1 files changed, 9 insertions, 0 deletions

diff --git a/apps/codecs/lib/codeclib.h b/apps/codecs/lib/codeclib.h
index 744accb8aa..477818a23d 100644
--- a/apps/codecs/lib/codeclib.h
+++ b/apps/codecs/lib/codeclib.h
@@ -57,6 +57,15 @@ void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, con
 
 extern void mdct_backward(int n, int32_t *in, int32_t *out);
 
+#if defined(CPU_ARM) && (ARM_ARCH == 4)
+/* optimised unsigned integer division for ARMv4, in IRAM */
+unsigned udiv32_arm(unsigned a, unsigned b);
+#define UDIV32(a, b) udiv32_arm(a, b)
+#else
+/* default */
+#define UDIV32(a, b) (a / b)
+#endif
+
 /* Various codec helper functions */
 
 int codec_init(void);