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num2str(12​3456789012​3456789) returns '1234567890123456768'

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abhinibesh
abhinibesh el 18 de Mzo. de 2017
Respondida: Jan el 18 de Mzo. de 2017
Please help: command num2str(1234567890123456789) on matlab returns '1234567890123456768'...seems to be some overflow error, as last two digits have got changes from 89 to 68.

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Jan
Jan el 18 de Mzo. de 2017
Exactly. Matlab stores the values in the IEEE754 format, which use about 16 digits. This is the standard format for floating point numbers, such that this is not a problem of Matlab but a general decision for numerical software.
See https://www.mathworks.com/help/symbolic/vpa.html for using number with more digits.

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