comparison DEPENDENCIES/mingw32/Python27/include/abstract.h @ 87:2a2c65a20a8b

Add Python libs and headers

+#ifndef Py_ABSTRACTOBJECT_H
+#define Py_ABSTRACTOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef PY_SSIZE_T_CLEAN
+#define PyObject_CallFunction _PyObject_CallFunction_SizeT
+#define PyObject_CallMethod _PyObject_CallMethod_SizeT
+#endif
+
+/* Abstract Object Interface (many thanks to Jim Fulton) */
+
+/*
+   PROPOSAL: A Generic Python Object Interface for Python C Modules
+
+Problem
+
+  Python modules written in C that must access Python objects must do
+  so through routines whose interfaces are described by a set of
+  include files.  Unfortunately, these routines vary according to the
+  object accessed.  To use these routines, the C programmer must check
+  the type of the object being used and must call a routine based on
+  the object type.  For example, to access an element of a sequence,
+  the programmer must determine whether the sequence is a list or a
+  tuple:
+
+    if(is_tupleobject(o))
+      e=gettupleitem(o,i)
+    else if(is_listitem(o))
+      e=getlistitem(o,i)
+
+  If the programmer wants to get an item from another type of object
+  that provides sequence behavior, there is no clear way to do it
+  correctly.
+
+  The persistent programmer may peruse object.h and find that the
+  _typeobject structure provides a means of invoking up to (currently
+  about) 41 special operators.  So, for example, a routine can get an
+  item from any object that provides sequence behavior. However, to
+  use this mechanism, the programmer must make their code dependent on
+  the current Python implementation.
+
+  Also, certain semantics, especially memory management semantics, may
+  differ by the type of object being used.  Unfortunately, these
+  semantics are not clearly described in the current include files.
+  An abstract interface providing more consistent semantics is needed.
+
+Proposal
+
+  I propose the creation of a standard interface (with an associated
+  library of routines and/or macros) for generically obtaining the
+  services of Python objects.  This proposal can be viewed as one
+  components of a Python C interface consisting of several components.
+
+  From the viewpoint of C access to Python services, we have (as
+  suggested by Guido in off-line discussions):
+
+  - "Very high level layer": two or three functions that let you exec or
+    eval arbitrary Python code given as a string in a module whose name is
+    given, passing C values in and getting C values out using
+    mkvalue/getargs style format strings.  This does not require the user
+    to declare any variables of type "PyObject *".  This should be enough
+    to write a simple application that gets Python code from the user,
+    execs it, and returns the output or errors.  (Error handling must also
+    be part of this API.)
+
+  - "Abstract objects layer": which is the subject of this proposal.
+    It has many functions operating on objects, and lest you do many
+    things from C that you can also write in Python, without going
+    through the Python parser.
+
+  - "Concrete objects layer": This is the public type-dependent
+    interface provided by the standard built-in types, such as floats,
+    strings, and lists.  This interface exists and is currently
+    documented by the collection of include files provided with the
+    Python distributions.
+
+  From the point of view of Python accessing services provided by C
+  modules:
+
+  - "Python module interface": this interface consist of the basic
+    routines used to define modules and their members.  Most of the
+    current extensions-writing guide deals with this interface.
+
+  - "Built-in object interface": this is the interface that a new
+    built-in type must provide and the mechanisms and rules that a
+    developer of a new built-in type must use and follow.
+
+  This proposal is a "first-cut" that is intended to spur
+  discussion. See especially the lists of notes.
+
+  The Python C object interface will provide four protocols: object,
+  numeric, sequence, and mapping.  Each protocol consists of a
+  collection of related operations.  If an operation that is not
+  provided by a particular type is invoked, then a standard exception,
+  NotImplementedError is raised with a operation name as an argument.
+  In addition, for convenience this interface defines a set of
+  constructors for building objects of built-in types.  This is needed
+  so new objects can be returned from C functions that otherwise treat
+  objects generically.
+
+Memory Management
+
+  For all of the functions described in this proposal, if a function
+  retains a reference to a Python object passed as an argument, then the
+  function will increase the reference count of the object.  It is
+  unnecessary for the caller to increase the reference count of an
+  argument in anticipation of the object's retention.
+
+  All Python objects returned from functions should be treated as new
+  objects.  Functions that return objects assume that the caller will
+  retain a reference and the reference count of the object has already
+  been incremented to account for this fact.  A caller that does not
+  retain a reference to an object that is returned from a function
+  must decrement the reference count of the object (using
+  DECREF(object)) to prevent memory leaks.
+
+  Note that the behavior mentioned here is different from the current
+  behavior for some objects (e.g. lists and tuples) when certain
+  type-specific routines are called directly (e.g. setlistitem).  The
+  proposed abstraction layer will provide a consistent memory
+  management interface, correcting for inconsistent behavior for some
+  built-in types.
+
+Protocols
+
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx*/
+
+/*  Object Protocol: */
+
+     /* Implemented elsewhere:
+
+     int PyObject_Print(PyObject *o, FILE *fp, int flags);
+
+     Print an object, o, on file, fp.  Returns -1 on
+     error.  The flags argument is used to enable certain printing
+     options. The only option currently supported is Py_Print_RAW.
+
+     (What should be said about Py_Print_RAW?)
+
+       */
+
+     /* Implemented elsewhere:
+
+     int PyObject_HasAttrString(PyObject *o, char *attr_name);
+
+     Returns 1 if o has the attribute attr_name, and 0 otherwise.
