X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Falgo%2Framp.h;h=b1fe716fba0104c3f141355449aea2367a5bb08f;hb=d3774c5c1c4ebb4710773627068be0ad39a479e3;hp=f438dc5ebe1d7574566f85a16af5503731b745f5;hpb=791e167e053bdd9250d34a9a5ccae6ccde4d6679;p=bertos.git

diff --git a/bertos/algo/ramp.h b/bertos/algo/ramp.h
index f438dc5e..b1fe716f 100644
--- a/bertos/algo/ramp.h
+++ b/bertos/algo/ramp.h
@@ -114,7 +114,10 @@
  */
 #define FREQ2MICROS(hz) (1000000UL / ((uint32_t)(hz)))
 
-
+/**
+ * Multiply \p a and \p b two integer at 32 bit and extract the high 16 bit word.
+ */
+#define FIX_MULT32(a,b)  (((uint64_t)(a)*(uint32_t)(b)) >> 16)
 
 /**
  * Structure holding pre-calculated data for speeding up real-time evaluation