This function will return the y-coordinate from the boxstep function

boxstep(a, b, x)

Returns: double

This function will return a value which is the y-coordinate in the boxstep function. It's the result of the convolution of a box filter with a step edge. The width of the box filter is (b - a).

double value = boxstep(0.25, 0.75, 0.5);

This function will set value to 0,5.

double value = boxstep(0.5, 0.6, 0);

This function will set value to 1.

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