syntax question

Projects Programming
1

I'm trying to understand what this if statement is asking to be tru or not
if(bitRead(DCvalue[ch], chbit))

I'm not familiar with the comma expression.

Thanks

2

In this case the comma is separating the arguments of the bitread() function.

3

it tests IF/b] the CHBIT in element CHof array DCVALUE is set or not
a value of 0 => false
otherwise => true