[metapost] Metafun: the pi number in double precision

Franck Pastor franck.pastor at me.com
Sat Jan 25 09:05:31 CET 2014


I am still practicing with the brand new double number system. This time I noticed something wrong with the pi number as it is defined in the Metafun format.

With numbersystem=scaled,  "show pi;"  returns (as expected)

>> 3.14159

Now, with numbersystem set to double, it returns

>> 3.1415926

Only two more decimals, whereas I expected something with plenty of decimals, like


Is it a bug? or a feature? I couldn't help noticing that Metafun's answer is precisely the number version of the TeX's distribution to be found in TeX Live 2013…


Franck Pastor

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