Hexadecimal Calculus

Is there a C function which allow to do some calculation with hexadecimal values ? Simple addition...
For example, I would like to do this:

unsigned char BCheckSum;
BCheckSUm = 0x0E + 0x11 + 0x2D;

Thank's for advance

 

[Salem]

Yes, that would be

BCheckSum = 0x0E + 0x11 + 0x2D;

Base is an illusion created for the presentation of numbers. It makes no difference to the maths whether you express those numbers in base 10 or base 16 or whatever.

// same thing in bases 10, 16 and 8 respectively
a = 16 + 10;
a = 0x10 + 0xa;
a = 020 + 012;

--

 

[amphibient]

you might want to use something a little bigger than an
unsigned char to hold sums. on many machines, the highest number you can hold is 256.