nd EC_GFp_nistp521_method offer 64 bit optimised implementations for the NIST P224, P256 and P521 curves respectively. Note, however, that these implementations are not available on all platforms.</p>

<p>EC_METHOD_get_field_type() was deprecated in OpenSSL 3.0. Applications should use EC_GROUP_get_field_type() as a replacement (see <a href="../man3/EC_GROUP_copy.html">EC_GROUP_copy(3)</a>).</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>All EC_GFp* functions and EC_GF2m_simple_method always return a co