8 Sep
2019
8 Sep
'19
1:12 p.m.
Chris,
In the ctypes wrapper we perform this test on entry:
if (type(main_loop[0]) != float): #return an error message
That's an imperfect test because lists can contain mixed types. To test an entire array would be a large performance penalty, so the developer must be sure that data passed in are all 64-bit float.
Typically data passed into a ctypes wrapper are read from a data store because the arrays are large. When read from a data store, the developer specifies the data type like this: newarray = (ctypes.c_double * len(arr))(*arr). So that ensures all data are of the same type.
Mark