+     This is equivalent to the Python expression:
+     hasattr(o,attr_name).
+
+     This function always succeeds.
+
+       */
+
+     /* Implemented elsewhere:
+
+     PyObject* PyObject_GetAttrString(PyObject *o, char *attr_name);
+
+     Retrieve an attributed named attr_name form object o.
+     Returns the attribute value on success, or NULL on failure.
+     This is the equivalent of the Python expression: o.attr_name.
+
+       */
+
+     /* Implemented elsewhere:
+
+     int PyObject_HasAttr(PyObject *o, PyObject *attr_name);
+
+     Returns 1 if o has the attribute attr_name, and 0 otherwise.
+     This is equivalent to the Python expression:
+     hasattr(o,attr_name).
+
+     This function always succeeds.
+
+       */
+
+     /* Implemented elsewhere:
+
+     PyObject* PyObject_GetAttr(PyObject *o, PyObject *attr_name);
+
+     Retrieve an attributed named attr_name form object o.
+     Returns the attribute value on success, or NULL on failure.
+     This is the equivalent of the Python expression: o.attr_name.
+
+       */
+
+
+     /* Implemented elsewhere:
+
+     int PyObject_SetAttrString(PyObject *o, char *attr_name, PyObject *v);
+
+     Set the value of the attribute named attr_name, for object o,
+     to the value, v. Returns -1 on failure.  This is
+     the equivalent of the Python statement: o.attr_name=v.
+
+       */
+
+     /* Implemented elsewhere:
+
+     int PyObject_SetAttr(PyObject *o, PyObject *attr_name, PyObject *v);
+
+     Set the value of the attribute named attr_name, for object o,
+     to the value, v. Returns -1 on failure.  This is
+     the equivalent of the Python statement: o.attr_name=v.
+
+       */
+
+     /* implemented as a macro:
+
+     int PyObject_DelAttrString(PyObject *o, char *attr_name);
+
+     Delete attribute named attr_name, for object o. Returns
+     -1 on failure.  This is the equivalent of the Python
+     statement: del o.attr_name.
+
+       */
+#define  PyObject_DelAttrString(O,A) PyObject_SetAttrString((O),(A),NULL)
+
+     /* implemented as a macro:
+
+     int PyObject_DelAttr(PyObject *o, PyObject *attr_name);
+
+     Delete attribute named attr_name, for object o. Returns -1
+     on failure.  This is the equivalent of the Python
+     statement: del o.attr_name.
+
+       */
+#define  PyObject_DelAttr(O,A) PyObject_SetAttr((O),(A),NULL)
+
+     PyAPI_FUNC(int) PyObject_Cmp(PyObject *o1, PyObject *o2, int *result);
+
+       /*
+     Compare the values of o1 and o2 using a routine provided by
+     o1, if one exists, otherwise with a routine provided by o2.
+     The result of the comparison is returned in result.  Returns
+     -1 on failure.  This is the equivalent of the Python
+     statement: result=cmp(o1,o2).
+
+       */
+
+     /* Implemented elsewhere:
+
+     int PyObject_Compare(PyObject *o1, PyObject *o2);
+
+     Compare the values of o1 and o2 using a routine provided by
+     o1, if one exists, otherwise with a routine provided by o2.
+     Returns the result of the comparison on success.  On error,
+     the value returned is undefined. This is equivalent to the
+     Python expression: cmp(o1,o2).
+
+       */
+
+     /* Implemented elsewhere:
+
+     PyObject *PyObject_Repr(PyObject *o);
+
+     Compute the string representation of object, o.  Returns the
+     string representation on success, NULL on failure.  This is
+     the equivalent of the Python expression: repr(o).
+
+     Called by the repr() built-in function and by reverse quotes.
+
+       */
+
+     /* Implemented elsewhere:
+
+     PyObject *PyObject_Str(PyObject *o);
+
+     Compute the string representation of object, o.  Returns the
+     string representation on success, NULL on failure.  This is
+     the equivalent of the Python expression: str(o).)
+
+     Called by the str() built-in function and by the print
+     statement.
+
+       */
+
+     /* Implemented elsewhere:
+
+     PyObject *PyObject_Unicode(PyObject *o);
+
+     Compute the unicode representation of object, o.  Returns the
+     unicode representation on success, NULL on failure.  This is
+     the equivalent of the Python expression: unistr(o).)
+
+     Called by the unistr() built-in function.
+
+       */
+
+       /* Declared elsewhere
+
+     PyAPI_FUNC(int) PyCallable_Check(PyObject *o);
+
+     Determine if the object, o, is callable.  Return 1 if the
+     object is callable and 0 otherwise.
+
+     This function always succeeds.
+
+       */
+
+
+
+     PyAPI_FUNC(PyObject *) PyObject_Call(PyObject *callable_object,
+                                         PyObject *args, PyObject *kw);
+
+       /*
+     Call a callable Python object, callable_object, with
+     arguments and keywords arguments.  The 'args' argument can not be
+     NULL, but the 'kw' argument can be NULL.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyObject_CallObject(PyObject *callable_object,
+                                               PyObject *args);
+
+       /*
+     Call a callable Python object, callable_object, with
+     arguments given by the tuple, args.  If no arguments are
+     needed, then args may be NULL.  Returns the result of the
+     call on success, or NULL on failure.  This is the equivalent
+     of the Python expression: apply(o,args).
