C<PERL_SCAN_ALLOW_UNDERSCORES> is set in C<*flags> then the binary
number may use C<"_"> characters to separate digits.
+=for apidoc Amnh||PERL_SCAN_ALLOW_UNDERSCORES
+=for apidoc Amnh||PERL_SCAN_DISALLOW_PREFIX
+=for apidoc Amnh||PERL_SCAN_GREATER_THAN_UV_MAX
+=for apidoc Amnh||PERL_SCAN_SILENT_ILLDIGIT
+=for apidoc Amnh||PERL_SCAN_TRAILING
+
=cut
Not documented yet because experimental is C<PERL_SCAN_SILENT_NON_PORTABLE
one byte past the end of the recognized string. If the recognition fails,
zero is returned, and C<*sp> will not move.
+=for apidoc Amn|bool|IS_NUMBER_GREATER_THAN_UV_MAX
+=for apidoc Amn|bool|IS_NUMBER_INFINITY
+=for apidoc Amn|bool|IS_NUMBER_IN_UV
+=for apidoc Amn|bool|IS_NUMBER_NAN
+=for apidoc Amn|bool|IS_NUMBER_NEG
+=for apidoc Amn|bool|IS_NUMBER_NOT_INT
+
=cut
*/