[Bf-cycles] Cycles range mapping math node

[Mohamed Sakr]

Hi,

is there a range mapping math node in Cycles?
consider a texture input "or any attribute", it is an array of data,
ranging [start, end], this node will do a pre-calculation to a new texture
using the required range [newStart, newEnd].

this will help a lot.
I can do it, just need a hint on: where to write the new functions "which
files/functions that are related to writing a new node".

and any suggestions would be helpful.

cheers,
Mohamed Sakr
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