fix for mmx/float mixed code on ia32

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7847 818b1a75-f10b-46b9-bf7c-635c3b92a50f

openair1/PHY/TOOLS/signal_energy.c

@@ -67,6 +67,9 @@ int32_t subcarrier_energy(int32_t *input,uint32_t length, int32_t *subcarrier_en
     subcarrier_energy[i] = subcarrier_pwr*rx_power_correction;
   }
 
+  _mm_empty();
+  _m_empty();
+
   return i;
 }
 #endif
@@ -112,6 +115,9 @@ int32_t signal_energy(int32_t *input,uint32_t length)
   //  temp2<<=(2*shift_DC);
   temp -= temp2;
 
+  _mm_empty();
+  _m_empty();
+
   return((temp>0)?temp:1);
 }