help please!! head files can't work sometimes

Hi, guys.

I use visual studio 2015 with intel c++ compiler . Functions in my code sometimes can't get correct result type， it seems that the system can't detect the head files only if I recheck the head files.

For example ,this is one line in my code:   __m256d        scale_256d = _mm256_set_pd(scale, scale, scale, scale);

there is an error cause function _mm256_set_pd is defined as int _mm256_set_pd()

However in immintrin.h, it is extern __m256d __ICL_INTRINCC _mm256_set_pd(double, double, double, double);

Please help if you get the answer :)