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# 8  
Old 05-24-2015
NB (c-->0) will decrement further, and in very long files can wrap around to positive values.
The usual safe expression is (c && c--).
This User Gave Thanks to MadeInGermany For This Post:
jiam912
# 9  
Old 05-24-2015
Quote:
Originally Posted by MadeInGermany
NB (c-->0) will decrement further, and in very long files can wrap around to positive values.
The usual safe expression is (c && c--).
This is not likely to be a problem in awk. Remember that arithmetic in awk is done using double precision floating point values; not long int. If you subtract 1 from a HUGE negative floating point value, you might end up with the value before and after the subtraction being the same value, but the sign should not change.
This User Gave Thanks to Don Cragun For This Post:
jiam912
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