diff --git a/apps/fracmul.h b/apps/fracmul.h
index 5cc83af624..5dbe4f9ef5 100644
--- a/apps/fracmul.h
+++ b/apps/fracmul.h
@@ -1,6 +1,9 @@
 #ifndef _FRACMUL_H
 #define _FRACMUL_H
 
+#include <stdint.h>
+#include "gcc_extensions.h"
+
 /** FRACTIONAL MULTIPLICATION - TAKEN FROM apps/dsp.h
  *  Multiply two fixed point numbers with 31 fractional bits:
  *      FRACMUL(x, y)
@@ -21,72 +24,78 @@
 /* Multiply two S.31 fractional integers and return the sign bit and the
  * 31 most significant bits of the result.
  */
-#define FRACMUL(x, y) \
-({ \
-    long t; \
-    asm ("mac.l    %[a], %[b], %%acc0\n\t" \
-         "movclr.l %%acc0, %[t]\n\t" \
-         : [t] "=r" (t) : [a] "r" (x), [b] "r" (y)); \
-    t; \
-})
+static inline int32_t FRACMUL(int32_t x, int32_t y)
+{
+    int32_t t;
+    asm ("mac.l    %[a], %[b], %%acc0\n\t"
+         "movclr.l %%acc0, %[t]\n\t"
+         : [t] "=r" (t) : [a] "r" (x), [b] "r" (y));
+    return t;
+}
 
 /* Multiply two S.31 fractional integers, and return the 32 most significant
  * bits after a shift left by the constant z. NOTE: Only works for shifts of
  * 1 to 8 on Coldfire!
  */
-#define FRACMUL_SHL(x, y, z) \
-({ \
-    long t, t2; \
-    asm ("mac.l    %[a], %[b], %%acc0\n\t" \
-         "moveq.l  %[d], %[t]\n\t" \
-         "move.l   %%accext01, %[t2]\n\t" \
-         "and.l    %[mask], %[t2]\n\t" \
-         "lsr.l    %[t], %[t2]\n\t" \
-         "movclr.l %%acc0, %[t]\n\t" \
-         "asl.l    %[c], %[t]\n\t" \
-         "or.l     %[t2], %[t]\n\t" \
-         : [t] "=&d" (t), [t2] "=&d" (t2) \
-         : [a] "r" (x), [b] "r" (y), [mask] "d" (0xff), \
-           [c] "i" ((z)), [d] "i" (8 - (z))); \
-    t; \
-})
+static inline FORCE_INLINE int32_t FRACMUL_SHL(int32_t x, int32_t y, int z)
+{
+    int32_t t, t2;
+    asm ("mac.l    %[a], %[b], %%acc0\n\t"
+         "move.l   %[d], %[t]\n\t"
+         "move.l   %%accext01, %[t2]\n\t"
+         "and.l    %[mask], %[t2]\n\t"
+         "lsr.l    %[t], %[t2]\n\t"
+         "movclr.l %%acc0, %[t]\n\t"
+         "asl.l    %[c], %[t]\n\t"
+         "or.l     %[t2], %[t]\n\t"
+         : [t] "=&d" (t), [t2] "=&d" (t2)
+         : [a] "r" (x), [b] "r" (y), [mask] "d" (0xff),
+           [c] "id" ((z)), [d] "id" (8 - (z)));
+    return t;
+}
 
 #elif defined(CPU_ARM)
 
 /* Multiply two S.31 fractional integers and return the sign bit and the
  * 31 most significant bits of the result.
  */
-#define FRACMUL(x, y) \
-({ \
-    long t, t2; \
-    asm ("smull    %[t], %[t2], %[a], %[b]\n\t" \
-         "mov      %[t2], %[t2], asl #1\n\t" \
-         "orr      %[t], %[t2], %[t], lsr #31\n\t" \
-         : [t] "=&r" (t), [t2] "=&r" (t2) \
-         : [a] "r" (x), [b] "r" (y)); \
-    t; \
-})
+static inline int32_t FRACMUL(int32_t x, int32_t y)
+{
+    int32_t t, t2;
+    asm ("smull    %[t], %[t2], %[a], %[b]\n\t"
+         "mov      %[t2], %[t2], asl #1\n\t"
+         "orr      %[t], %[t2], %[t], lsr #31\n\t"
+         : [t] "=&r" (t), [t2] "=&r" (t2)
+         : [a] "r" (x), [b] "r" (y));
+    return t;
+}
 
 /* Multiply two S.31 fractional integers, and return the 32 most significant
  * bits after a shift left by the constant z.
  */
-#define FRACMUL_SHL(x, y, z) \
-({ \
-    long t, t2; \
-    asm ("smull    %[t], %[t2], %[a], %[b]\n\t" \
-         "mov      %[t2], %[t2], asl %[c]\n\t" \
-         "orr      %[t], %[t2], %[t], lsr %[d]\n\t" \
-         : [t] "=&r" (t), [t2] "=&r" (t2) \
-         : [a] "r" (x), [b] "r" (y), \
-           [c] "M" ((z) + 1), [d] "M" (31 - (z))); \
-    t; \
-})
+static inline int32_t FRACMUL_SHL(int32_t x, int32_t y, int z)
+{
+    int32_t t, t2; \
+    asm ("smull    %[t], %[t2], %[a], %[b]\n\t"
+         "mov      %[t2], %[t2], asl %[c]\n\t"
+         "orr      %[t], %[t2], %[t], lsr %[d]\n\t"
+         : [t] "=&r" (t), [t2] "=&r" (t2)
+         : [a] "r" (x), [b] "r" (y),
+           [c] "M" ((z) + 1), [d] "M" (31 - (z)));
+    return t;
+}
 
 #else
 
-#define FRACMUL(x, y) (long) (((((long long) (x)) * ((long long) (y))) >> 31))
-#define FRACMUL_SHL(x, y, z) \
-((long)(((((long long) (x)) * ((long long) (y))) >> (31 - (z)))))
+static inline int32_t FRACMUL(int32_t x, int32_t y)
+{
+    return (int32_t) (((int64_t)x * y) >> 31);
+}
+
+static inline int32_t FRACMUL_SHL(int32_t x, int32_t y, int z)
+{
+    return (int32_t) (((int64_t)x * y) >> (31 - z));
+}
 
 #endif
 
diff --git a/firmware/include/gcc_extensions.h b/firmware/include/gcc_extensions.h
index f7580f6ddc..7109edaaf6 100644
--- a/firmware/include/gcc_extensions.h
+++ b/firmware/include/gcc_extensions.h
@@ -50,4 +50,11 @@
 #define NORETURN_ATTR
 #endif
 
+
+#if defined(__GNUC__)
+#define FORCE_INLINE inline __attribute__((always_inline))
+#else
+#define FORCE_INLINE inline
+#endif
+
 #endif /* _GCC_EXTENSIONS_H_ */