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Rounding is usually done by rounding up values that have a fractional part that is at least 0.5, and rounding down values that have a

Rounding is usually done by rounding up values that have a fractional part that is at least 0.5, and rounding down values that have a fractional part of less than 0.5. This means 14.55 is rounded to 15, while 2.3 is rounded to 2.

C/C++ does not have a rounding function. However, rounding can be achieved using the following math (the floor (Links to an external site.)Links to an external site. of x plus half):

image text in transcribedround(x)=x+12=2x+12

In the process of converting base-10 scientific notation to base-2 scientific notation, it not uncommon that we need to divide numbers by 10, and rounding can be integrated in the division:

image text in transcribedround(x10)=x10+12=x+510

The nice part is that integer division automatically truncates and for non-negative values, it is the same as taking the floor function.

Compute the difference between the rounded version and the truncated version of 10.18/10.

round(r 2 -1 - -1 2 round ( ) r+5 round(r 2 -1 - -1 2 round ( ) r+5

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