maskLow52Bits = (1 << 52) - 1 return Element{ rand.Uint64() & maskLow52Bits, rand.Uint64() & maskLow52Bits, rand.Uint64() & maskLow52Bits, rand.Uint64() & maskLow52Bits, rand.Uint64() & maskLow52Bits, } } // weirdLimbs can be combined to generate a range of edge-case field elements. // 0 and -1 are intentionally more weighted, as they combine well. var ( weirdLimbs51 = []uint64{ 0, 0, 0, 0, 1, 19 - 1, 19, 0x2aaaaaaaaaaaa, 0x5555555555555, (1 << 51) - 20, (1 << 51) - 19, (1 << 51) - 1, (1 << 51) - 1, (1 <<...