npbackend: implemented flatten and ravel as methods. Fixes #5 and #9

bridge/npbackend/src/_bhmodule.c

@@ -62,7 +62,7 @@ typedef struct
     int mmap_allocated;
 }BhArray;
 
-//Help function that returns number of bytes in 'ary' 
+//Help function that returns number of bytes in 'ary'
 //BUT minimum 'itemsize', which mimic the behavior of NumPy
 static int64_t ary_nbytes(const BhArray *ary)
 {
@@ -522,6 +522,12 @@ BhArray_reshape(PyObject *self, PyObject *args)
     return method2function("reshape", self, args);
 }
 
+static PyObject *
+BhArray_flatten(PyObject *self, PyObject *args)
+{
+    return method2function("flatten", self, args);
+}
+
 static PyObject *
 BhArray_sum(PyObject *self, PyObject *args)
 {
@@ -546,6 +552,8 @@ static PyMethodDef BhArrayMethods[] = {
     {"reshape", BhArray_reshape, METH_VARARGS, "a.reshape(shape)\n\nReturns an array"
                                                "containing the same data with a new shape.\n\n"
                                                "Refer to `bohrium.reshape` for full documentation."},
+    {"flatten", BhArray_flatten, METH_VARARGS, "a.flatten()\n\nReturn a copy of the array collapsed into one dimension."},
+    {"ravel", BhArray_flatten, METH_VARARGS, "a.ravel()\n\nReturn a copy of the array collapsed into one dimension."},
     {"sum", BhArray_sum, METH_VARARGS, "a.sum(axis=None, dtype=None, out=None)\n\n"
                                        "Return the sum of the array elements over the given axis.\n\n"
                                        "Refer to `bohrium.sum` for full documentation."},

test/python/test_views.py

@@ -15,6 +15,16 @@ def test_flatten(self,a):
         exec(cmd)
         return (res,cmd)
 
+    def test_flatten_self(self,a):
+        cmd = "res = a[0].flatten()"
+        exec(cmd)
+        return (res,cmd)
+
+    def test_ravel_self(self,a):
+        cmd = "res = a[0].ravel()"
+        exec(cmd)
+        return (res,cmd)
+
 class test_diagonal(numpytest):
 
     def init(self):