#include "data.h" extern float Have[HaveCount][Features] = { }; extern float Test[TestCount][Features] = { }; extern float None[NoneCount][Features] = { }; Node *f2n(uint8_t which, uint32_t idx) { float *p; switch (which) { case 1: p = Have[idx]; break; case 2: p = Test[idx]; break; } }