[Previous] [Next]

XSLPgettolset

Purpose

Retrieve the values of a set of convergence tolerances for an SLP problem

Synopsis

int XPRS_CC XSLPgettolset(XSLPprob Prob, int nSLPTol, int *Status, double *Tols);

Arguments

Prob	The current SLP problem.
nSLPTol	The index of the tolerance set.
Status	Address of integer to receive the bit-map of status settings. May be NULL if not required.
Tols	Array of 9 double-precision values to hold the tolerances. May be NULL if not required.

Example

The following example retrieves the values for tolerance set 3 and prints those which are set:

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]);

Further information

If 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. Status indicates which of these values is active as follows. Bit n of Status is set if Tols[n] is active, where n is:

0 Closure tolerance (TC)

1 Absolute delta tolerance (TA)

2 Relative delta tolerance (RA)

3 Absolute coefficient tolerance (TM)

4 Relative coefficient tolerance (RM)

5 Absolute impact tolerance (TI)

6 Relative impact tolerance (RI)

7 Absolute slack tolerance (TS)

8 Relative slack tolerance (RS)

0	Closure tolerance (TC)
1	Absolute delta tolerance (TA)
2	Relative delta tolerance (RA)
3	Absolute coefficient tolerance (TM)
4	Relative coefficient tolerance (RM)
5	Absolute impact tolerance (TI)
6	Relative impact tolerance (RI)
7	Absolute slack tolerance (TS)
8	Relative slack tolerance (RS)