Added compatibility information

2 files changed, 59 insertions, 1 deletions

diff --git a/COMPATIBILITY b/COMPATIBILITY
new file mode 100644
index 000000000..4a7dd7f21
--- /dev/null
+++ b/COMPATIBILITY
@@ -0,0 +1,54 @@
+
+
+X.flat returns an indexable 1-D iterator (mostly similar to an array but always 1-d)
+
+long(<>)     -->  pylong(<>)  if from Numeric * was changed to from scipy.base import *
+
+.typecode()  -->  .dtypechar
+
+.iscontiguous() --> .flags['CONTIGUOUS']
+
+.byteswapped() -> .byteswap()
+
+.itemsize() -> .itemsize
+
+If you used typecode characters:
+
+'c' -> 'S1'
+'b' -> 'B'
+'1' -> 'b'
+'s' -> 'h'
+'w' -> 'H'
+'u' -> 'I'
+
+
+C -level
+
+some API calls that used to take PyObject * now take PyArrayObject * (this should only cause warnings during compile and not actual problems). 
+  PyArray_Take 
+
+These commands now return a buffer that must be freed once it is used
+using PyMemData_FREE(ptr) or PyMemData_XFREE(ptr);
+
+a->descr->zero       -->   PyArray_Zero(a)
+a->descr->one        -->   PyArray_One(a)
+
+Numeric/arrayobject.h  -->  scipy/arrayobject.h
+
+
+# These will actually work and are defines for PyArray_BYTE, 
+#   but you really should change it in your code
+PyArray_CHAR         -->  PyArray_BYTE  (or PyArray_STRING which is more flexible)  
+PyArray_SBYTE        -->  PyArray_BYTE
+
+Any uses of character codes will need adjusting....
+use PyArray_XXXLTR  where XXX is the name of the type.
+
+
+If you used function pointers directly (why did you do that?),
+the arguments have changed. 
+
+a->descr->cast[i](fromdata, fromstep, todata, tostep, n)
+a->descr->cast[i](fromdata, todata, n, PyArrayObject *in, PyArrayObject *out)
+
+
diff --git a/scipy/base/include/scipy/arrayobject.h b/scipy/base/include/scipy/arrayobject.h
index f3d12856f..124657553 100644
--- a/scipy/base/include/scipy/arrayobject.h
+++ b/scipy/base/include/scipy/arrayobject.h
@@ -1099,8 +1099,11 @@ typedef struct {
 #define PyTypeNum_ISUSERDEF(type) ((type >= PyArray_USERDEF) && \
 				   (type < PyArray_USERDEF+\
 				    PyArray_NUMUSERTYPES))
-				   
 
+#define PyTypeNum_ISEXTENDED(type) (((type >= PyArray_STRING) &&   \
+				     (type <= PyArray_VOID)) ||	   \
+				    (type >= PyArray_USERDEF))
+				    
 #define PyTypeNum_ISOBJECT(type) ((type) == PyArray_OBJECT)
 
 #define PyArray_ISBOOL(obj) PyTypeNum_ISBOOL(PyArray_TYPE(obj))
@@ -1114,6 +1117,7 @@ typedef struct {
 #define PyArray_ISPYTHONTYPE(obj) PyTypeNum_ISPYTHONTYPE(PyArray_TYPE(obj))
 #define PyArray_ISFLEXIBLE(obj) PyTypeNum_ISFLEXIBLE(PyArray_TYPE(obj))
 #define PyArray_ISUSERDEF(obj) PyTypeNum_ISUSERDEF(PyArray_TYPE(obj))
+#define PyArray_ISEXTENDED(obj) PyTypeNum_ISEXTENDED(PyArray_TYPE(obj))
 #define PyArray_ISOBJECT(obj) PyTypeNum_ISOBJECT(PyArray_TYPE(obj))
 
 /* Object arrays ignore notswapped flag */