Editing Rounding
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This page describes how rounding appears to work in Fallen London. Note that this is based on observations, so if something appears inaccurate feel free to contribute. | This page describes how rounding appears to work in Fallen London. Note that this is based on observations, so if something appears inaccurate feel free to contribute. | ||
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==Quality levels== | ==Quality levels== | ||
| − | While most quality unlock requirements and change amounts are a set number, sometimes a more complex formula can be used. If this involves division or multiplication by a fraction then the resulting number is rounded. | + | While most quality unlock requirements and change amounts are a set number, sometimes a more complex formula can be used. If this involves division or multiplication by a fraction then the resulting number is rounded. |
In most cases, rounding behaves how you would expect. A number with the decimal part smaller than 0.5 is rounded down and a number with the decimal part greater than 0.5 is rounded up. If the number's decimal part is '''exactly''' 0.5 then the number is rounded ''to the nearest'' '''''even''''' ''number''. | In most cases, rounding behaves how you would expect. A number with the decimal part smaller than 0.5 is rounded down and a number with the decimal part greater than 0.5 is rounded up. If the number's decimal part is '''exactly''' 0.5 then the number is rounded ''to the nearest'' '''''even''''' ''number''. | ||
| − | For example, when [[Contract: a Worryingly Large Rat|hunting a large rat]] (after acquiring the first level of {{IL|A Name Scrawled in Blood}}), the action [[Expose yourself as bait]] determines the challenge difficulty level by multiplying the {{IL|Quarry's Savagery}} (15) by 1.5 to get 22.5. Usually this would be rounded up. However | + | For example, when [[Contract: a Worryingly Large Rat|hunting a large rat]] (after acquiring the first level of {{IL|A Name Scrawled in Blood}}), the action [[Expose yourself as bait]] determines the challenge difficulty level by multiplying the {{IL|Quarry's Savagery}} (15) by 1.5 to get 22.5. Usually this would be rounded up. However because 22 is even, in this case it is rounded down. |
While this may appear counter-intuitive, this is a standard implementation of rounding in much of modern software and presumably is also implemented in the software used by FBG. | While this may appear counter-intuitive, this is a standard implementation of rounding in much of modern software and presumably is also implemented in the software used by FBG. | ||
