clock(3)
in the C standard library. This intrinsic is not fully portable, such as to systems with 32-bit 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.
RESULT = MCLOCK()
INTEGER(4)
, equal to the number of clock ticks since the start of the process, or -1
if the system does not support clock(3)
.
© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-6.3.0/gfortran/MCLOCK.html