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sysconf
Preliminary: | MT-Safe env | AS-Unsafe lock heap | AC-Unsafe lock mem fd | See POSIX Safety Concepts.
This function is used to inquire about runtime system parameters. The parameter argument should be one of the ‘_SC_’ symbols listed below.
The normal return value from sysconf
is the value you requested.
A value of -1
is returned both if the implementation does not
impose a limit, and in case of an error.
The following errno
error conditions are defined for this function:
EINVAL
The value of the parameter is invalid.