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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include "dcurfitdef.h"
# CVZERO -- Procedure to zero the accumulators before doing
# a new fit in accumulate mode. The inner products of the basis functions
# are accumulated in the CV_ORDER(cv) by CV_NCOEFF(cv) array MATRIX, while
# the inner products of the basis functions and the data ordinates are
# accumulated in the CV_NCOEFF(cv)-vector VECTOR.
procedure dcvzero (cv)
pointer cv # pointer to curve descriptor
errchk mfree
begin
# zero the accumulators
CV_NPTS(cv) = 0
call aclrd (MATRIX(CV_MATRIX(cv)), CV_ORDER(cv)*CV_NCOEFF(cv))
call aclrd (VECTOR(CV_VECTOR(cv)), CV_NCOEFF(cv))
# free the basis functions defined from previous calls to cvrefit
if (CV_BASIS(cv) != NULL) {
call mfree (CV_BASIS(cv), TY_DOUBLE)
call mfree (CV_WY(cv), TY_DOUBLE)
CV_BASIS(cv) = NULL
CV_WY(cv) = NULL
if (CV_LEFT(cv) != NULL) {
call mfree (CV_LEFT(cv), TY_INT)
CV_LEFT(cv) = NULL
}
}
end
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