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyObject_CallFunction(PyObject *callable_object,
+                                                 char *format, ...);
+
+       /*
+     Call a callable Python object, callable_object, with a
+     variable number of C arguments. The C arguments are described
+     using a mkvalue-style format string. The format may be NULL,
+     indicating that no arguments are provided.  Returns the
+     result of the call on success, or NULL on failure.  This is
+     the equivalent of the Python expression: apply(o,args).
+
+       */
+
+
+     PyAPI_FUNC(PyObject *) PyObject_CallMethod(PyObject *o, char *m,
+                                               char *format, ...);
+
+       /*
+     Call the method named m of object o with a variable number of
+     C arguments.  The C arguments are described by a mkvalue
+     format string.  The format may be NULL, indicating that no
+     arguments are provided. Returns the result of the call on
+     success, or NULL on failure.  This is the equivalent of the
+     Python expression: o.method(args).
+       */
+
+     PyAPI_FUNC(PyObject *) _PyObject_CallFunction_SizeT(PyObject *callable,
+                                                         char *format, ...);
+     PyAPI_FUNC(PyObject *) _PyObject_CallMethod_SizeT(PyObject *o,
+                                                       char *name,
+                                                       char *format, ...);
+
+     PyAPI_FUNC(PyObject *) PyObject_CallFunctionObjArgs(PyObject *callable,
+                                                        ...);
+
+       /*
+     Call a callable Python object, callable_object, with a
+     variable number of C arguments.  The C arguments are provided
+     as PyObject * values, terminated by a NULL.  Returns the
+     result of the call on success, or NULL on failure.  This is
+     the equivalent of the Python expression: apply(o,args).
+       */
+
+
+     PyAPI_FUNC(PyObject *) PyObject_CallMethodObjArgs(PyObject *o,
+                                                      PyObject *m, ...);
+
+       /*
+     Call the method named m of object o with a variable number of
+     C arguments.  The C arguments are provided as PyObject *
+     values, terminated by NULL.  Returns the result of the call
+     on success, or NULL on failure.  This is the equivalent of
+     the Python expression: o.method(args).
+       */
+
+
+     /* Implemented elsewhere:
+
+     long PyObject_Hash(PyObject *o);
+
+     Compute and return the hash, hash_value, of an object, o.  On
+     failure, return -1.  This is the equivalent of the Python
+     expression: hash(o).
+
+       */
+
+
+     /* Implemented elsewhere:
+
+     int PyObject_IsTrue(PyObject *o);
+
+     Returns 1 if the object, o, is considered to be true, 0 if o is
+     considered to be false and -1 on failure. This is equivalent to the
+     Python expression: not not o
+
+       */
+
+     /* Implemented elsewhere:
+
+     int PyObject_Not(PyObject *o);
+
+     Returns 0 if the object, o, is considered to be true, 1 if o is
+     considered to be false and -1 on failure. This is equivalent to the
+     Python expression: not o
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyObject_Type(PyObject *o);
+
+       /*
+     On success, returns a type object corresponding to the object
+     type of object o. On failure, returns NULL.  This is
+     equivalent to the Python expression: type(o).
+       */
+
+     PyAPI_FUNC(Py_ssize_t) PyObject_Size(PyObject *o);
+
+       /*
+     Return the size of object o.  If the object, o, provides
+     both sequence and mapping protocols, the sequence size is
+     returned. On error, -1 is returned.  This is the equivalent
+     to the Python expression: len(o).
+
+       */
+
+       /* For DLL compatibility */
+#undef PyObject_Length
+     PyAPI_FUNC(Py_ssize_t) PyObject_Length(PyObject *o);
+#define PyObject_Length PyObject_Size
+
+     PyAPI_FUNC(Py_ssize_t) _PyObject_LengthHint(PyObject *o, Py_ssize_t);
+
+       /*
+     Guess the size of object o using len(o) or o.__length_hint__().
+     If neither of those return a non-negative value, then return the
+     default value.  If one of the calls fails, this function returns -1.
+       */
+
+     PyAPI_FUNC(PyObject *) PyObject_GetItem(PyObject *o, PyObject *key);
+
+       /*
+     Return element of o corresponding to the object, key, or NULL
+     on failure. This is the equivalent of the Python expression:
+     o[key].
+
+       */
+
+     PyAPI_FUNC(int) PyObject_SetItem(PyObject *o, PyObject *key, PyObject *v);
+
+       /*
+     Map the object, key, to the value, v.  Returns
+     -1 on failure.  This is the equivalent of the Python
+     statement: o[key]=v.
+       */
+
+     PyAPI_FUNC(int) PyObject_DelItemString(PyObject *o, char *key);
+
+       /*
+     Remove the mapping for object, key, from the object *o.
+     Returns -1 on failure.  This is equivalent to
+     the Python statement: del o[key].
+       */
+
+     PyAPI_FUNC(int) PyObject_DelItem(PyObject *o, PyObject *key);
+
+       /*
+     Delete the mapping for key from *o.  Returns -1 on failure.
+     This is the equivalent of the Python statement: del o[key].
+       */
+
+     PyAPI_FUNC(int) PyObject_AsCharBuffer(PyObject *obj,
+                                          const char **buffer,
+                                          Py_ssize_t *buffer_len);
+
+       /*
+      Takes an arbitrary object which must support the (character,
+      single segment) buffer interface and returns a pointer to a
+      read-only memory location useable as character based input
+      for subsequent processing.
