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Removed variable

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Andrew Murray 2019-03-27 22:04:51 +11:00
parent 7b815a5f1d
commit 1a71faf8ea
1 changed files with 4 additions and 8 deletions
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12
src/_imaging.c
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@ -1265,10 +1265,9 @@ static PyObject*
_entropy(ImagingObject* self, PyObject* args) _entropy(ImagingObject* self, PyObject* args)
{ {
ImagingHistogram h; ImagingHistogram h;
PyObject* entropy;
int idx, length; int idx, length;
long sum; long sum;
double fentropy, fsum, p; double entropy, fsum, p;
union hist_extrema extrema; union hist_extrema extrema;
union hist_extrema* ep; union hist_extrema* ep;
@ -1295,21 +1294,18 @@ _entropy(ImagingObject* self, PyObject* args)
/* Next, normalize the histogram data, */ /* Next, normalize the histogram data, */
/* using the histogram sum value */ /* using the histogram sum value */
fsum = (double)sum; fsum = (double)sum;
fentropy = 0.0; entropy = 0.0;
for (idx = 0; idx < length; idx++) { for (idx = 0; idx < length; idx++) {
p = (double)h->histogram[idx] / fsum; p = (double)h->histogram[idx] / fsum;
if (p != 0.0) { if (p != 0.0) {
fentropy += p * log(p) * M_LOG2E; entropy += p * log(p) * M_LOG2E;
} }
} }
/* Finally, allocate a PyObject* for return */
entropy = PyFloat_FromDouble(-fentropy);
/* Destroy the histogram structure */ /* Destroy the histogram structure */
ImagingHistogramDelete(h); ImagingHistogramDelete(h);
return entropy; return PyFloat_FromDouble(-entropy);
} }
#ifdef WITH_MODEFILTER #ifdef WITH_MODEFILTER