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// rtoa-pgatram-openmp.cpp. Crude first attempt at an OpenMp version.
// Compile with:
...

   return 0;
}

$ time NUM_THREADS=1 ./rtoa-pgatram-openmp t1.txt t1.txt t1.txt t1.txt
+ >s.tmp
use OpenMP
...
real    0m1.278s
user    0m0.928s
sys     0m0.350s

$ time NUM_THREADS=4 ./rtoa-pgatram-openmp t1.txt t1.txt t1.txt t1.txt
+ >s.tmp
use OpenMP
...
sys     0m0.539s

$ cmp f.tmp s.tmp