Crate normalize_css_z
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Normalize a CSS z-index to an f32 floating-point number between 0.0 and 1.0.
Theoretically, this is not entirely feasible because we can generate only
2^23 (subnormal) * 127 (normal) = 1065353216 distinct floating-point numbers in this range.
Therefore, please use this understanding the inherent limitations.
To begin with a practical approach, let’s cover these ranges of z-index values:
[ 1879048192, 2147483647][ -268435456, 268435455][-2147483647, -1887436800]
| upper | middle | lower | |—––|––––|—––| | 32 | 64 | 31 |
This should suffice for most use cases.
Later, I aim to expand this to allow for customizable ranges, but for now, this is adequate.