Merged revisions 59541-59561 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r59544 | raymond.hettinger | 2007-12-18 01:13:45 +0100 (Tue, 18 Dec 2007) | 1 line

  Add more namedtuple() test cases.  Neaten the code and comments.
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  r59545 | christian.heimes | 2007-12-18 04:38:03 +0100 (Tue, 18 Dec 2007) | 3 lines

  Fixed for #1601: IDLE not working correctly on Windows (Py30a2/IDLE30a1)

  Amaury's ideas works great. Should we build the Python core with WINVER=0x0500 and _WIN32_WINNT=0x0500, too?
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  r59546 | christian.heimes | 2007-12-18 10:00:13 +0100 (Tue, 18 Dec 2007) | 1 line

  Make it a bit easier to test Tcl/Tk and idle from a build dir.
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  r59547 | christian.heimes | 2007-12-18 10:12:10 +0100 (Tue, 18 Dec 2007) | 1 line

  Removed several unused files from the PCbuild9 directory. They are relics from the past.
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  r59548 | raymond.hettinger | 2007-12-18 19:26:18 +0100 (Tue, 18 Dec 2007) | 29 lines

  Speed-up dictionary constructor by about 10%.

  New opcode, STORE_MAP saves the compiler from awkward stack manipulations
  and specializes for dicts using PyDict_SetItem instead of PyObject_SetItem.

  Old disassembly:
                0 BUILD_MAP                0
                3 DUP_TOP
                4 LOAD_CONST               1 (1)
                7 ROT_TWO
                8 LOAD_CONST               2 ('x')
               11 STORE_SUBSCR
               12 DUP_TOP
               13 LOAD_CONST               3 (2)
               16 ROT_TWO
               17 LOAD_CONST               4 ('y')
               20 STORE_SUBSCR

  New disassembly:
                0 BUILD_MAP                0
                3 LOAD_CONST               1 (1)
                6 LOAD_CONST               2 ('x')
                9 STORE_MAP
               10 LOAD_CONST               3 (2)
               13 LOAD_CONST               4 ('y')
               16 STORE_MAP
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  r59549 | thomas.heller | 2007-12-18 20:00:34 +0100 (Tue, 18 Dec 2007) | 2 lines

  Issue #1642: Fix segfault in ctypes when trying to delete attributes.
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  r59551 | guido.van.rossum | 2007-12-18 21:10:42 +0100 (Tue, 18 Dec 2007) | 2 lines

  Issue #1645 by Alberto Bertogli.  Fix a comment.
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  r59553 | raymond.hettinger | 2007-12-18 22:24:09 +0100 (Tue, 18 Dec 2007) | 12 lines

  Give meaning to the oparg for BUILD_MAP:  estimated size of the dictionary.

  Allows dictionaries to be pre-sized (upto 255 elements) saving time lost
  to re-sizes with their attendant mallocs and re-insertions.

  Has zero effect on small dictionaries (5 elements or fewer), a slight
  benefit for dicts upto 22 elements (because they had to resize once
  anyway), and more benefit for dicts upto 255 elements (saving multiple
  resizes during the build-up and reducing the number of collisions on
  the first insertions).  Beyond 255 elements, there is no addional benefit.
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  r59554 | christian.heimes | 2007-12-18 22:56:09 +0100 (Tue, 18 Dec 2007) | 1 line

  Fixed #1649: IDLE error: dictionary changed size during iteration
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  r59557 | raymond.hettinger | 2007-12-18 23:21:27 +0100 (Tue, 18 Dec 2007) | 1 line

  Simplify and speedup _asdict() for named tuples.
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  r59558 | christian.heimes | 2007-12-19 00:22:54 +0100 (Wed, 19 Dec 2007) | 3 lines

  Applied patch #1635: Float patch for inf and nan on Windows (and other platforms).

  The patch unifies float("inf") and repr(float("inf")) on all platforms.
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  r59559 | raymond.hettinger | 2007-12-19 00:51:15 +0100 (Wed, 19 Dec 2007) | 1 line

  Users demand iterable input for named tuples. The author capitulates.
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  r59560 | raymond.hettinger | 2007-12-19 01:21:06 +0100 (Wed, 19 Dec 2007) | 1 line

  Beef-up tests for dict literals
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  r59561 | raymond.hettinger | 2007-12-19 01:27:21 +0100 (Wed, 19 Dec 2007) | 1 line

  Zap a duplicate line
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5 files changed, 58 insertions, 0 deletions

diff --git a/Include/Python.h b/Include/Python.h
index fef57b4..d8c2a56 100644
--- a/Include/Python.h
+++ b/Include/Python.h
@@ -114,6 +114,7 @@
 #include "eval.h"
 
 #include "pystrtod.h"
+#include "pystrcmp.h"
 
