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#include <isl/mat.h>

struct isl_mat {
        int ref;

        struct isl_ctx *ctx;

#define ISL_MAT_BORROWED                (1 << 0)
        unsigned flags;

        unsigned n_row;
        unsigned n_col;

        isl_int **row;

        /* actual size of the rows in memory; n_col <= max_col */
        unsigned max_col;

        struct isl_blk block;
};

__isl_give isl_mat *isl_mat_sub_alloc(__isl_keep isl_mat *mat,
        unsigned first_row, unsigned n_row, unsigned first_col, unsigned n_col);
__isl_give isl_mat *isl_mat_sub_alloc6(isl_ctx *ctx, isl_int **row,
        unsigned first_row, unsigned n_row, unsigned first_col, unsigned n_col);
void isl_mat_sub_copy(struct isl_ctx *ctx, isl_int **dst, isl_int **src,
        unsigned n_row, unsigned dst_col, unsigned src_col, unsigned n_col);
void isl_mat_sub_neg(struct isl_ctx *ctx, isl_int **dst, isl_int **src,
        unsigned n_row, unsigned dst_col, unsigned src_col, unsigned n_col);
__isl_give isl_mat *isl_mat_diag(isl_ctx *ctx, unsigned n_row, isl_int d);