+
+      0 is returned on success.  buffer and buffer_len are only
+      set in case no error occurs. Otherwise, -1 is returned and
+      an exception set.
+
+       */
+
+     PyAPI_FUNC(int) PyObject_CheckReadBuffer(PyObject *obj);
+
+      /*
+      Checks whether an arbitrary object supports the (character,
+      single segment) buffer interface.  Returns 1 on success, 0
+      on failure.
+
+      */
+
+     PyAPI_FUNC(int) PyObject_AsReadBuffer(PyObject *obj,
+                                          const void **buffer,
+                                          Py_ssize_t *buffer_len);
+
+       /*
+      Same as PyObject_AsCharBuffer() except that this API expects
+      (readable, single segment) buffer interface and returns a
+      pointer to a read-only memory location which can contain
+      arbitrary data.
+
+      0 is returned on success.  buffer and buffer_len are only
+      set in case no error occurs.  Otherwise, -1 is returned and
+      an exception set.
+
+       */
+
+     PyAPI_FUNC(int) PyObject_AsWriteBuffer(PyObject *obj,
+                                           void **buffer,
+                                           Py_ssize_t *buffer_len);
+
+       /*
+      Takes an arbitrary object which must support the (writeable,
+      single segment) buffer interface and returns a pointer to a
+      writeable memory location in buffer of size buffer_len.
+
+      0 is returned on success.  buffer and buffer_len are only
+      set in case no error occurs. Otherwise, -1 is returned and
+      an exception set.
+
+       */
+
+    /* new buffer API */
+
+#define PyObject_CheckBuffer(obj) \
+    (((obj)->ob_type->tp_as_buffer != NULL) &&                          \
+     (PyType_HasFeature((obj)->ob_type, Py_TPFLAGS_HAVE_NEWBUFFER)) && \
+     ((obj)->ob_type->tp_as_buffer->bf_getbuffer != NULL))
+
+    /* Return 1 if the getbuffer function is available, otherwise
+       return 0 */
+
+     PyAPI_FUNC(int) PyObject_GetBuffer(PyObject *obj, Py_buffer *view,
+                                        int flags);
+
+    /* This is a C-API version of the getbuffer function call.  It checks
+       to make sure object has the required function pointer and issues the
+       call.  Returns -1 and raises an error on failure and returns 0 on
+       success
+    */
+
+
+     PyAPI_FUNC(void *) PyBuffer_GetPointer(Py_buffer *view, Py_ssize_t *indices);
+
+    /* Get the memory area pointed to by the indices for the buffer given.
+       Note that view->ndim is the assumed size of indices
+    */
+
+     PyAPI_FUNC(int) PyBuffer_SizeFromFormat(const char *);
+
+    /* Return the implied itemsize of the data-format area from a
+       struct-style description */
+
+
+
+     PyAPI_FUNC(int) PyBuffer_ToContiguous(void *buf, Py_buffer *view,
+                                           Py_ssize_t len, char fort);
+
+     PyAPI_FUNC(int) PyBuffer_FromContiguous(Py_buffer *view, void *buf,
+                                             Py_ssize_t len, char fort);
+
+
+    /* Copy len bytes of data from the contiguous chunk of memory
+       pointed to by buf into the buffer exported by obj.  Return
+       0 on success and return -1 and raise a PyBuffer_Error on
+       error (i.e. the object does not have a buffer interface or
+       it is not working).
+
+       If fort is 'F' and the object is multi-dimensional,
+       then the data will be copied into the array in
+       Fortran-style (first dimension varies the fastest).  If
+       fort is 'C', then the data will be copied into the array
+       in C-style (last dimension varies the fastest).  If fort
+       is 'A', then it does not matter and the copy will be made
+       in whatever way is more efficient.
+
+    */
+
+     PyAPI_FUNC(int) PyObject_CopyData(PyObject *dest, PyObject *src);
+
+    /* Copy the data from the src buffer to the buffer of destination
+     */
+
+     PyAPI_FUNC(int) PyBuffer_IsContiguous(Py_buffer *view, char fort);
+
+
+     PyAPI_FUNC(void) PyBuffer_FillContiguousStrides(int ndims,
+                                                    Py_ssize_t *shape,
+                                                    Py_ssize_t *strides,
+                                                    int itemsize,
+                                                    char fort);
+
+    /*  Fill the strides array with byte-strides of a contiguous
+        (Fortran-style if fort is 'F' or C-style otherwise)
+        array of the given shape with the given number of bytes
+        per element.
+    */
+
+     PyAPI_FUNC(int) PyBuffer_FillInfo(Py_buffer *view, PyObject *o, void *buf,
+                                       Py_ssize_t len, int readonly,
+                                       int flags);
+
+    /* Fills in a buffer-info structure correctly for an exporter
+       that can only share a contiguous chunk of memory of
+       "unsigned bytes" of the given length. Returns 0 on success
+       and -1 (with raising an error) on error.
+     */
+
+     PyAPI_FUNC(void) PyBuffer_Release(Py_buffer *view);
+
+       /* Releases a Py_buffer obtained from getbuffer ParseTuple's s*.
+    */
+
+     PyAPI_FUNC(PyObject *) PyObject_Format(PyObject* obj,
+                                            PyObject *format_spec);
+       /*
+     Takes an arbitrary object and returns the result of
+     calling obj.__format__(format_spec).
