aboutsummaryrefslogtreecommitdiff
path: root/math/curfit/cvvectord.x
blob: f23e988e3bae824e52308605c9cf906d8a083fd4 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.

include <math/curfit.h>

include "dcurfitdef.h"

# CVVECTOR -- Procedure to evaluate  a curve. The CV_NCOEFF(cv) coefficients
# are assumed to be in COEFF.

procedure dcvvector (cv, x, yfit, npts)

pointer	cv		# curve descriptor
double	x[npts]		# data x values
double	yfit[npts]	# the fitted y values
int	npts		# number of data points

begin
	switch (CV_TYPE(cv)) {
	case LEGENDRE:
	    call dcv_evleg (COEFF(CV_COEFF(cv)), x, yfit, npts, CV_ORDER(cv), 
		    CV_MAXMIN(cv), CV_RANGE(cv))
	case CHEBYSHEV:
	    call dcv_evcheb (COEFF(CV_COEFF(cv)), x, yfit, npts, CV_ORDER(cv), 
		    CV_MAXMIN(cv), CV_RANGE(cv))
	case SPLINE3:
	    call dcv_evspline3 (COEFF(CV_COEFF(cv)), x, yfit, npts,
	    			CV_NPIECES(cv), -CV_XMIN(cv), CV_SPACING(cv))
	case SPLINE1:
	    call dcv_evspline1 (COEFF(CV_COEFF(cv)), x, yfit, npts,
	    			CV_NPIECES(cv), -CV_XMIN(cv), CV_SPACING(cv))
	case USERFNC:
	    call dcv_evuser (cv, x, yfit, npts)
	}
end