 /* _Py_Mangle is defined in compile.c */
 PyAPI_FUNC(PyObject*) _Py_Mangle(PyObject *p, PyObject *name);
diff --git a/Include/dictobject.h b/Include/dictobject.h
index 0d8a09b..afc55af 100644
--- a/Include/dictobject.h
+++ b/Include/dictobject.h
@@ -123,6 +123,7 @@ PyAPI_FUNC(Py_ssize_t) PyDict_Size(PyObject *mp);
 PyAPI_FUNC(PyObject *) PyDict_Copy(PyObject *mp);
 PyAPI_FUNC(int) PyDict_Contains(PyObject *mp, PyObject *key);
 PyAPI_FUNC(int) _PyDict_Contains(PyObject *mp, PyObject *key, long hash);
+PyAPI_FUNC(PyObject *) _PyDict_NewPresized(Py_ssize_t minused);
 
 /* PyDict_Update(mp, other) is equivalent to PyDict_Merge(mp, other, 1). */
 PyAPI_FUNC(int) PyDict_Update(PyObject *mp, PyObject *other);
diff --git a/Include/opcode.h b/Include/opcode.h
index 100262a..7bdf1c9 100644
--- a/Include/opcode.h
+++ b/Include/opcode.h
@@ -36,6 +36,7 @@ extern "C" {
 #define INPLACE_FLOOR_DIVIDE 28
 #define INPLACE_TRUE_DIVIDE 29
 
+#define STORE_MAP	54
 #define INPLACE_ADD	55
 #define INPLACE_SUBTRACT	56
 #define INPLACE_MULTIPLY	57
diff --git a/Include/pyport.h b/Include/pyport.h
index 266c13a..82d305c 100644
--- a/Include/pyport.h
+++ b/Include/pyport.h
@@ -332,6 +332,17 @@ extern "C" {
 #define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) (NARROW)(VALUE)
 #endif
 
+/* High precision defintion of pi and e (Euler)
+ * The values are taken from libc6's math.h.
+ */
+#ifndef Py_MATH_PI
+#define Py_MATH_PI 3.1415926535897932384626433832795029L
+#endif
+
+#ifndef Py_MATH_E
+#define Py_MATH_E 2.7182818284590452353602874713526625L
+#endif
+
 /* Py_IS_NAN(X)
  * Return 1 if float or double arg is a NaN, else 0.
  * Caution:
@@ -341,8 +352,12 @@ extern "C" {
  *     a platform where it doesn't work.
  */
 #ifndef Py_IS_NAN
+#ifdef HAVE_ISNAN
+#define Py_IS_NAN(X) isnan(X)
+#else
 #define Py_IS_NAN(X) ((X) != (X))
 #endif
+#endif
 
 /* Py_IS_INFINITY(X)
  * Return 1 if float or double arg is an infinity, else 0.
@@ -353,8 +368,12 @@ extern "C" {
  *    Override in pyconfig.h if you have a better spelling on your platform.
  */
 #ifndef Py_IS_INFINITY
+#ifdef HAVE_ISINF
+#define Py_IS_INFINITY(X) isinf(X)
+#else
 #define Py_IS_INFINITY(X) ((X) && (X)*0.5 == (X))
 #endif
+#endif
 
 /* Py_IS_FINITE(X)
  * Return 1 if float or double arg is neither infinite nor NAN, else 0.
@@ -362,8 +381,12 @@ extern "C" {
  * macro for this particular test is useful
  */
 #ifndef Py_IS_FINITE
+#ifdef HAVE_ISFINITE
+#define Py_IS_FINITE(X) isfinite
+#else
 #define Py_IS_FINITE(X) (!Py_IS_INFINITY(X) && !Py_IS_NAN(X))
 #endif
+#endif
 
 /* HUGE_VAL is supposed to expand to a positive double infinity.  Python
  * uses Py_HUGE_VAL instead because some platforms are broken in this
@@ -376,6 +399,15 @@ extern "C" {
 #define Py_HUGE_VAL HUGE_VAL
 #endif
 
+/* Py_NAN
+ * A value that evaluates to a NaN. On IEEE 754 platforms INF*0 or
+ * INF/INF works. Define Py_NO_NAN in pyconfig.h if your platform
+ * doesn't support NaNs.
+ */
+#if !defined(Py_NAN) && !defined(Py_NO_NAN)
+#define Py_NAN (Py_HUGE_VAL * 0.)
+#endif
+
 /* Py_OVERFLOWED(X)
  * Return 1 iff a libm function overflowed.  Set errno to 0 before calling
  * a libm function, and invoke this macro after, passing the function
diff --git a/Include/pystrcmp.h b/Include/pystrcmp.h
new file mode 100644
index 0000000..edb1239
--- /dev/null
+++ b/Include/pystrcmp.h
@@ -0,0 +1,23 @@
+#ifndef Py_STRCMP_H
+#define Py_STRCMP_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_FUNC(int) PyOS_mystrnicmp(const char *, const char *, Py_ssize_t);
+PyAPI_FUNC(int) PyOS_mystricmp(const char *, const char *);
+
+#ifdef MS_WINDOWS
+#define PyOS_strnicmp strnicmp
+#define PyOS_stricmp stricmp
+#else
+#define PyOS_strnicmp PyOS_mystrnicmp
+#define PyOS_stricmp PyOS_mystricmp
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* !Py_STRCMP_H */