+       */
+
+/* Iterators */
+
+     PyAPI_FUNC(PyObject *) PyObject_GetIter(PyObject *);
+     /* Takes an object and returns an iterator for it.
+    This is typically a new iterator but if the argument
+    is an iterator, this returns itself. */
+
+#define PyIter_Check(obj) \
+    (PyType_HasFeature((obj)->ob_type, Py_TPFLAGS_HAVE_ITER) && \
+     (obj)->ob_type->tp_iternext != NULL && \
+     (obj)->ob_type->tp_iternext != &_PyObject_NextNotImplemented)
+
+     PyAPI_FUNC(PyObject *) PyIter_Next(PyObject *);
+     /* Takes an iterator object and calls its tp_iternext slot,
+    returning the next value.  If the iterator is exhausted,
+    this returns NULL without setting an exception.
+    NULL with an exception means an error occurred. */
+
+/*  Number Protocol:*/
+
+     PyAPI_FUNC(int) PyNumber_Check(PyObject *o);
+
+       /*
+     Returns 1 if the object, o, provides numeric protocols, and
+     false otherwise.
+
+     This function always succeeds.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Add(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of adding o1 and o2, or null on failure.
+     This is the equivalent of the Python expression: o1+o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Subtract(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of subtracting o2 from o1, or null on
+     failure.  This is the equivalent of the Python expression:
+     o1-o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Multiply(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of multiplying o1 and o2, or null on
+     failure.  This is the equivalent of the Python expression:
+     o1*o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Divide(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of dividing o1 by o2, or null on failure.
+     This is the equivalent of the Python expression: o1/o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_FloorDivide(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of dividing o1 by o2 giving an integral result,
+     or null on failure.
+     This is the equivalent of the Python expression: o1//o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_TrueDivide(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of dividing o1 by o2 giving a float result,
+     or null on failure.
+     This is the equivalent of the Python expression: o1/o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Remainder(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the remainder of dividing o1 by o2, or null on
+     failure.  This is the equivalent of the Python expression:
+     o1%o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Divmod(PyObject *o1, PyObject *o2);
+
+       /*
+     See the built-in function divmod.  Returns NULL on failure.
+     This is the equivalent of the Python expression:
+     divmod(o1,o2).
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Power(PyObject *o1, PyObject *o2,
+                                          PyObject *o3);
+
+       /*
+     See the built-in function pow.  Returns NULL on failure.
+     This is the equivalent of the Python expression:
+     pow(o1,o2,o3), where o3 is optional.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Negative(PyObject *o);
+
+       /*
+     Returns the negation of o on success, or null on failure.
+     This is the equivalent of the Python expression: -o.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Positive(PyObject *o);
+
+       /*
+     Returns the (what?) of o on success, or NULL on failure.
+     This is the equivalent of the Python expression: +o.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Absolute(PyObject *o);
+
+       /*
+     Returns the absolute value of o, or null on failure.  This is
+     the equivalent of the Python expression: abs(o).
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Invert(PyObject *o);
+
+       /*
+     Returns the bitwise negation of o on success, or NULL on
+     failure.  This is the equivalent of the Python expression:
+     ~o.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Lshift(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of left shifting o1 by o2 on success, or
+     NULL on failure.  This is the equivalent of the Python
+     expression: o1 << o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Rshift(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of right shifting o1 by o2 on success, or
+     NULL on failure.  This is the equivalent of the Python
+     expression: o1 >> o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_And(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of bitwise and of o1 and o2 on success, or
+     NULL on failure. This is the equivalent of the Python
+     expression: o1&o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Xor(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the bitwise exclusive or of o1 by o2 on success, or
+     NULL on failure.  This is the equivalent of the Python
+     expression: o1^o2.
+
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Or(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of bitwise or on o1 and o2 on success, or
+     NULL on failure.  This is the equivalent of the Python
+     expression: o1|o2.
+
+       */
+
+     /* Implemented elsewhere:
+
+     int PyNumber_Coerce(PyObject **p1, PyObject **p2);
+
+     This function takes the addresses of two variables of type
+     PyObject*.
+
+     If the objects pointed to by *p1 and *p2 have the same type,
+     increment their reference count and return 0 (success).
+     If the objects can be converted to a common numeric type,
+     replace *p1 and *p2 by their converted value (with 'new'
+     reference counts), and return 0.
+     If no conversion is possible, or if some other error occurs,
+     return -1 (failure) and don't increment the reference counts.
+     The call PyNumber_Coerce(&o1, &o2) is equivalent to the Python
+     statement o1, o2 = coerce(o1, o2).
+
+       */
+
+#define PyIndex_Check(obj) \
+   ((obj)->ob_type->tp_as_number != NULL && \
+    PyType_HasFeature((obj)->ob_type, Py_TPFLAGS_HAVE_INDEX) && \
+    (obj)->ob_type->tp_as_number->nb_index != NULL)
+
+     PyAPI_FUNC(PyObject *) PyNumber_Index(PyObject *o);
+
+       /*
+     Returns the object converted to a Python long or int
+     or NULL with an error raised on failure.
+       */
+
+     PyAPI_FUNC(Py_ssize_t) PyNumber_AsSsize_t(PyObject *o, PyObject *exc);
+
+       /*
+     Returns the Integral instance converted to an int. The
+     instance is expected to be int or long or have an __int__
+     method. Steals integral's reference. error_format will be
+     used to create the TypeError if integral isn't actually an
+     Integral instance. error_format should be a format string
+     that can accept a char* naming integral's type.
