XSLP_PRESOLVEOPS

Bitmap indicating the SLP presolve actions to be taken

Integer

Bit	Meaning
0	Generic SLP presolve.
1	Explicitly fix columns identified as fixed to zero.
2	Explicitly fix all columns identified as fixed.
3	SLP bound tightening.
4	MISLP bound tightening.
5	Bound tightening based on function domains.
8	Do not presolve coefficients.
9	Do not remove delta variables.
10	Avoid reductions that can not be dual postsolved.
11	Allow eliminations on determined variables.

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The Xpress NonLinear nonlinear presolve (which is carried out once, before augmentation) is independent of the Optimizer presolve (which is carried out during each SLP iteration).

XSLPconstruct, XSLPpresolve

XSLP_PRESOLVELEVEL, XSLP_PRESOLVE, XSLP_PRESOLVEOPS, XSLP_PRESOLVEPASSLIMIT, XSLP_REFORMULATE