1 files changed, 6 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index e0cbf60..19e6d7f 100644
--- a/internal.h
+++ b/internal.h
@@ -18,12 +18,17 @@
 #ifndef BRILL_DATA_INTERNAL_H
 #define BRILL_DATA_INTERNAL_H
 
+#include <stddef.h>
+
 #include "brill_data.h"
 
 #define MAX(x, y) ((x) > (y) ? (x) : (y))
 #define SQR(x) ((x) * (x))
 
 #define ARRAY_ELEMS(x) (sizeof(x) / sizeof(x[0]))
+#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
+
+#define REQ_ALIGNMENT(x) (32 / sizeof(x))
 
 /*
  * small number to avoid r=0 singularities
@@ -62,6 +67,7 @@ typedef struct BDPriv {
     int nb_coeffs[2];
 
     double *coeffs;
+    ptrdiff_t coeffs_stride;
 } BDPriv;
 
 #define NB_COEFFS(s)        (s->nb_coeffs[0]        * s->nb_coeffs[1])