Logical Lines Of Code (LLOC)

ProjectCodeMeter

Logical Lines Of Code (LLOC)

Logical Lines Of Code is the number of programming language statements (also called Effective Lines Of Code, eLoc, eSLOC, SLOC-L) in the code. What comprises a code statement is language dependent, for C language "i = 5;" is a single statement.
ProjectCodeMeter uses an LLOC variant similar to the LLOC recommended by the COCOMO-II model (in contrast to popular belief, COCOMO-II doesn't use physical SLOC which includes empty and comment lines).
The LLOC count variant used by ProjectCodeMeter includes the following improvements:
- auto-generated code lines are ignored
- header files are ignored
- ineffective code statements are ignored
- pragma compiler directives are ignored
- labels are ignored
- switch cases are statements by themselves, not part of the next LLOC
- several statements on the same physical line are counted as several LLOC

Example:
for (i=0; i < 5; i++;){ //this line counts as 3 LLOCs by ProjectCodeMeter
CreateUser(i); //the line counts as 1 LLOC
} //this line counts as 0 LLOC

This LLOC variant can be used with legacy sizing algorithms and cost models, as a higher accuracy input replacement for the Source Lines Of Code (SLOC ) parameter, for example in COCOMO and COSYSMO.