{
"alpha":"both coverage quantisers over every v in [-2^18, 2^18], as two tables (§3.8)",
"div255":"div255 over every input 0..=65025: the table's SHA-256 and the first x of each value (§3.9)",
"half_up":"R_half_up(p, s) at s = 0, 1, 16 and 17, ties of both signs and the widths of §3.12",
"interp":"track evaluation at the extremes: spans of 2^31 - 1 ticks, value steps of 2^23, non-monotone tables (§3.2)",
"r_rat":"R_rat(n, d) on windows with ties of both signs and at the driver's extremes (§3.0)",
"unpremul":"the straight-alpha channel R_rat(255c, A) over every c <= A (§2.9)"
}