sym_explicit_load

sym_explicit_load_problem

[f]sym_explicit_load_problem

int sym_explicit_load_problem_user(sym_environment * env, int numcols, 
                          int numrows, int *start, int *index, double *value, 
                          double *collb, double *colub, char *is_int, 
                          double *obj, double *obj2, char *rowsen, 
                          double *rowrhs, double *rowrng, char make_copy)

Description:

This routine is used to load a problem description into SYMPHONY manually. The constraint matrix is passed in a standard column-ordered format. The arguments here are the same as the fields in the MIPdesc data structure discussed in Section 6.3.2.1. Please see the discussion there for a more detailed description of the arguments here.

Arguments:

sym_environment *env INOUT Pointer to the SYMPHONY environment.

int numcols IN Number of the columns.

int numrows IN Number of the rows.

int *start IN Array of the starting positions of each of column.

int *index IN Array of the row indices corresponding to each entry of value.

int *value IN Array of the values of nonzero entries of the constraint matrix in column order.

double *collb IN Array of the lower bounds of the columns.

double *colub IN Array of the upper bounds of the columns.

double *obj IN Array of the objective function coefficients.

double *obj2 IN Array of the second objective function coefficients when multi criteria solver is to be used.

char *rowsen IN Array of the senses of the constraints.

'L': $\leq$ constraint

'E': = constraint

'G': $\geq$ constraint

'R': ranged constraint

'N': free constraint

double *rowrhs IN Array of the right hand side values.

double *rowrng IN Array of the row ranges.

(sym_get_row_upper) - (sym_get_row_lower) if the row sense is 'R', 0 otherwise.

char make_copy IN SYMPHONY will create the copies of these arrays for internal usage if this flag is set to true, otherwise, will own them.

Return values:

ERROR__USER Error. User error detected in

user_initialize_root_node function.

FUNCTION_TERMINATED_ABNORMALLY Function invoked unsuccessfully.

FUNCTION_TERMINATED_NORMALLY Function invoked successfully.

Ted Ralphs
2007-03-24

`sym_environment *env`	INOUT	Pointer to the SYMPHONY environment.
`int numcols`	IN	Number of the columns.
`int numrows`	IN	Number of the rows.
`int *start`	IN	Array of the starting positions of each of column.
`int *index`	IN	Array of the row indices corresponding to each entry of `value`.
`int *value`	IN	Array of the values of nonzero entries of the constraint matrix in column order.
`double *collb`	IN	Array of the lower bounds of the columns.
`double *colub`	IN	Array of the upper bounds of the columns.
`double *obj`	IN	Array of the objective function coefficients.
`double *obj2`	IN	Array of the second objective function coefficients when multi criteria solver is to be used.
`char *rowsen`	IN	Array of the senses of the constraints.
		'L': $\leq$ constraint
		'E': = constraint
		'G': $\geq$ constraint
		'R': ranged constraint
		'N': free constraint
`double *rowrhs`	IN	Array of the right hand side values.
`double *rowrng`	IN	Array of the row ranges.
		(`sym_get_row_upper`) - (`sym_get_row_lower`) if the row sense is `'R'`, 0 otherwise.
`char make_copy`	IN	SYMPHONY will create the copies of these arrays for internal usage if this flag is set to true, otherwise, will own them.

`ERROR__USER`	Error. User error detected in
	`user_initialize_root_node` function.
`FUNCTION_TERMINATED_ABNORMALLY`	Function invoked unsuccessfully.
`FUNCTION_TERMINATED_NORMALLY`	Function invoked successfully.