Stopping my function from doing iteration (infinite while loop)
显示 更早的评论
After achieving the desired result the loop continues, how can i stop this? if truefunction y = mysqrt(x,y0,tol) % this function calculates the square root of a number x as y given the % less appropriate guess y0. The function ceases to iterate when the the % difference between y0 and y is less than 1e-3.
y = (y0 + (x/y0))/2;
y = (y + (x/y))/2;
while abs(y-y0)>tol
y = (y + (x/y))/2
end
采纳的回答
Azzi Abdelmalek
2012-12-21
编辑：Azzi Abdelmalek
2012-12-21
function y = mysqrt(x,y0,tol)
y = (y0 + (x/y0))/2;
y = (y + (x/y))/2;
while abs(y^2-x)>tol
y = (y + (x/y))/2
end
5 个评论
A K
2012-12-21
A K
2012-12-21
Azzi Abdelmalek
2012-12-21
The while loop will be skipped. The result will be fine
A K
2012-12-21
Azzi Abdelmalek
2012-12-21
It's not clear
更多回答（1 个）
John Petersen
2012-12-21
编辑：John Petersen
2012-12-21
function y = mysqrt(x,y0,tol)
y = (y0 + (x/y0))/2;
while abs(y-y0)>tol
y0 = y;
y = (y + (x/y))/2;
end
Now I see Azzi's answer which is better because it tests against the desired result.
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