Rounding a decimal down
이전 댓글 표시
With round(x,2) I can round a number to the nearest hundredth, but how do I round down to the nearest hundredth? For example, both 0.143 and 0.147 should become 0.14.
채택된 답변
추가 답변 (2개)
x = [0.143 0.147];
floor(x*100)/100
Example:
X = 0.143;
Y = sprintf('%.2f',X);
Y = str2double(Y)
댓글 수: 2
It is more efficient to keep this in the numeric domain, rather than converting to text and back.
It also does not work, because SPRINTF rounds values to the nearest digit, it does not round down:
X = 0.147;
Y = sprintf('%.2f',X);
Y = str2double(Y) % Nope, definitely not rounded down.
The answers from Matt J and Les Beckham are correct.
Vilém Frynta
2022년 12월 3일
True, I just reffered to someone else's answer.
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