interpolate
static u32 interpolate(int val, int min, int max, u32 *tbl, size_t tbl_size)
#define interpolate(x, x1, y1, x2, y2, n) \
#undef interpolate
#define interpolate(x, x1, y1, x2, y2, n) \
#undef interpolate
#undef interpolate
#define interpolate(parm, old, new) \