OpenSSL_version_num() returns the version number.
+The macro OPENSSL_VERSION_AT_LEAST(major,minor) can be used at compile
+time test if the current version is at least as new as the version provided.
+The arguments major, minor and fix correspond to the version information
+as given above.
+
OpenSSL_version() returns different strings depending on B<t>:
=over 4