how to convert a number in exponential form to normal decimal form?

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K Kaushik Subudhi
编辑： Stephen23 2018-6-6
I am trying to get the complete value of the number which is in exponential form but its not showing the complete value. I have tried below:
Code:
format long
pmod=hex2dec('DB7C2ABF62E35E668076BEAD208B');
fprintf('\n%.f',pmod);
Output : 4451685225093714900000000000000000
but the correct output should be 4451685225093714772084598273548427
Is there any other method to get the complete value?

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采纳的回答

Stephen23
Stephen23 2018-6-6
编辑：Stephen23 2018-6-6
That value is far too large to store in a double without loss of precision. You will need to use a custom data class, a symbolic variable, or store the output digits in a char vector. If you are okay with having the output digits in a char vector then you can download John D'Errico's excellent base2base function:
>> base2base('DB7C2ABF62E35E668076BEAD208B',16,10)
ans = 4451685225093714772084598273548427
You could easily convert the output of base2base to a symbolic variable.

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