+       */
+
+     PyAPI_FUNC(PyObject *) _PyNumber_ConvertIntegralToInt(
+         PyObject *integral,
+         const char* error_format);
+
+       /*
+    Returns the object converted to Py_ssize_t by going through
+    PyNumber_Index first.  If an overflow error occurs while
+    converting the int-or-long to Py_ssize_t, then the second argument
+    is the error-type to return.  If it is NULL, then the overflow error
+    is cleared and the value is clipped.
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Int(PyObject *o);
+
+       /*
+     Returns the o converted to an integer object on success, or
+     NULL on failure.  This is the equivalent of the Python
+     expression: int(o).
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Long(PyObject *o);
+
+       /*
+     Returns the o converted to a long integer object on success,
+     or NULL on failure.  This is the equivalent of the Python
+     expression: long(o).
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_Float(PyObject *o);
+
+       /*
+     Returns the o converted to a float object on success, or NULL
+     on failure.  This is the equivalent of the Python expression:
+     float(o).
+       */
+
+/*  In-place variants of (some of) the above number protocol functions */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceAdd(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of adding o2 to o1, possibly in-place, or null
+     on failure.  This is the equivalent of the Python expression:
+     o1 += o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceSubtract(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of subtracting o2 from o1, possibly in-place or
+     null on failure.  This is the equivalent of the Python expression:
+     o1 -= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceMultiply(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of multiplying o1 by o2, possibly in-place, or
+     null on failure.  This is the equivalent of the Python expression:
+     o1 *= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceDivide(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of dividing o1 by o2, possibly in-place, or null
+     on failure.  This is the equivalent of the Python expression:
+     o1 /= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceFloorDivide(PyObject *o1,
+                                                       PyObject *o2);
+
+       /*
+     Returns the result of dividing o1 by o2 giving an integral result,
+     possibly in-place, or null on failure.
+     This is the equivalent of the Python expression:
+     o1 /= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceTrueDivide(PyObject *o1,
+                                                      PyObject *o2);
+
+       /*
+     Returns the result of dividing o1 by o2 giving a float result,
+     possibly in-place, or null on failure.
+     This is the equivalent of the Python expression:
+     o1 /= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceRemainder(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the remainder of dividing o1 by o2, possibly in-place, or
+     null on failure.  This is the equivalent of the Python expression:
+     o1 %= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlacePower(PyObject *o1, PyObject *o2,
+                                                 PyObject *o3);
+
+       /*
+     Returns the result of raising o1 to the power of o2, possibly
+     in-place, or null on failure.  This is the equivalent of the Python
+     expression: o1 **= o2, or pow(o1, o2, o3) if o3 is present.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceLshift(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of left shifting o1 by o2, possibly in-place, or
+     null on failure.  This is the equivalent of the Python expression:
+     o1 <<= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceRshift(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of right shifting o1 by o2, possibly in-place or
+     null on failure.  This is the equivalent of the Python expression:
+     o1 >>= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceAnd(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of bitwise and of o1 and o2, possibly in-place,
+     or null on failure. This is the equivalent of the Python
+     expression: o1 &= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceXor(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the bitwise exclusive or of o1 by o2, possibly in-place, or
+     null on failure.  This is the equivalent of the Python expression:
+     o1 ^= o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PyNumber_InPlaceOr(PyObject *o1, PyObject *o2);
+
+       /*
+     Returns the result of bitwise or of o1 and o2, possibly in-place,
+     or null on failure.  This is the equivalent of the Python
+     expression: o1 |= o2.
+
+       */
+
+
+     PyAPI_FUNC(PyObject *) PyNumber_ToBase(PyObject *n, int base);
+
+       /*
+     Returns the integer n converted to a string with a base, with a base
+     marker of 0b, 0o or 0x prefixed if applicable.
+     If n is not an int object, it is converted with PyNumber_Index first.
+       */
+
+
+/*  Sequence protocol:*/
+
+     PyAPI_FUNC(int) PySequence_Check(PyObject *o);
+
+       /*
+     Return 1 if the object provides sequence protocol, and zero
+     otherwise.
+
+     This function always succeeds.
+
+       */
+
+     PyAPI_FUNC(Py_ssize_t) PySequence_Size(PyObject *o);
+
+       /*
+     Return the size of sequence object o, or -1 on failure.
+
+       */
+
+       /* For DLL compatibility */
+#undef PySequence_Length
+     PyAPI_FUNC(Py_ssize_t) PySequence_Length(PyObject *o);
+#define PySequence_Length PySequence_Size
+
+
+     PyAPI_FUNC(PyObject *) PySequence_Concat(PyObject *o1, PyObject *o2);
+
+       /*
+     Return the concatenation of o1 and o2 on success, and NULL on
+     failure.   This is the equivalent of the Python
+     expression: o1+o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PySequence_Repeat(PyObject *o, Py_ssize_t count);
+
+       /*
+     Return the result of repeating sequence object o count times,
+     or NULL on failure.  This is the equivalent of the Python
+     expression: o1*count.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PySequence_GetItem(PyObject *o, Py_ssize_t i);
+
+       /*
+     Return the ith element of o, or NULL on failure. This is the
+     equivalent of the Python expression: o[i].
+       */
+
+     PyAPI_FUNC(PyObject *) PySequence_GetSlice(PyObject *o, Py_ssize_t i1, Py_ssize_t i2);
+
+       /*
+     Return the slice of sequence object o between i1 and i2, or
+     NULL on failure. This is the equivalent of the Python
+     expression: o[i1:i2].
