If you replaced the sine function with a sawtooth wave (n - floor[n]), you would have continuous, uniformly distributed "pseudorandom" numbers from this method.

If you replaced the sine function with a sawtooth wave (n - floor[n]), you would have continuous, uniformly distributed "pseudorandom" numbers from this method. I think the round() function in CSS is still experimental, but you may be able to get a similar effect by intentionally underflowing a floating-point calculation. Arcsin(sin(x)) would also work, or arccos(sin(x)), but you would probably have to make an approximation of arcsin/arccos for yourself.