Initializing help system before first use

XSLP_PRESOLVE, NLPPRESOLVE

Description
This control determines whether presolving should be performed prior to starting the main algorithm
Type
Integer
Values
0 
Disable SLP presolve.
1 
Activate SLP presolve.
2 
Low memory presolve. Original problem is not restored by postsolve and dual solution may not be completely postsolved.
Default value
1
Note
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).
Affects routines
XSLPconstruct, XSLPpresolve
See also
XSLP_PRESOLVELEVEL, XSLP_PRESOLVEOPS, XSLP_REFORMULATE

Parent Topic Integer control parameters

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