General Functions

FLOAT(i)	return real value of integer i 
TRUNC(t)	return value of real r, truncated to an integer 
ABS(i);		return absolute value of x, type Integer or Real  

CHR(i)		return character with ordinal number i 
VAL(t,i)	return value of type t with ordinal number i 
ORD(c)		return ordinal number of c for character or enumeration type, starting with 0 

MAX(t)		return maximum value of type t 
MIN(t)		return minimum value of type t 
SIZE(t)		return number of bytes required for a variable of type t 
HIGH(a)		return upper bound of open array a 

ODD(i)		return "i MOD 2 <> 0", type integer or char 
EVEN(i)		return "i MOD 2 = 0", type integer or char 
CAP(c);		return capital character, corresponding to c