fmt.Println("   x     y  cmp")
	fmt.Println("---------------")
	for _, x64 := range operands {
		x := big.NewFloat(x64)
		for _, y64 := range operands {
			y := big.NewFloat(y64)
			fmt.Printf("%4g  %4g  %3d\n", x, y, x.Cmp(y))
		}
		fmt.Println()
	}

	// Output:
	//    x     y  cmp
	// ---------------
	// -Inf  -Inf    0
	// -Inf  -1.2   -1
	// -Inf    -0   -1
	// -Inf     0   -1

		{0, io.SeekStart, 0},
		{-1, io.SeekEnd, int64(len(data)) - 1},
		{1 << 33, io.SeekStart, 1 << 33},
		{1 << 33, io.SeekEnd, 1<<33 + int64(len(data))},

		// Issue 21681, Windows 4G-1, etc:
		{1<<32 - 1, io.SeekStart, 1<<32 - 1},
		{0, io.SeekCurrent, 1<<32 - 1},
		{2<<32 - 1, io.SeekStart, 2<<32 - 1},
		{0, io.SeekCurrent, 2<<32 - 1},
	}
	for i, tt := range tests {