#ifndef ISL_REORDERING_H
#define ISL_REORDERING_H

#include <isl/dim.h>

/* pos maps original dimensions to new dimensions.
 * The final dimension is given by dim.
 * The number of dimensions (i.e., the range of values) in the result
 * may be larger than the number of dimensions in the input.
 * In particular, the possible values of the entries in pos ranges from 0 to
 * the total dimension of dim - 1, unless isl_reordering_extend
 * has been called.
 */
struct isl_reordering {
	int ref;
	isl_dim *dim;
	unsigned len;
	int pos[1];
};
typedef struct isl_reordering isl_reordering;

__isl_give isl_reordering *isl_parameter_alignment_reordering(
	__isl_keep isl_dim *alignee, __isl_keep isl_dim *aligner);
__isl_give isl_reordering *isl_reordering_copy(__isl_keep isl_reordering *exp);
void isl_reordering_free(__isl_take isl_reordering *exp);
__isl_give isl_reordering *isl_reordering_extend_dim(
	__isl_take isl_reordering *exp, __isl_take isl_dim *dim);
__isl_give isl_reordering *isl_reordering_extend(__isl_take isl_reordering *exp,
	unsigned extra);

#endif
