/usr/lib/python2.7/dist-packages/numpy/core/include/numpy/_neighborhood_iterator_imp.h is in python-numpy 1:1.12.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | #ifndef _NPY_INCLUDE_NEIGHBORHOOD_IMP
#error You should not include this header directly
#endif
/*
* Private API (here for inline)
*/
static NPY_INLINE int
_PyArrayNeighborhoodIter_IncrCoord(PyArrayNeighborhoodIterObject* iter);
/*
* Update to next item of the iterator
*
* Note: this simply increment the coordinates vector, last dimension
* incremented first , i.e, for dimension 3
* ...
* -1, -1, -1
* -1, -1, 0
* -1, -1, 1
* ....
* -1, 0, -1
* -1, 0, 0
* ....
* 0, -1, -1
* 0, -1, 0
* ....
*/
#define _UPDATE_COORD_ITER(c) \
wb = iter->coordinates[c] < iter->bounds[c][1]; \
if (wb) { \
iter->coordinates[c] += 1; \
return 0; \
} \
else { \
iter->coordinates[c] = iter->bounds[c][0]; \
}
static NPY_INLINE int
_PyArrayNeighborhoodIter_IncrCoord(PyArrayNeighborhoodIterObject* iter)
{
npy_intp i, wb;
for (i = iter->nd - 1; i >= 0; --i) {
_UPDATE_COORD_ITER(i)
}
return 0;
}
/*
* Version optimized for 2d arrays, manual loop unrolling
*/
static NPY_INLINE int
_PyArrayNeighborhoodIter_IncrCoord2D(PyArrayNeighborhoodIterObject* iter)
{
npy_intp wb;
_UPDATE_COORD_ITER(1)
_UPDATE_COORD_ITER(0)
return 0;
}
#undef _UPDATE_COORD_ITER
/*
* Advance to the next neighbour
*/
static NPY_INLINE int
PyArrayNeighborhoodIter_Next(PyArrayNeighborhoodIterObject* iter)
{
_PyArrayNeighborhoodIter_IncrCoord (iter);
iter->dataptr = iter->translate((PyArrayIterObject*)iter, iter->coordinates);
return 0;
}
/*
* Reset functions
*/
static NPY_INLINE int
PyArrayNeighborhoodIter_Reset(PyArrayNeighborhoodIterObject* iter)
{
npy_intp i;
for (i = 0; i < iter->nd; ++i) {
iter->coordinates[i] = iter->bounds[i][0];
}
iter->dataptr = iter->translate((PyArrayIterObject*)iter, iter->coordinates);
return 0;
}
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