How can these two examples have the same exponent?
.5 x 2^0 (0100 0000 0000 0000 0000 0000 0000 0000) -1 x 2^0 (1000 0000 0000 0000 0000 0000 0000 0000)
.5 x 2^0 has one decimal place, and -1 has no decimal places, so the value for .5 x 2^0 should be
.5 x 2^0 (0100 0000 0000 0000 0000 0000 0000 0010)
right? (0010 instead of 0001, because 1750A uses plus 1 bias)
How can the last example use all 32 bits and the first bit be 1, indicating a negative value?
0.7500001x2^4 (1001 1111 1111 1111 1111 1111 0000 0100)
I can see that a value with a 127 exponent should be 7F (0111 1111) but what about a value with a negative 127 exponent? Would it be 81 (1000 0001)? If so, is it because that is the two's complement +1 of 127?
谢谢