LOG10

 LOG10 (real-number)

 Class:  Elemental function - Generic

 Returns the common log (base 10) of the argument.  The argument
 must be greater than zero.
 +------+---------+----------+------------+-------------+        
 | Args | Generic | Specific |  Argument  | Result Type |
 +------+---------+----------+------------+-------------+
 |  1   |  LOG10  | ALOG10   | REAL*4     | REAL*4      |
 |      |         | DLOG10   | REAL*8     | REAL*8      |
 |      |         | QLOG10   | REAL*16    | REAL*16     |
 +------+---------+----------+------------+-------------+

 Note: The setting of compiler options specifying real
       size can affect ALOG10.