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List: kde-commits
Subject: branches/work/kst/portto4/kst/src/libkstmath
From: Peter Kümmel <syntheticpp () gmx ! net>
Date: 2012-10-18 14:02:09
Message-ID: 20121018140209.267D2AC85B () svn ! kde ! org
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SVN commit 1321284 by kuemmel:
add comment about slower fft when build with mingw
M +4 -0 psdcalculator.cpp
--- branches/work/kst/portto4/kst/src/libkstmath/psdcalculator.cpp #1321283:1321284
@@ -29,6 +29,7 @@
#include <qnamespace.h>
#include <math_kst.h>
+#include "measuretime.h"
extern "C" void rdft(int n, int isgn, double *a);
@@ -190,6 +191,9 @@
memset(output, 0, sizeof(double)*outputLen); // initialize output.
+ // Mingw build could be 10 times slower (Gaussian apod, mostly 0 then?)
+ //MeasureTime time_in_rfdt("rdft()");
+
bool done = false;
for (i_subset = 0; !done; i_subset++) {
ioffset = i_subset*outputLen; //overlapping average => i_subset*outputLen
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