1@subheading idn2_check_version
2@anchor{idn2_check_version}
3@deftypefun {const char *} {idn2_check_version} (const char * @var{req_version})
4@var{req_version}: version string to compare with, or NULL.
5
6Check IDN2 library version.  This function can also be used to read
7out the version of the library code used.  See @code{IDN2_VERSION}  for a
8suitable  @code{req_version} string, it corresponds to the idn2.h header
9file version.  Normally these two version numbers match, but if you
10are using an application built against an older libidn2 with a
11newer libidn2 shared library they will be different.
12
13Return value: Check that the version of the library is at
14minimum the one given as a string in  @code{req_version} and return the
15actual version string of the library; return NULL if the
16condition is not met.  If NULL is passed to this function no
17check is done and only the version string is returned.
18@end deftypefun
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