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FEATURE_PRESENT(3)	     Library Functions Manual	      FEATURE_PRESENT(3)

NAME
     feature_present -- query presence of a kernel feature

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     int
     feature_present(const char *feature);

DESCRIPTION
     The  feature_present() function provides a method for an application to de-
     termine if a specific kernel feature is present in  the  currently  running
     kernel.   The  feature argument specifies the name of the feature to check.
     The feature_present() function will return 1 if the  specified  feature  is
     present,  otherwise it will return 0.  If the feature_present() function is
     not able to determine the presence of feature due to an internal  error  it
     will return 0.

RETURN VALUES
     If feature is present then 1 is returned; otherwise 0 is returned.

SEE ALSO
     sysconf(3), sysctl(3)

HISTORY
     The feature_present() function first appeared in FreeBSD 8.0.

FreeBSD 14.3			 January 8, 2008	      FEATURE_PRESENT(3)

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<https://man.freebsd.org/cgi/man.cgi?query=feature_present&sektion=3&manpath=FreeBSD+14.3-RELEASE+and+Ports>

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