Re^3: root function

sini@ordinalfabetix:~$ perl -le"print ((-3)**(1/3));"
nan
sini@ordinalfabetix:~$
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Exponent operator ** has higher priority than unary minus so you are doing -(3**(1/3)) instead of ((-3)**(1/3)).

This gives you accidentally the right result but it would tell you that square root of -2 == -1.414265...

Careful with that hash Eugene.

Comment on Re^3: root function Download Code

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Re^4: root function by ikegami (Patriarch) on Jun 21, 2008 at 21:58 UTC
Too slow! This gives you accidentally the right result but it would tell you that square root of -2 == -1.414265... But -1.414265... is a square root of 2. :) Update: Ack! ignore this post.	[reply]
Re^5: root function by sasdrtx (Friar) on Jun 21, 2008 at 23:17 UTC
More to the point: it is not the square root of -2. sas	[reply]
Re^5: root function by psini (Deacon) on Jun 21, 2008 at 22:03 UTC
Too slow? No, it is only that if I wait before answering, my answers worth more... proposition for Voting system :) Careful with that hash Eugene.	[reply]