Section 11,86: TANH

 TANH (real-number)

 A function that returns the hyperbolic tangent of the argument.

 +------+---------+----------+------------+-------------+        
 | Args | Generic | Specific |  Argument  | Result Type |
 +------+---------+----------+------------+-------------+
 |  1   |  TANH   | TANH     | REAL*4     | REAL*4      |
 |      |         | DTANH    | REAL*8     | REAL*8      |
 |      |see note | QTANH    | REAL*16    | REAL*16     |
 +------+---------+----------+------------+-------------+

 NOTE: QTANH is not available in DEC Fortran.