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- SYSTEM_CLOCK(3I) Last changed: 1-8-98
-
-
- NNAAMMEE
- SSYYSSTTEEMM__CCLLOOCCKK - Returns integer data from a real-time clock
-
- SSYYNNOOPPSSIISS
- CCAALLLL SSYYSSTTEEMM__CCLLOOCCKK (([[CCOOUUNNTT==]_c_o_u_n_t] [,,[CCOOUUNNTT__RRAATTEE==]_c_o_u_n_t__r_a_t_e]
- [,,[CCOOUUNNTT__MMAAXX==_c_o_u_n_t__m_a_x]))
-
- IIMMPPLLEEMMEENNTTAATTIIOONN
- UNICOS, UNICOS/mk, and IRIX systems
-
- SSTTAANNDDAARRDDSS
- Fortran 90
-
- DDEESSCCRRIIPPTTIIOONN
- The SSYYSSTTEEMM__CCLLOOCCKK intrinsic subroutine returns information gathered
- from the real-time clock. SSYYSSTTEEMM__CCLLOOCCKK accepts the following
- arguments:
-
- _c_o_u_n_t Must be type default integer. If _c_o_u_n_t is present, it is
- set to a machine-specific value based on the current value
- of the machine's clock. If there is no clock, it is set to
- -HHUUGGEE((00)). The machine-specific value is incremented by one
- for each clock count until the value _c_o_u_n_t__m_a_x is reached;
- it is reset to 0 at the next count. If there is a clock, it
- lies in the range 0 to _c_o_u_n_t__m_a_x.
-
- _c_o_u_n_t__r_a_t_e
- Must be type default integer. If _c_o_u_n_t__r_a_t_e is present, it
- is set to the number of clock counts per second. If there
- is no clock, it is set to 0.
-
- _c_o_u_n_t__m_a_x Must be type default integer. If _c_o_u_n_t__m_a_x is present, it
- is set to the maximum value that _c_o_u_n_t can have. If there
- is no clock, it is set to 0.
-
- The arguments to SSYYSSTTEEMM__CCLLOOCCKK cannot be declared with a nondefault
- kind type. For information on default integer kind types, see section
- 4.3 of the _F_o_r_t_r_a_n _L_a_n_g_u_a_g_e _R_e_f_e_r_e_n_c_e _M_a_n_u_a_l, _V_o_l_u_m_e _1, publication
- SR-3902.
-
- The name of this intrinsic cannot be passed as an argument.
-
- Hardware counter values from the ssyyssssggii(2) system call are used on
- IRIX systems. The real-time clock is used on UNICOS and UNICOS/mk
- systems.
-
- Due to the hardware characteristics of UNICOS systems, the values
- returned in _c_o_u_n_t and _c_o_u_n_t__m_a_x are 64-bit values on these systems.
-
- SSEEEE AALLSSOO
- SSYYSSCCLLOOCCKK(3F)
-
- ggeettttiimmeeooffddaayy(2) in the _U_N_I_C_O_S _S_y_s_t_e_m _C_a_l_l_s _R_e_f_e_r_e_n_c_e _M_a_n_u_a_l,
- publication SR-2012
-
- _I_n_t_r_i_n_s_i_c _P_r_o_c_e_d_u_r_e_s _R_e_f_e_r_e_n_c_e _M_a_n_u_a_l, publication SR-2138, for the
- printed version of this man page.
-