Moved declaration of comparison_func to fix build issues

Author: sterrettm2

src/xss-common-includes.h

@@ -106,4 +106,7 @@ struct avx2_half_vector;
 
 enum class simd_type : int { AVX2, AVX512 };
 
+template <typename vtype, typename T = typename vtype::type_t>
+X86_SIMD_SORT_INLINE bool comparison_func(const T &a, const T &b);
+
 #endif // XSS_COMMON_INCLUDES

src/xss-common-qsort.h

@@ -136,7 +136,7 @@ X86_SIMD_SORT_INLINE arrsize_t move_nans_to_end_of_array(T *arr, arrsize_t size)
     return size - count - 1;
 }
 
-template <typename vtype, typename T = typename vtype::type_t>
+template <typename vtype, typename T>
 X86_SIMD_SORT_INLINE bool comparison_func(const T &a, const T &b)
 {
     return a < b;

src/xss-pivot-selection.hpp

@@ -37,9 +37,6 @@ type_t next_value(type_t value){
 template <typename vtype, typename mm_t>
 X86_SIMD_SORT_INLINE void COEX(mm_t &a, mm_t &b);
 
-template <typename vtype, typename T>
-X86_SIMD_SORT_INLINE bool comparison_func(const T &a, const T &b);
-
 template <typename vtype, typename type_t>
 X86_SIMD_SORT_INLINE type_t get_pivot(type_t *arr,
                                       const arrsize_t left,