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(g77-295.info)MClock8 Intrinsic

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MClock8 Intrinsic
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     MClock8()

MClock8: `INTEGER(KIND=2)' function.

Intrinsic groups: `unix'.

Description:

   Returns the number of clock ticks since the start of the process.
Supported on systems with `clock(3)' (q.v.).

   *Warning:* this intrinsic does not increase the range of the timing
values over that returned by `clock(3)'.  On a system with a 32-bit
`clock(3)', `MCLOCK8' will return a 32-bit value, even though converted
to an `INTEGER(KIND=2)' value.  That means overflows of the 32-bit
value can still occur.  Therefore, the values returned by this intrinsic
might be, or become, negative, or numerically less than previous values,
during a single run of the compiled program.

   No Fortran implementations other than GNU Fortran are known to
support this intrinsic at the time of this writing.  Note: MClock
Intrinsic, for information on a similar intrinsic that might be
portable to more Fortran compilers, though to fewer GNU Fortran
implementations.

   If the system does not support `clock(3)', -1 is returned.