I ran below code with use integer line commented and uncommented.
print "\nmax neg num is $max_neg_num\n";
print "error is $error \n";
With use integer commented:
max neg num is 4294967295
error is -33
With use integer uncommented.
max neg num is -2
error is -32
When I looked at integer pragma documentation, it says numbers are wrapped around after largest +ve number i.e. 2^31-1. By that logic max neg number should be -1 represented by 2^32-1.
Also, I am surprised that without integer pragma, how come I am able to see the results correctly even though it is 32 bit machine? I think its a naive question, but I am afraid I will remain naive if I dont ask it. I would like to know how such arithmetic is handled on 32 bit machines. Is there a potability issue if I write the code as above with use integer commented?
Please enlighten me!!
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