add doc about periodic and wip for sse intel

Src/Utils/FSse.hpp

@@ -9,19 +9,19 @@
 
 #ifdef __INTEL_COMPILER
 
-__m128d& operator+=(const __m128d& v1, const __m128d& v2){
+__m128d& operator+=(__m128d& v1, const __m128d& v2){
     return (v1 = _mm_add_pd(v1, v2));
 }
 
-__m128d& operator-=(const __m128d& v1, const __m128d& v2){
+__m128d& operator-=(__m128d& v1, const __m128d& v2){
     return (v1 = _mm_sub_pd(v1, v2));
 }
 
-__m128d& operator*=(const __m128d& v1, const __m128d& v2){
+__m128d& operator*=(__m128d& v1, const __m128d& v2){
     return (v1 = _mm_mul_pd(v1, v2));
 }
 
-__m128d& operator/=(const __m128d& v1, const __m128d& v2){
+__m128d& operator/=(__m128d& v1, const __m128d& v2){
     return (v1 = _mm_div_pd(v1, v2));
 }