F_hi
#define F_hi(i) (T[(i)].F_hi)
#define ln2_hi F_hi(TSIZE - 1)
float F_hi; /* log(1 / G_i) rounded (see below) */
_3sumF(val_hi, val_lo, F_hi(i) + dk * ln2_hi);
_3sumF(val_hi, val_lo, F_hi(i) + dk * ln2_hi);
#define F_hi(i) (T[(i)].F_hi)
#define ln2_hi F_hi(TSIZE - 1)
float F_hi; /* log(1 / G_i) rounded (see below) */
_3sumF(val_hi, val_lo, F_hi(i) + dk * ln2_hi);
_3sumF(val_hi, val_lo, F_hi(i) + dk * ln2_hi);