Cutlery/calibre
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Kovid Goyal 2014-09-11 20:14:57 +05:30
parent 409b75c8fd
commit 3bcac0109a
1 changed files with 2 additions and 2 deletions
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src/calibre/utils/speedup.c
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@ -113,7 +113,7 @@ speedup_detach(PyObject *self, PyObject *args) {
static void calculate_gaussian_kernel(Py_ssize_t size, double *kernel, double radius) {
const double sqr = radius * radius;
const double factor = M_E / (2 * M_PI * sqr);
const double factor = 1.0 / (2 * M_PI * sqr);
const double denom = 2 * sqr;
double *t, sum = 0;
Py_ssize_t r, c, center = size / 2;
@ -121,7 +121,7 @@ static void calculate_gaussian_kernel(Py_ssize_t size, double *kernel, double ra
for (r = 0; r < size; r++) {
t = kernel + (r * size);
for (c = 0; c < size; c++) {
t[c] = factor - ( ( (r - center) * (r - center) + (c - center) * (c - center) ) / denom );
t[c] = factor * pow(M_E, - ( ( (r - center) * (r - center) + (c - center) * (c - center) ) / denom ));
}
}