From: Robert H. <en...@no...> - 2005-06-08 20:50:57
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On Wed, 2005-06-08 at 15:31 +0300, Dimitrios Apostolou wrote: > Did anyone actually tried it to see the speed improvement? I have done > no benchmarks but what I described in an earlier email (how to plot big > SRTM files) now works *much* faster (*10 or more speed improvement). I've had a look into this using n x n ascii matrix (generated from perl's sin() function) Existing code: 66 seconds after adding: #define NO_FORTRAN_NUMS to top of datafile.c: 5.9 seconds. Rationale: I used callgrind (and kcachegrind) to profile gnuplot whilst loading this datafile. Turned out >95% of time was sping in the sscanf on datafile.c:759 Questions: Where did this "NO_FORTRAN_NUMS" option come from, and why isn't it enabled? Is Fortran number support useful? Could it be provided in an alternative way (perhaps a run time option)? Rob |