I'm a little confused about the latter suggestion, since I'm not sure integer operations would "sort out" floating point stuff,

That's my understanding also; but I was hoping ... :)

I have native 64-bit ints; so combining two of those to give me fixed point would give huge precision; no need to move to two 128-bit integers.

But I'm fuzzy on the implementation of fixed point floats using two ints. If you come across any pointers/notes/implementations I'd love to hear of it.

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In reply to Re^6: Need more precision. by BrowserUk
in thread Need more precision. by BrowserUk

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