PRESORT

This bit vector control specifies whether to sort rows, columns and global information by their names when starting the presolve. With the default value 0, no sorting will take place.

Integer

Bit	Meaning
0	Sort rows.
1	Sort columns.
2	Sort global information. This bit only affects MIP problems.

0

Sorting a problem by names can help obtain the same solution path when the rows, columns or global information of the problem is rearranged. It is recommended to enable all three bits when sorting a problem. When both PRESORT and PREPERMUTE are enabled, it will sort and then permute the problem.

XPRSlpoptimize ( LPOPTIMIZE), XPRSmipoptimize ( MIPOPTIMIZE).

PREPERMUTE, PRESOLVE, MIPPRESOLVE.