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diff --git a/math/curfit/cvcoeffr.x b/math/curfit/cvcoeffr.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include "curfitdef.h"
+
+# CVCOEFF -- Procedure to fetch the number and magnitude of the coefficients.
+
+procedure cvcoeff (cv, coeff, ncoeff)
+
+pointer	cv		# curve descriptor
+real	coeff[ARB]	# the coefficients of the fit
+int	ncoeff		# the number of coefficients
+
+begin
+	ncoeff = CV_NCOEFF(cv)
+
+	# fetch coefficients
+	call amovr (COEFF(CV_COEFF(cv)), coeff, ncoeff)
+end