second - return the user time for a process in seconds
     REAL FUNCTION SECOND()
     REAL FUNCTION SECOND_64()
  F95 INTERFACE
     REAL FUNCTION SECOND()
     REAL FUNCTION SECOND_64()
  C INTERFACE
     #include <sunperf.h>
     float second();
     float second_64();
     second returns the user time for a process in seconds.  This
     version gets the time from the system function ETIME.