XSLPgettolset
Retrieve the values of a set of convergence tolerances for an SLP problem.
int XPRS_CC XSLPgettolset(XSLPprob prob, int tolset, int *p_status, double *tols);
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prob
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The current SLP problem.
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tolset
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The index of the tolerance set.
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p_status
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Address of integer to receive the bit-map of status settings. May be
NULL if not required.
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tols
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Array of 9 double-precision values to hold the tolerances. May be
NULL if not required.
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double tols[9];
int i, status;
XSLPgettolset(prob, 3, &status, tols);
for (i=0;i<9;i++)
if (status & (1<<i))
printf("\nTolerance %d = %lg",i,tols[i]);
If p_status or tols is NULL, then the corresponding information will not be returned.
If tols is not NULL, then a set of 9 values will always be returned. p_status indicates which of these values is active as follows. Bit n of p_status is set if tols[n] is active, where n is:
| 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.
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