REAL; scalar; INTENT(OUT).
Returns the process's runtime in seconds in Seconds—the same value
as the UNIX function
On some systems, the underlying timings are represented using types with sufficiently small limits that overflows (wraparounds) are possible, such as 32-bit types. 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.
This routine is known from Cray Fortran. See CPU_Time Intrinsic, for a standard equivalent.
For information on other intrinsics with the same name: See Second Intrinsic (function).