Definitions of Functions

The table below summarizes the functions that are available.

The "arguments" column defines argument type and the "type" column defines the type of the function, as follows:

Alph	means alphabetic
Anum	means alphanumeric
Int	means integer
Nat	means national
Num	means numeric

Table 1: Summary of Functions

Function-Name	Arguments	Type	Value Returned
ABS	Int1 or Num1	Depends upon arguments	The absolute value of argument
ACOS	Num1	Num	Arccosine of Num1
ANNUITY	Num1, Int2	Num	Ratio of annuity paid for Int2 periods at interest of Num1 to initial investment of one
ASIN	Num1	Num	Arcsine of Num1
ATAN	Num1	Num	Arctangent of Num1
CHAR	Int1	Anum	Character in position Int1 of the alphanumeric program collating sequence
CHAR-NATIONAL	Int1	Nat	Character in position Int1 of the national program collating sequence
COS	Num1	Num	Cosine of Num1
CURRENT-DATE	None	Anum	Current date and time and difference from Greenwich Mean Time
DATE-OF-INTEGER	Int1	Int	Standard date equivalent (YYYYMMDD) of integer date
DATE-TO-YYYYMMDD	Int1, Int2	Int	Argument-1 converted from YYMMDD to YYYYMMDD based on the value of argument-2
DAY-OF-INTEGER	Int1	Int	Julian date equivalent (YYYYDDD) of integer date
DAY-TO-YYYYDDD	Int1, Int2	Int	Argument-1 converted from YYDDD to YYYYDDD based on the value of argument-2
DISPLAY-OF	Nat1, Anum1 Num1	Anum	Usage display representation of argument Nat1
E	None	Num	The value of e, the natural base
EXP	Num1	Num	e raised to the power Num1
EXP10	Num1	Num	10 raised to the power Num1
FACTORIAL	Int1	Int	Factorial of Int1
FRACTION-PART	Num1	Num	Fraction part of Num1
INTEGER	Num1	Int	The greatest integer not greater than Num1
INTEGER-OF-DATE	Int1	Int	The integer date equivalent of standard date (YYYYMMDD)
INTEGER-OF-DAY	Int1	Int	The integer date equivalent of Julian date (YYYYDDD)
INTEGER-PART	Num1	Int	Integer part of Num1
LENGTH	Alph1 or Anum1 or Nat1 or Num1	Int	Length of argument in number of character positions
LENGTH-AN	Alph1 or Anum1 or Int1 or Nat1 or Num1	Int	Length of argument in number of alphanumeric character positions
LOG	Num1	Num	Natural logarithm of Num1
LOG10	Num1	Num	Logarithm to base 10 of Num1
LOWER-CASE	Alph1 or Anum1 or Nat1	Depends upon argument*	All letters in the argument are set to lowercase
MAX	Alph1 ... or Anum1 ... or Int1 ... or Nat1 ... or Num1 ...	Depends upon arguments*	Value of maximum argument
MEAN	Num1 ...	Num	Arithmetic mean of arguments
MEDIAN	Num1 ...	Num	Median of arguments
MIDRANGE	Num1 ...	Num	Mean of minimum and maximum arguments
MIN	Alph1 ... or Anum1 ... or Int1 ... or Nat1 ... or Num1 ...	Depends upon arguments*	Value of minimum argument
MOD	Int1, Int2	Int	Int1 modulo Int2
NATIONAL-OF	Anum1 or Nat1 Num1	Nat	Usage national representation of argument Anum1
NUMVAL	Anum1 or or Nat1	Num	Numeric value of simple numeric string
NUMVAL-C	Anum1 or Anum2 or Nat1 or Nat2	Num	Numeric value of numeric string with optional commas and currency string
ORD	Alph1 or Anum1 or Nat1	Int	Ordinal position of the argument in collating sequence
ORD-MAX	Alph1 ... or Anum1 ... or Nat1 ... or Num1	Int	Ordinal position of maximum argument
ORD-MIN	Alph1 ... or Anum1 ... or Nat1 ... or Num1	Int	Ordinal position of minimum argument
PI	None	Num	Value of
PRESENT-VALUE	Num1, Num2 ...	Num	Present value of a series of future period-end amounts, Num2, at a discount rate of Num1
RANDOM	Int1	Num	Random number
RANGE	Int1 ... or Num1	Depends upon arguments*	Value of maximum argument minus value of minimum arguments
REM	Num1, Num2	Num	Remainder of Num1/Num2
REVERSE	Alph1 or Anum1 or Nat1	Depends upon argument*	Reverse order of the characters of the argument
SIGN	Num1	Int	The sign of Num1
SIN	Num1	Num	Sine of Num1
SQRT	Num1	Num	Square root of Num1
STANDARD-DEVIATION	Num1 ...	Num	Standard deviation of arguments
SUM	Int1 ... or Num1 ...	Depends upon arguments	Sum of arguments
TAN	Num1	Num	Tangent of Num1
UPPER-CASE	Alph1 or Anum1 or Nat1	Depends upon argument*	All letters in the argument are set to uppercase
VARIANCE	Num1 ...	Num	Variance of argument
WHEN-COMPILED	None	Anum	Date and time program was compiled
YEAR-TO-YYYY	Int1, Int2	Int	Argument-1 converted from YY to YYYY based on the value of argument-2

* A function that has only alphabetic arguments is type alphanumeric.