XSLP_CDTOL_R

Description	Relative tolerance for deducing constant derivatives
Type	Double
Default value	1.0e-08
Note	The relative tolerance test for constant derivatives is used as follows: If the value of the user function at point X₀ is Y₀ and the values at (X₀-δX) and (X₀+δX) are Y_d and Y_u respectively, then the numerical derivatives at X₀ are: "down" derivative D_d = (Y₀ - Y_d) / δX "up" derivative D_u = (Y_u - Y₀) / δX If abs(D_d-D_u) ≤ XSLP_CDTOL_R abs(Y_d+Y_u)/2* then the derivative is regarded as constant.
See also	XSLP_CDTOL_A