E04UPF is a NAG routine used to fit a theoretical SKYDIP curve to the measured data by varying ETA_TEL, B and TAU. This routine is called by E04UPF to calculate the 1 non-linear constraint in the problem and/or it’s Jacobian at the current solution vector X. See the NAG manual if you need to know more about E04UPF.

The solution vector is composed as follows:-

• x(1) = ETA_TEL

• x(2) = B

• x(3) = TAU

The non-linear constraint limits ETA_TEL $\ast$ B. So, evaluation of the constraint gives:-

C(1) = ETA_TEL $\ast$ B

and its Jacobian has components :-

$$\frac{\partial C}{\partial x\left(1\right)}=B$$

(60)

$$\frac{\partial C}{\partial x\left(2\right)}={\eta }_{}$$ tel (61) $$$$ $$\frac{\partial C}{\partial x\left(2\right)}=0.0$$ (62) Invocation CALL SCULIB_SKYCON_1 (MODE, NCNLN, N, LDCJ, NEEDC, X, C, CJAC, NSTATE, IUSER, USER) Arguments See NAG manual description of CONFUN parameter in E04UPF. Copyright Copyright ©1993-1999 Particle Physics and Astronomy Research Council. All Rights Reserved. ←Prev  SURF Programming Interface Next→  TOC ↑