PWL2
Piecewise linear function with two segments.
Number: 4
Names: a1, k1, xi, k2
Meanings: a1 = Intercept, k1 = Slope, xi = Intersection, k2 = Slope
Lower Bounds: none
Upper Bounds: none
nlf_PWL2(x,a1,k1,xi,k2)
FITFUNC/PWL2.FDF
Piecewise