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Forum Index : Microcontroller and PC projects : math(log10 0) problem

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ville56
Regular Member

Joined: 08/06/2022
Location: Austria
Posts: 75

Posted: 07:23pm 26 Jul 2024

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Peter,

just stepped on another mine ....

a=math(log10 0) executes with no error
but a subsequent "print a" throws

Error: Invalid address - resetting

the same error is thrown with "print math(log10 0)"

I would have expected an error of course with log(0) (something like "infinite result") but not a cpu restart when printing a variable afterwards.

Regards,
Gerald

73 de OE1HGA, Gerald

ville56
Regular Member

Joined: 08/06/2022
Location: Austria
Posts: 75

Posted: 07:28pm 26 Jul 2024

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... same happens for negative arguments ....

Gerald

73 de OE1HGA, Gerald

matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 8809

Posted: 10:27pm 26 Jul 2024

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Easily fixed but all it can do is create an error (play with log function) so you will need to code round it.

ville56
Regular Member

Joined: 08/06/2022
Location: Austria
Posts: 75

Posted: 04:31am 27 Jul 2024

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an error would be great as this would be in line with e.g. SQR() function throwing an error on negative values. So only the log10(0) is a new type of error i suppose.

73 de OE1HGA, Gerald

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