One does not simply calculate the absolute value

Re:One does not simply calculate the absolute value by titzer on Sunday August 22, 2021 @02:55PM (#28268372)

It's IEEE-754.

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Re:One does not simply calculate the absolute value by magicalhippo on Sunday August 22, 2021 @03:05PM (#28268468)

And there are algorithms that rely on this, like this[1] branchless axis-aligned bounding box intersection test.

It exploits the division by zero sign logic of IEEE-754, so that the min/max operations used also handles the edge cases where the ray is parallel to an axis.

[1]: https://tavianator.com/2011/ray_box.html

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