ision
floating point numbers.
For this purpose, the conversion functions,
<B>double2float</B> and <B>float2double</B> are provided
by <TT>clib/double.c</TT>.
For an instance, if you have a 3x3 float-matrix and want to pass it to a C
function named cfun as a matrix of double, use the following forms.
<PRE>
     (setq mat (make-matrix 3 3))
     (cfun (float2double (array-entity mat)))
</PRE>

<P>
Struct in C can be defined by the <B>defcstruct</B> macro.
<B>Defcstruct</B> accepts struct-name followed by 
fie