CREATE OR REPLACE FUNCTION
  if97_hmass_Tp(FLOAT8, FLOAT8)
  RETURNS FLOAT8 AS '$libdir/if97/if97.so', 'if97_hmass_Tp'
LANGUAGE C WITH ( ISSTRICT );

CREATE OR REPLACE FUNCTION
  if97_Tsat97(FLOAT8)
  RETURNS FLOAT8 AS '$libdir/if97/if97.so', 'if97_Tsat97'
LANGUAGE C WITH ( ISSTRICT );
