ICP=1 Linear function

Linear function

$P_{cap}\quad=\quad\left\{\begin{matrix}-\thickspace\mathrm{CP}\left(1\right)&\mathrm{for}\thickspace S_l\le\thickspace\mathrm{CP}\ \left(2\right)\\0&\mathrm{for}\thickspace S_l\geq\mathrm{CP}\ \left(3\right)\\-\thickspace\mathrm{CP}\left(1\right)\frac{\mathrm{CP}\ \left(3\right)-S_l}{\mathrm{CP}\left(3\right)-\mathrm{CP}\ \left(2\right)}&\mathrm{for\ }\thickspace\mathrm{CP}\left(2\right)<S_l<\mathrm{\ CP}\ \left(3\right)\\\end{matrix}\right.$

Restriction: CP(3) > CP(2).

If CP(4) ≠ 0,

$P_{cgn}=P_{cap}(=P_{cgl})$

$P_{cap}(P_{cgl})=0$