privately export isl_mat_unimodular_complete

diff --git a/isl_equalities.c b/isl_equalities.c
index 67fe05f..0632ddd 100644 (file)
--- a/isl_equalities.c
+++ b/isl_equalities.c
@@ -104,32 +104,6 @@ error:
        return NULL;
 }
 
-static struct isl_mat *unimodular_complete(struct isl_ctx *ctx,
-                                               struct isl_mat *M, int row)
-{
-       int r;
-       struct isl_mat *H = NULL, *Q = NULL;
-
-       isl_assert(ctx, M->n_row == M->n_col, goto error);
-       M->n_row = row;
-       H = isl_mat_left_hermite(ctx, isl_mat_copy(ctx, M), 0, NULL, &Q);
-       M->n_row = M->n_col;
-       if (!H)
-               goto error;
-       for (r = 0; r < row; ++r)
-               isl_assert(ctx, isl_int_is_one(H->row[r][r]), goto error);
-       for (r = row; r < M->n_row; ++r)
-               isl_seq_cpy(M->row[r], Q->row[r], M->n_col);
-       isl_mat_free(ctx, H);
-       isl_mat_free(ctx, Q);
-       return M;
-error:
-       isl_mat_free(ctx, H);
-       isl_mat_free(ctx, Q);
-       isl_mat_free(ctx, M);
-       return NULL;
-}
-
 /* Compute and return the matrix
  *
  *             U_1^{-1} diag(d_1, 1, ..., 1)
@@ -147,7 +121,7 @@ static struct isl_mat *parameter_compression_1(struct isl_ctx *ctx,
        if (!U)
                return NULL;
        isl_seq_cpy(U->row[0], B->row[0] + 1, B->n_col - 1);
-       U = unimodular_complete(ctx, U, 1);
+       U = isl_mat_unimodular_complete(ctx, U, 1);
        U = isl_mat_right_inverse(ctx, U);
        if (!U)
                return NULL;
@@ -193,7 +167,7 @@ static struct isl_mat *parameter_compression_multi(struct isl_ctx *ctx,
                goto error;
        for (i = 0; i < B->n_row; ++i) {
                isl_seq_cpy(U->row[0], B->row[i] + 1, size);
-               U = unimodular_complete(ctx, U, 1);
+               U = isl_mat_unimodular_complete(ctx, U, 1);
                if (!U)
                        goto error;
                isl_int_divexact(D, D, d->block.data[i]);

diff --git a/isl_mat.c b/isl_mat.c
index 10b81e3..4947c3d 100644 (file)
--- a/isl_mat.c
+++ b/isl_mat.c
@@ -987,3 +987,29 @@ void isl_mat_col_mul(struct isl_mat *mat, int dst_col, isl_int f, int src_col)
        for (i = 0; i < mat->n_row; ++i)
                isl_int_mul(mat->row[i][dst_col], f, mat->row[i][src_col]);
 }
+
+struct isl_mat *isl_mat_unimodular_complete(struct isl_ctx *ctx,
+                                               struct isl_mat *M, int row)
+{
+       int r;
+       struct isl_mat *H = NULL, *Q = NULL;
+
+       isl_assert(ctx, M->n_row == M->n_col, goto error);
+       M->n_row = row;
+       H = isl_mat_left_hermite(ctx, isl_mat_copy(ctx, M), 0, NULL, &Q);
+       M->n_row = M->n_col;
+       if (!H)
+               goto error;
+       for (r = 0; r < row; ++r)
+               isl_assert(ctx, isl_int_is_one(H->row[r][r]), goto error);
+       for (r = row; r < M->n_row; ++r)
+               isl_seq_cpy(M->row[r], Q->row[r], M->n_col);
+       isl_mat_free(ctx, H);
+       isl_mat_free(ctx, Q);
+       return M;
+error:
+       isl_mat_free(ctx, H);
+       isl_mat_free(ctx, Q);
+       isl_mat_free(ctx, M);
+       return NULL;
+}

diff --git a/isl_mat.h b/isl_mat.h
index 72aa593..97cc107 100644 (file)
--- a/isl_mat.h
+++ b/isl_mat.h
@@ -77,6 +77,9 @@ struct isl_basic_set *isl_basic_set_preimage(struct isl_basic_set *bset,
        struct isl_mat *mat);
 struct isl_set *isl_set_preimage(struct isl_set *set, struct isl_mat *mat);
 
+struct isl_mat *isl_mat_unimodular_complete(struct isl_ctx *ctx,
+                                               struct isl_mat *M, int row);
+
 void isl_mat_dump(struct isl_ctx *ctx, struct isl_mat *mat,
                                FILE *out, int indent);