following script doesn't go in infinite loop

DECLARE @i float,@rc int

set @i = 0

while @i <> 1

begin

set @i = @i + 0.8

set @i = @i + 0.1

set @i = @i + 0.1

print @i

end

But below script is going in infinite loop

DECLARE @i float,@rc int

set @i = 0

while @i <> 1

begin

set @i = @i + 0.7

set @i = @i + 0.1

set @i = @i + 0.1

set @i = @i + 0.1

print @i

end

Can any one know the answer on this??

Regards

Manmohan