.TH CDERIVE
 6 "IRIT Version 6.0" 
.SH NAME
CDERIVE



 CurveType CDERIVE( CurveType Curve )

Returns a vector field curve representing the differentiated curve,
also known as the Hodograph curve.

Example:

 Circ = circle( vector( 0.0, 0.0, 0.0 ), 1.0 );
 Hodograph = CDERIVE( Circ );