Crate normalize_css_z
source ·Expand description
Normalize a CSS z-index to an f32 floating-point number between 0.0 and 1.0. (not quite…)
Theoretically, this is not entirely feasible because we can generate only
2^23 (subnormal) * 127 (normal) = 1065353216 distinct floating-point numbers in this range.
And, the best part is that we only get a handful of precise numbers. Specifically, this crate can generate 67,108,865 unique floating-point numbers between 0.0 and 1.0, which should be more than sufficient for most use cases (hopefully).
Supported ranges of z-indexes
| upper | middle | lower |
| ------------------------- | ---------------------- | --------------------------- |
| `2130706432..=2147483647` | `-16777215..=16777216` | `-2147483647..=-2130706431` |
Later, I aim to expand this to allow for customizable ranges, but for now, this should be adequate.