    performance, but may be needed for compatibility with old
         user-defined functions that are written in C and use the
         <SPAN
CLASS="QUOTE"
>"version 0"</SPAN
> calling convention.  A better long-term
         solution is to update any such functions to use the
         <SPAN
CLASS="QUOTE"
>"version 1"</SPAN
> calling convention.
         Note that this option affects not only float8, but also int8 and some
         related types such as timestamp.
         On 32-bit platforms, <TT
CLASS="O