I had an interesting problem with one of the sites I tried loading a while ago. weibo.com was using jQuery (version 1.7.2) which tries to detect browser
Browsers use fixed point maths internally for storing the results of many calculations. Often 26.6 bits, which gives 64 positions between (CSS) pixels, or 24.8 bits to give 256 levels of anti-aliasing in graphics.
Our initial design for CSS style tried to use the most applicable value possible, so for the width property we would store the parsed value as 26.6 precision but SVG values would often use 16.16 precision (the SVG Tiny 1.2 spec suggests this).
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