add isl_mat_normalize_row

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/include/isl/mat.h b/include/isl/mat.h
index dfa74c2..eda1048 100644 (file)
--- a/include/isl/mat.h
+++ b/include/isl/mat.h
@@ -66,6 +66,7 @@ __isl_give isl_mat *isl_mat_right_inverse(__isl_take isl_mat *mat);
 __isl_give isl_mat *isl_mat_right_kernel(__isl_take isl_mat *mat);
 
 __isl_give isl_mat *isl_mat_normalize(__isl_take isl_mat *mat);
+__isl_give isl_mat *isl_mat_normalize_row(__isl_take isl_mat *mat, int row);
 
 struct isl_mat *isl_mat_drop_cols(struct isl_mat *mat,
                                unsigned col, unsigned n);

diff --git a/isl_mat.c b/isl_mat.c
index b351f0e..e64beae 100644 (file)
--- a/isl_mat.c
+++ b/isl_mat.c
@@ -1597,6 +1597,17 @@ __isl_give isl_mat *isl_mat_normalize(__isl_take isl_mat *mat)
        return mat;
 }
 
+__isl_give isl_mat *isl_mat_normalize_row(__isl_take isl_mat *mat, int row)
+{
+       mat = isl_mat_cow(mat);
+       if (!mat)
+               return NULL;
+
+       isl_seq_normalize(mat->ctx, mat->row[row], mat->n_col);
+
+       return mat;
+}
+
 /* Number of initial non-zero columns.
  */
 int isl_mat_initial_non_zero_cols(__isl_keep isl_mat *mat)