What's the exponent field has 255 exp of + one and value ∞?
Type Actual Exponent Exp (biased) Exponent field Significand (fraction field) Value
IEEE 754-1985
15189
text text text text text text
2-15189-4
Examples
Examples
Zero −127 0 0000 0000 000 0000 0000 0000 0000 0000 0.0
Negative zero −127 0 0000 0000 000 0000 0000 0000 0000 0000 −0.0
One 0 127 0111 1111 000 0000 0000 0000 0000 0000 1.0
Minus One 0 127 0111 1111 000 0000 0000 0000 0000 0000 −1.0
Smallest denormalized number −127 0 0000 0000 000 0000 0000 0000 0000 0001 ±2 −23 × 2 −126 = ±2 −149 ≈ ±1.4 × 10−
"Middle" denormalized number −127 0 0000 0000 100 0000 0000 0000 0000 0000 ±2 −1 × 2 −126 = ±2 −127 ≈ ±5.88 × 10−
Largest denormalized number −127 0 0000 0000 111 1111 1111 1111 1111 1111 ±(1−2 −23 ) × 2 −126 ≈ ±1.18 × 10−
Smallest normalized number −126 1 0000 0001 000 0000 0000 0000 0000 0000 ±2 −126 ≈ ±1.18 × 10−
Largest normalized number 127 254 1111 1110 111 1111 1111 1111 1111 1111 ±(2−2 −23 ) × 2 127 ≈ ±3.4 × 10
Positive infinity 128 255 1111 1111 000 0000 0000 0000 0000 0000 +∞
Negative infinity 128 255 1111 1111 000 0000 0000 0000 0000 0000 −∞
Not a number 128 255 1111 1111 non zero NaN
* Sign bit can be either 0 or 1. * Sign bit can be either 0 or 1. * Sign bit can be either 0 or 1. * Sign bit can be either 0 or 1. * Sign bit can be either 0 or 1. * Sign bit can be either 0 or 1.
SELECT Exponent field FROM table WHERE Exp (biased) = 255 AND Value = +∞
255 +∞