Signed overflow optimization hazards in the kernel
Signed overflow optimization hazards in the kernel
Posted Aug 23, 2012 9:54 UTC (Thu) by georgm (subscriber, #19574)Parent article: Signed overflow optimization hazards in the kernel
A question:
What is the reason to write "if((a-b) < 0) ..." instead of just "if(a<b)"?
Posted Aug 23, 2012 10:28 UTC (Thu)
by georgm (subscriber, #19574)
[Link]
Signed overflow optimization hazards in the kernel
The question concerns signed values, where wraps are not common. Unsigned benefit is clear.