arithmetic_function

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

Referenced by:

<function_spec>