 type that float parameters are
promoted to when passed by value in a function call.)

<P>
The following typedefs are used throughout the library and interfaces
to refer to certain objects whose size is dependent on the TIFF image
structure:


<P>
<TABLE BORDER CELLPADDING=3 WIDTH=100%>

<TR>
<TD WIDTH=25%>typedef unsigned int ttag_t;</TD>	<TD>directory tag</TD>
</TR>

<TR>
<TD>typedef uint16 tdir_t;</TD>		<TD>directory index</TD>
</TR>

<TR>
<TD>typedef uint16 tsample_t;</TD>	<TD>sample number</TD>
</TR>

