Add sets of standard tolerance values to an SLP problem

The following example creates two tolerance sets: the first has values of 0.005 for all tolerances; the second has values of 0.001 for relative tolerances (numbers 2,4,6,8), values of 0.01 for absolute tolerances (numbers 1,3,5,7) and zero for the closure tolerance (number 0).

double SLPTol[18];
for (i=0;i<9;i++) SLPTol[i] = 0.005;
SLPTol[9] = 0;
for (i=10;i<18;i=i+2) SLPTol[i] = 0.01;
for (i=11;i<18;i=i+2) SLPTol[i] = 0.001;
XSLPaddtolsets(Prob, 2, SLPTol);

A tolerance set is an array of 9 values containing the following tolerances:

Entry / Bit	Tolerance	XSLP constant	XSLP bit constant
0	Closure tolerance (TC)	XSLP_TOLSET_TC	XSLP_TOLSETBIT_TC
1	Absolute delta tolerance (TA)	XSLP_TOLSET_TA	XSLP_TOLSETBIT_TA
2	Relative delta tolerance (RA)	XSLP_TOLSET_RA	XSLP_TOLSETBIT_RA
3	Absolute coefficient tolerance (TM)	XSLP_TOLSET_TM	XSLP_TOLSETBIT_TM
4	Relative coefficient tolerance (RM)	XSLP_TOLSET_RM	XSLP_TOLSETBIT_RM
5	Absolute impact tolerance (TI)	XSLP_TOLSET_TI	XSLP_TOLSETBIT_TI
6	Relative impact tolerance (RI)	XSLP_TOLSET_RI	XSLP_TOLSETBIT_RI
7	Absolute slack tolerance (TS)	XSLP_TOLSET_TS	XSLP_TOLSETBIT_TS
8	Relative slack tolerance (RS)	XSLP_TOLSET_RS	XSLP_TOLSETBIT_RS

The XSLP_TOLSET constants can be used to access the corresponding entry in the value arrays, while the XSLP_TOLSETBIT constants are used to set or retrieve which tolerance values are used for a given SLP variable.

Once created, a tolerance set can be used to set the tolerances for any SLP variable.

If a tolerance value is zero, then the default tolerance will be used instead. To force the use of a zero tolerance, use the XSLPchgtolset function and set the Status variable appropriately.

See the section Convergence criteria for a fuller description of tolerances and their uses.

The XSLPadd... functions load additional items into the SLP problem. The corresponding XSLPload... functions delete any existing items first.

XSLPchgtolset, XSLPdeltolsets, XSLPgettolset, XSLPloadtolsets