Lahey/GNU Fortran

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8.212 SECNDS — Time function

Description:
SECNDS(X) gets the time in seconds from the real-time system clock. X is a reference time, also in seconds. If this is zero, the time in seconds from midnight is returned. This function is non-standard and its use is discouraged.
Standard:
GNU extension
Class:
Function
Syntax:
RESULT = SECNDS (X)
Arguments:

T Shall be of type REAL(4).
X Shall be of type REAL(4).

Return value:
None
Example:
          program test_secnds
              integer :: i
              real(4) :: t1, t2
              print *, secnds (0.0)   ! seconds since midnight
              t1 = secnds (0.0)       ! reference time
              do i = 1, 10000000      ! do something
              end do
              t2 = secnds (t1)        ! elapsed time
              print *, "Something took ", t2, " seconds."
          end program test_secnds