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640.9001,640 = <Float (-1)^0 * 1.0011111110000000000000000000000000000000000000000000 * 2^    9 - 00 0>         639 <Float (-1)^1 * 0.0000000000000000000000000000000000000000000000000000 * 2^      -1023 - 00 0>         639
640.9001,643 = <Float (-1)^0 * 1.0100000001110011001101100111101000001111100100001001 * 2^    9 - 00 0>         640 <Float (-1)^0 * 1.1100110011011001111010000011111001000010010000000000 * 2^   -1 - 00 0>         641