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/GNU Fortran 7

9.191 MCLOCK — Time function

Description:

Returns the number of clock ticks since the start of the process, based on the function 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.

Standard:

GNU extension

Class:

Function

Syntax:

RESULT = MCLOCK()

Return value:

The return value is a scalar of type 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).

See also:

CTIME, GMTIME, LTIME, MCLOCK, TIME

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Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-7.1.0/gfortran/MCLOCK.html