Fortran Wiki
system_clock (Rev #2, changes)

Showing changes from revision #1 to #2: (追記) Added (追記ここまで) | ~~(削除) Removed (削除ここまで)~~ | ~~(削除) Chan (削除ここまで)~~(追記) ged (追記ここまで)

Description

Determines the count of milliseconds of wall clock time since the Epoch (00:00:00 UTC, January 1, 1970) modulo count_max, count_rate determines the number of clock ticks per second. count_rate and count_max are constant and specific to gfortran.

If there is no clock, count is set to -huge(count), and count_rate and count_max are set to zero

Standard

~~(削除) Fortran 95 and later (削除ここまで)~~(追記) Fortran 95 (追記ここまで)(追記) and later (追記ここまで)

Class

Subroutine

Syntax

call system_clock([count, count_rate, count_max])

Arguments

count - (Optional) shall be a scalar of type default integer with intent(out).
count_rate - (Optional) shall be a scalar of type default integer with intent(out).
count_max - (Optional) shall be a scalar of type default integer with intent(out).

Example

program test_system_clock
 integer :: count, count_rate, count_max
 call system_clock(count, count_rate, count_max)
 write(*,*) count, count_rate, count_max
end program

Fortran Wiki system_clock (Rev #2, changes)