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by sitzkrieg 80 days ago
i apologize i missed this. the core hot loop was fairly straightforward to optimize and audit all aliasing. we ported from c89 to all cutting edge (at time) c99+ compilers. we still couldnt quite eek out that minor difference. the intel compiler unsurprisingly generated the most close asm for the machine

the fortran library we only had one license on a physical machine, i had to travel for one extensive recompilation of that side lol! it wasnt the library mentioned below, i would have to ask a collegue.