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include <math/curfit.h>
# AP_CVEVAL -- Interface to CVEVAL that avoids extrapolation.
# This is necessary because if the tracing was truncated due to loss
# of the profile the trace limits will be smaller than the image axis.
# In the longer term the aperture limits along the dispersion should be
# used to limit the extent of the spectrum.
real procedure ap_cveval (cv, x)
pointer cv #I CURFIT pointer
real x #I Point to be evaluated.
real x1, cvstatr(), cveval()
begin
x1 = min (max (x, cvstatr(cv,CVXMIN)), cvstatr(cv,CVXMAX))
return (cveval (cv, x1))
end
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