How can I multiply 2 data that result in a 64 bit value? For example: unsigned long a = 4000000000, c; unsigned int b = 60000; c = a * b; //this have a problem!!! Has any library that can I use? Thanks Leonardo
You have to creat your own multiplication routine to achieve this. No library routine is there to have multi byte maths. You have to create your own routine.
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