Hi, I don't know exactly, but try replacing the one line %apply (float* INPLACE_ARRAY1, int DIM1) {(float *a, int na), (float *b, int nb)};
with two lines: %apply (float* INPLACE_ARRAY1, int DIM1) {(float *a, int na)}; %apply (float* INPLACE_ARRAY1, int DIM1) {(float *b, int nb)}; Don't know about the '{' '}' brakets. b could probably be "more general" as INPUT_ARRAY1 HTH -S. On Thu, May 20, 2010 at 1:43 AM, Steven Nien <steven.n...@gmail.com> wrote: > I want to pass 1 integer and 2 numpy array into the C function as > followings: > > void update_incident_field(int k, float *a, int na, float *b, int nb) { > for (i=0; i<na; i ++) { > a[i] = a[i] + b[i] * k; > } > } > > But I don't know how to write the interface code (***.i) > Can someone help me? > > Thanks! > > The swig interface code I written(did't work, strange output) > > %module example > %{ > #define SWIG_FILE_WITH_INIT > #include "example.h" > %} > %include "numpy.i" > > %init %{ > import_array(); > %} > > %apply (float* INPLACE_ARRAY1, int DIM1) {(float *a, int na), (float *b, int > nb)}; > > %include "example.h" > > > > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion > > _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion