STRTOUL not working as expected | developer.brewmp.com STRTOUL not working as expected | developer.brewmp.com

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STRTOUL not working as expected

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I have the following two lines:

 

char* strSeq = "02b9aa49605a5b8d";
unsigned long long seq = STRTOUL(strSeq, NULL, 16);

 

After exection seq is 0xFFFFFFFF.

 

How can I get a numerical representation of the string "02b9aa49605a5b8d"?