SynthMaker

Round off hack

Archive · 2008 1 old post

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

infuzion ·

Eska here wrote: RNDINT streamin w; streamout int; float temp; temp=w+8.38861e+006; int=temp-8.38861e+006;

It works sometimes OK, but Rounds-to-even (banker's rounding). And it doesn't round off every other correctly either: 2.5 rounds to 2, but -2.5 becomes -2.5! 🙁

So, here is what I got: ASM seems more readable to me 🙂 streamin in;streamout int; float rounder=8388611; movaps xmm0,in; addps xmm0,rounder; subps xmm0,rounder; movaps int,xmm0; If Fabb or someone else could please give feedback or extra tips, that would be great. cheers

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