COTAN

 COTAN (real-number)

 Class:  Elemental function - Generic

 Returns the cotangent of the argument.

 The argument cannot be zero.  It must be in radians and is treated
 as modulo 2*pi.

 +------+---------+----------+------------+-------------+        
 | Args | Generic | Specific |  Argument  | Result Type |
 +------+---------+----------+------------+-------------+
 |   1  | COTAN   | COTAN    | REAL*4     | REAL*4      |
 |      |         | DCOTAN   | REAL*8     | REAL*8      |
 |      |         | QCOTAN   | REAL*16    | REAL*16     |
 +------+---------+----------+------------+-------------+