+
+       */
+
+     PyAPI_FUNC(int) PySequence_SetItem(PyObject *o, Py_ssize_t i, PyObject *v);
+
+       /*
+     Assign object v to the ith element of o.  Returns
+     -1 on failure.  This is the equivalent of the Python
+     statement: o[i]=v.
+
+       */
+
+     PyAPI_FUNC(int) PySequence_DelItem(PyObject *o, Py_ssize_t i);
+
+       /*
+     Delete the ith element of object v.  Returns
+     -1 on failure.  This is the equivalent of the Python
+     statement: del o[i].
+       */
+
+     PyAPI_FUNC(int) PySequence_SetSlice(PyObject *o, Py_ssize_t i1, Py_ssize_t i2,
+                                        PyObject *v);
+
+       /*
+     Assign the sequence object, v, to the slice in sequence
+     object, o, from i1 to i2.  Returns -1 on failure. This is the
+     equivalent of the Python statement: o[i1:i2]=v.
+       */
+
+     PyAPI_FUNC(int) PySequence_DelSlice(PyObject *o, Py_ssize_t i1, Py_ssize_t i2);
+
+       /*
+     Delete the slice in sequence object, o, from i1 to i2.
+     Returns -1 on failure. This is the equivalent of the Python
+     statement: del o[i1:i2].
+       */
+
+     PyAPI_FUNC(PyObject *) PySequence_Tuple(PyObject *o);
+
+       /*
+     Returns the sequence, o, as a tuple on success, and NULL on failure.
+     This is equivalent to the Python expression: tuple(o)
+       */
+
+
+     PyAPI_FUNC(PyObject *) PySequence_List(PyObject *o);
+       /*
+     Returns the sequence, o, as a list on success, and NULL on failure.
+     This is equivalent to the Python expression: list(o)
+       */
+
+     PyAPI_FUNC(PyObject *) PySequence_Fast(PyObject *o, const char* m);
+       /*
+     Return the sequence, o, as a list, unless it's already a
+     tuple or list.  Use PySequence_Fast_GET_ITEM to access the
+     members of this list, and PySequence_Fast_GET_SIZE to get its length.
+
+     Returns NULL on failure.  If the object does not support iteration,
+     raises a TypeError exception with m as the message text.
+       */
+
+#define PySequence_Fast_GET_SIZE(o) \
+    (PyList_Check(o) ? PyList_GET_SIZE(o) : PyTuple_GET_SIZE(o))
+       /*
+     Return the size of o, assuming that o was returned by
+     PySequence_Fast and is not NULL.
+       */
+
+#define PySequence_Fast_GET_ITEM(o, i)\
+     (PyList_Check(o) ? PyList_GET_ITEM(o, i) : PyTuple_GET_ITEM(o, i))
+       /*
+     Return the ith element of o, assuming that o was returned by
+     PySequence_Fast, and that i is within bounds.
+       */
+
+#define PySequence_ITEM(o, i)\
+    ( Py_TYPE(o)->tp_as_sequence->sq_item(o, i) )
+       /* Assume tp_as_sequence and sq_item exist and that i does not
+      need to be corrected for a negative index
+       */
+
+#define PySequence_Fast_ITEMS(sf) \
+    (PyList_Check(sf) ? ((PyListObject *)(sf))->ob_item \
+                      : ((PyTupleObject *)(sf))->ob_item)
+    /* Return a pointer to the underlying item array for
+       an object retured by PySequence_Fast */
+
+     PyAPI_FUNC(Py_ssize_t) PySequence_Count(PyObject *o, PyObject *value);
+
+       /*
+     Return the number of occurrences on value on o, that is,
+     return the number of keys for which o[key]==value.  On
+     failure, return -1.  This is equivalent to the Python
+     expression: o.count(value).
+       */
+
+     PyAPI_FUNC(int) PySequence_Contains(PyObject *seq, PyObject *ob);
+       /*
+     Return -1 if error; 1 if ob in seq; 0 if ob not in seq.
+     Use __contains__ if possible, else _PySequence_IterSearch().
+       */
+
+#define PY_ITERSEARCH_COUNT    1
+#define PY_ITERSEARCH_INDEX    2
+#define PY_ITERSEARCH_CONTAINS 3
+     PyAPI_FUNC(Py_ssize_t) _PySequence_IterSearch(PyObject *seq,
+                                        PyObject *obj, int operation);
+    /*
+      Iterate over seq.  Result depends on the operation:
+      PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if
+        error.
+      PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of
+        obj in seq; set ValueError and return -1 if none found;
+        also return -1 on error.
+      PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on
+        error.
+    */
+
+/* For DLL-level backwards compatibility */
+#undef PySequence_In
+     PyAPI_FUNC(int) PySequence_In(PyObject *o, PyObject *value);
+
+/* For source-level backwards compatibility */
+#define PySequence_In PySequence_Contains
+
+       /*
+     Determine if o contains value.  If an item in o is equal to
+     X, return 1, otherwise return 0.  On error, return -1.  This
+     is equivalent to the Python expression: value in o.
+       */
+
+     PyAPI_FUNC(Py_ssize_t) PySequence_Index(PyObject *o, PyObject *value);
+
+       /*
+     Return the first index for which o[i]=value.  On error,
+     return -1.    This is equivalent to the Python
+     expression: o.index(value).
