add isl_pw_multi_aff

[platform/upstream/isl.git] / isl_mat.c

diff --git a/isl_mat.c b/isl_mat.c
index 7a0d1a2..9724900 100644 (file)
--- a/isl_mat.c
+++ b/isl_mat.c
@@ -281,7 +281,7 @@ error:
        return NULL;
 }
 
-struct isl_mat *isl_mat_identity(struct isl_ctx *ctx, unsigned n_row)
+__isl_give isl_mat *isl_mat_diag(isl_ctx *ctx, unsigned n_row, isl_int d)
 {
        int i;
        struct isl_mat *mat;
@@ -291,13 +291,20 @@ struct isl_mat *isl_mat_identity(struct isl_ctx *ctx, unsigned n_row)
                return NULL;
        for (i = 0; i < n_row; ++i) {
                isl_seq_clr(mat->row[i], i);
-               isl_int_set_si(mat->row[i][i], 1);
+               isl_int_set(mat->row[i][i], d);
                isl_seq_clr(mat->row[i]+i+1, n_row-(i+1));
        }
 
        return mat;
 }
 
+__isl_give isl_mat *isl_mat_identity(isl_ctx *ctx, unsigned n_row)
+{
+       if (!ctx)
+               return NULL;
+       return isl_mat_diag(ctx, n_row, ctx->one);
+}
+
 struct isl_vec *isl_mat_vec_product(struct isl_mat *mat, struct isl_vec *vec)
 {
        int i;