Converting 32F to 0C - Githubissues

doug-101 / ConvertAll-py

a flexible unit converter

http://convertall.bellz.org

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Converting 32F to 0C #5

Closed qlmackey closed 4 years ago

qlmackey commented 5 years ago

Found a fun bug

From Unit: F To Unit: C

if I enter 32 F I get 5.6843419E-14 C

but if I enter From Unit: C To Unit: F

entering 0C I get 32F

doug-101 commented 5 years ago

Not really a bug, just a consequence of computers calculating in binary without perfect precision.

You have to admit that 10^-14 is very, very close to zero.

Unfortunately, the application has no way of knowing what answers are legitimate small numbers and which should be rounded to a more appropriate answer.