Not sure if this is the most efficient of formulas, but i works for
me:-

=IF((A1-INT(A1))<0.25,FLOOR(A1,0.5),IF((A1-INT(A1))=0.75,CEILING(A1,0.5),IF((A1-INT(A1))<0.5,CEILING(A1,0.5),FLOOR(A1,0.5))))

Assuming your value is in A1, if there are to be negative numbers, you
may need to alter the formula to calculate on Absolute values

G


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Gary Brown
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