Example: Convert $f=-29\mathrm{.}8$ to QII. $4$

Example: Convert $f=-3\mathrm{.}141593$ to Q$3\mathrm{.}12$

Calculate $f{2}^{12}=-12867\mathrm{.}964928$

Round the result to an integer, round $(-12867\mathrm{.}964928)=12868$

Convert the absolute value to binary $16-$bit: $12868={0011}_{}1{}_{0}010{}_1-10{}_2$

Final result in Hex: ExCDBC

Error: $-\frac{12868}{2^{12}}-f=8\mathrm{.}5625{10}^{-6}$