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// rtoa-pgatram-allinone.cpp. Crude allinone version.
// Compile with:
...

   return 0;
}

$ time ./rtoa-pgatram-allinone t1.txt t1.txt t1.txt t1.txt >f4.tmp
do_it_all time    :    1.034 secs
...
sys     0m0.081s

$ cmp f4.tmp fixed4.tmp

$ time ./rtoa-pgatram-fixed t1.txt t1.txt t1.txt t1.txt >f4.tmp
read_input_files  : 15996000 items
...
sys     0m0.270s

$ cmp f4.tmp fixed4.tmp

read_input_files  : 15996000 items
read file time    :    0.750 secs
...
real    0m1.529s
user    0m1.348s
sys     0m0.181s