calling C++ with numpy.array

[peeble111]

doCalcNew.codon

LIBRARY='/shd/privato/bridge/bin/dds-develop/src/libdds.so'
import numpy as np

from C import LIBRARY.CalcDDtable(np.ndarray[u32, 2], Ptr[i32]) -> i32

dl = np.array([[u32(24640), u32(16680), u32( 9216), u32( 1824)],
[u32( 2180), u32(14404), u32( 2344), u32( 2048)],
[u32( 1792), u32( 656), u32( 4112), u32(24772)],
[u32( 4152), u32( 1024), u32(17092), u32( 4120)]])

res = np.array([[i32(0), i32(0), i32(0), i32(0), i32(0)],
[i32(0), i32(0), i32(0), i32(0), i32(0)],
[i32(0), i32(0), i32(0), i32(0), i32(0)],
[i32(0), i32(0), i32(0), i32(0), i32(0)]])

print(f'dl.flags={dl.flags}')
print(f'res.flags={res.flags}')
#dl.flagsobj.OWNDATA = True
#res.flagsobj.OWNDATA = True

err = CalcDDtable(dl, res.data)

'''
// C++ definitions:

struct ddTableResults {int resTable[5][4];}
struct ddTableDeal {unsigned int cards[4][4];}

int CalcDDtable(struct ddTableDeal tableDeal, struct ddTableResults *tablep)
'''

end of codon source

codon run doCalcNew.codon:

dl.flags= C_CONTIGUOUS : True
F_CONTIGUOUS : False
OWNDATA : False
WRITEABLE : True
ALIGNED : True
WRITEBACKIFCOPY : False

res.flags= C_CONTIGUOUS : True
F_CONTIGUOUS : False
OWNDATA : False
WRITEABLE : True
ALIGNED : True
WRITEBACKIFCOPY : False

Segmentation fault codon run doCalcNew.codon