Syntax

1. <arithmetic_function> ::=
     ABS (<expression>)
   | CEIL (<expression>)
   | EXP (<expression>)
   | FIXED (<expression>[,<unsigned_integer>[,<unsigend_integer>]])
   | FLOAT (<expression>,<unsigend_integer>)
   | FLOOR (<expression>)
   | INDEX (<string_spec>,<string_spec>[,<expression>[,<expression>]])
   | LENGTH (<expression>)
   | LN (<expression>)
   | LOG (<expression>)
   | NOROUND (<expression>)
   | PI
   | POWER (<expression>,<expression>)
   | ROUND (<expression>[,<expression>])
   | SIGN (<expression>)
   | SQRT (<expression>)
   | TRUNC (<expression>[,<expression>])