Merged revisions 59541-59561 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
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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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diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 48d29d7..c876c74 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -114,7 +114,7 @@
PyObject *
PyFloat_FromString(PyObject *v)
{
- const char *s, *last, *end;
+ const char *s, *last, *end, *sp;
double x;
char buffer[256]; /* for errors */
char *s_buffer = NULL;
@@ -146,6 +146,7 @@
PyErr_SetString(PyExc_ValueError, "empty string for float()");
goto error;
}
+ sp = s;
/* We don't care about overflow or underflow. If the platform supports
* them, infinities and signed zeroes (on underflow) are fine.
* However, strtod can return 0 for denormalized numbers, where atof
@@ -161,7 +162,26 @@
byte at the end of the string, when the input is inf(inity). */
if (end > last)
end = last;
+ /* Check for inf and nan. This is done late because it rarely happens. */
if (end == s) {
+ char *p = (char*)sp;
+ int sign = 1;
+
+ if (*p == '-') {
+ sign = -1;
+ p++;
+ }
+ if (*p == '+') {
+ p++;
+ }
+ if (PyOS_strnicmp(p, "inf", 4) == 0) {
+ return PyFloat_FromDouble(sign * Py_HUGE_VAL);
+ }
+#ifdef Py_NAN
+ if(PyOS_strnicmp(p, "nan", 4) == 0) {
+ return PyFloat_FromDouble(Py_NAN);
+ }
+#endif
PyOS_snprintf(buffer, sizeof(buffer),
"invalid literal for float(): %.200s", s);
PyErr_SetString(PyExc_ValueError, buffer);
@@ -250,7 +270,9 @@
{
register char *cp;
char format[32];
- /* Subroutine for float_repr, float_str, and others.
+ int i;
+
+ /* Subroutine for float_repr, float_str and float_print.
We want float numbers to be recognizable as such,
i.e., they should contain a decimal point or an exponent.
However, %g may print the number as an integer;
@@ -271,7 +293,33 @@
*cp++ = '.';
*cp++ = '0';
*cp++ = '\0';
+ return;
}
+ /* Checking the next three chars should be more than enough to
+ * detect inf or nan, even on Windows. We check for inf or nan
+ * at last because they are rare cases.
+ */
+ for (i=0; *cp != '\0' && i<3; cp++, i++) {
+ if (isdigit(Py_CHARMASK(*cp)) || *cp == '.')
+ continue;
+ /* found something that is neither a digit nor point
+ * it might be a NaN or INF
+ */
+#ifdef Py_NAN
+ if (Py_IS_NAN(ob_fval)) {
+ strcpy(buf, "nan");
+ }
+ else
+#endif
+ if (Py_IS_INFINITY(ob_fval)) {
+ cp = buf;
+ if (*cp == '-')
+ cp++;
+ strcpy(cp, "inf");
+ }
+ break;
+ }
+
}
static void