INT mul(INT, INT, ...);multiplication - two to 32 arguments
INT div(INT, INT);division
INT mod(INT, INT);modulus (remainder)
INT exp(INT, INT);exponentiation
INT neg(INT);integer negation
VOID incr(INT_V);increment variable by one
VOID decr(INT_V);decrement variable by one
BOOL and(BOOL, BOOL, ...);logical and - two to 32 arguments
BOOL or(BOOL, BOOL, ...);logical or - two to 32 arguments
BOOL not(BOOL);logical not
BOOL eq(ANY, ANY);equality (not strings)
BOOL ne(ANY, ANY);non-equality
BOOL lt(ANY, ANY);less than
BOOL gt(ANY, ANY);greater than
BOOL le(ANY, ANY);less than or equal
BOOL ge(ANY, ANY);greater than or equal
Add, sub, mul and div do integer arithmetic. Functions add and mul can have two to 32 arguments; the sum or product of the full set of arguments is computed. Functions sub and div have two arguments each; sub subtracts its second argument from its first, and div divides its first argument by its second. The mod function returns the remainder after dividing the first parameter by the second. If the second argument to div or mod is zero, these functions return 0 and generate a run time error. Exp performs integer exponentiation. Neg negates its argument.
Incr and decr increment by one and decrement by one, respectively, the value of a variable. The argument to both functions must be a variable.
And and or do logical operations. Both functions take two to 32 arguments. All arguments are and’ed or or’ed together, respectively. The arguments are evaluated from left to right, but only up to the point where the final value of the function becomes known. Not does the logical not operation.
Eq, ne, lt, le, gt and ge evaluate the six ordering relationships between two integers.