Returns the number of clock ticks since the start of the process.
Supported on systems with
This intrinsic is not fully portable, such as to systems
INTEGER types but supporting times
wider than 32 bits.
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.
See MClock8 Intrinsic, for information on a similar intrinsic that might be portable to more GNU Fortran implementations, though to fewer Fortran compilers.
If the system does not support
-1 is returned.