+       */
+
+/* In-place versions of some of the above Sequence functions. */
+
+     PyAPI_FUNC(PyObject *) PySequence_InPlaceConcat(PyObject *o1, PyObject *o2);
+
+       /*
+     Append o2 to o1, in-place when possible. Return the resulting
+     object, which could be o1, or NULL on failure.  This is the
+     equivalent of the Python expression: o1 += o2.
+
+       */
+
+     PyAPI_FUNC(PyObject *) PySequence_InPlaceRepeat(PyObject *o, Py_ssize_t count);
+
+       /*
+     Repeat o1 by count, in-place when possible. Return the resulting
+     object, which could be o1, or NULL on failure.  This is the
+     equivalent of the Python expression: o1 *= count.
+
+       */
+
+/*  Mapping protocol:*/
+
+     PyAPI_FUNC(int) PyMapping_Check(PyObject *o);
+
+       /*
+     Return 1 if the object provides mapping protocol, and zero
+     otherwise.
+
+     This function always succeeds.
+       */
+
+     PyAPI_FUNC(Py_ssize_t) PyMapping_Size(PyObject *o);
+
+       /*
+     Returns the number of keys in object o on success, and -1 on
+     failure.  For objects that do not provide sequence protocol,
+     this is equivalent to the Python expression: len(o).
+       */
+
+       /* For DLL compatibility */
+#undef PyMapping_Length
+     PyAPI_FUNC(Py_ssize_t) PyMapping_Length(PyObject *o);
+#define PyMapping_Length PyMapping_Size
+
+
+     /* implemented as a macro:
+
+     int PyMapping_DelItemString(PyObject *o, char *key);
+
+     Remove the mapping for object, key, from the object *o.
+     Returns -1 on failure.  This is equivalent to
+     the Python statement: del o[key].
+       */
+#define PyMapping_DelItemString(O,K) PyObject_DelItemString((O),(K))
+
+     /* implemented as a macro:
+
+     int PyMapping_DelItem(PyObject *o, PyObject *key);
+
+     Remove the mapping for object, key, from the object *o.
+     Returns -1 on failure.  This is equivalent to
+     the Python statement: del o[key].
+       */
+#define PyMapping_DelItem(O,K) PyObject_DelItem((O),(K))
+
+     PyAPI_FUNC(int) PyMapping_HasKeyString(PyObject *o, char *key);
+
+       /*
+     On success, return 1 if the mapping object has the key, key,
+     and 0 otherwise.  This is equivalent to the Python expression:
+     o.has_key(key).
+
+     This function always succeeds.
+       */
+
+     PyAPI_FUNC(int) PyMapping_HasKey(PyObject *o, PyObject *key);
+
+       /*
+     Return 1 if the mapping object has the key, key,
+     and 0 otherwise.  This is equivalent to the Python expression:
+     o.has_key(key).
+
+     This function always succeeds.
+
+       */
+
+     /* Implemented as macro:
+
+     PyObject *PyMapping_Keys(PyObject *o);
+
+     On success, return a list of the keys in object o.  On
+     failure, return NULL. This is equivalent to the Python
+     expression: o.keys().
+       */
+#define PyMapping_Keys(O) PyObject_CallMethod(O,"keys",NULL)
+
+     /* Implemented as macro:
+
+     PyObject *PyMapping_Values(PyObject *o);
+
+     On success, return a list of the values in object o.  On
+     failure, return NULL. This is equivalent to the Python
+     expression: o.values().
+       */
+#define PyMapping_Values(O) PyObject_CallMethod(O,"values",NULL)
+
+     /* Implemented as macro:
+
+     PyObject *PyMapping_Items(PyObject *o);
+
+     On success, return a list of the items in object o, where
+     each item is a tuple containing a key-value pair.  On
+     failure, return NULL. This is equivalent to the Python
+     expression: o.items().
+
+       */
+#define PyMapping_Items(O) PyObject_CallMethod(O,"items",NULL)
+
+     PyAPI_FUNC(PyObject *) PyMapping_GetItemString(PyObject *o, char *key);
+
+       /*
+     Return element of o corresponding to the object, key, or NULL
+     on failure. This is the equivalent of the Python expression:
+     o[key].
+       */
+
+     PyAPI_FUNC(int) PyMapping_SetItemString(PyObject *o, char *key,
+                                            PyObject *value);
+
+       /*
+     Map the object, key, to the value, v.  Returns
+     -1 on failure.  This is the equivalent of the Python
+     statement: o[key]=v.
+      */
+
+
+PyAPI_FUNC(int) PyObject_IsInstance(PyObject *object, PyObject *typeorclass);
+      /* isinstance(object, typeorclass) */
+
+PyAPI_FUNC(int) PyObject_IsSubclass(PyObject *object, PyObject *typeorclass);
+      /* issubclass(object, typeorclass) */
+
+
+PyAPI_FUNC(int) _PyObject_RealIsInstance(PyObject *inst, PyObject *cls);
+
+PyAPI_FUNC(int) _PyObject_RealIsSubclass(PyObject *derived, PyObject *cls);
+
+
+/* For internal use by buffer API functions */
+PyAPI_FUNC(void) _Py_add_one_to_index_F(int nd, Py_ssize_t *index,
+                                        const Py_ssize_t *shape);
+PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index,
+                                        const Py_ssize_t *shape);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* Py_ABSTRACTOBJECT_H */