5e6c3e720d
Similar to 9b5f23c7a3
This commit updates the remaining three non-trivial preset curve types:
* CURVE_PRESET_ROUND - approximating `sqrtf(2x - x^2)`
* CURVE_PRESET_ROOT - approximating `sqrtf(x)`
* CURVE_PRESET_SHARP - approximating x^2
Like in the above commit, this change only affects the defined presets,
but does not change any existing curves in any files.
Related to #145208
Pull Request: https://projects.blender.org/blender/blender/pulls/147012