22
IEEE floats in binary
*
-
1.
0110100111
*2
1011
+
1.
101101001
*2
-1
* okay, simplified to focus on the essential ideas.
•
Sign
: 1 bit
•
Significand
: always 1.
fraction
.
fraction
uses 23 bits
•
Biased
exponent
: 8 bits.
–
Bias: represent –127 to +127 by adding 127 (so
range is 0-254)