--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Python/mystrtoul.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,285 @@
+
+#include "Python.h"
+
+#if defined(__sgi) && defined(WITH_THREAD) && !defined(_SGI_MP_SOURCE)
+#define _SGI_MP_SOURCE
+#endif
+
+/* strtol and strtoul, renamed to avoid conflicts */
+
+
+#include <ctype.h>
+#ifdef HAVE_ERRNO_H
+#include <errno.h>
+#endif
+
+/* Static overflow check values for bases 2 through 36.
+ * smallmax[base] is the largest unsigned long i such that
+ * i * base doesn't overflow unsigned long.
+ */
+static unsigned long smallmax[] = {
+ 0, /* bases 0 and 1 are invalid */
+ 0,
+ ULONG_MAX / 2,
+ ULONG_MAX / 3,
+ ULONG_MAX / 4,
+ ULONG_MAX / 5,
+ ULONG_MAX / 6,
+ ULONG_MAX / 7,
+ ULONG_MAX / 8,
+ ULONG_MAX / 9,
+ ULONG_MAX / 10,
+ ULONG_MAX / 11,
+ ULONG_MAX / 12,
+ ULONG_MAX / 13,
+ ULONG_MAX / 14,
+ ULONG_MAX / 15,
+ ULONG_MAX / 16,
+ ULONG_MAX / 17,
+ ULONG_MAX / 18,
+ ULONG_MAX / 19,
+ ULONG_MAX / 20,
+ ULONG_MAX / 21,
+ ULONG_MAX / 22,
+ ULONG_MAX / 23,
+ ULONG_MAX / 24,
+ ULONG_MAX / 25,
+ ULONG_MAX / 26,
+ ULONG_MAX / 27,
+ ULONG_MAX / 28,
+ ULONG_MAX / 29,
+ ULONG_MAX / 30,
+ ULONG_MAX / 31,
+ ULONG_MAX / 32,
+ ULONG_MAX / 33,
+ ULONG_MAX / 34,
+ ULONG_MAX / 35,
+ ULONG_MAX / 36,
+};
+
+/* maximum digits that can't ever overflow for bases 2 through 36,
+ * calculated by [int(math.floor(math.log(2**32, i))) for i in range(2, 37)].
+ * Note that this is pessimistic if sizeof(long) > 4.
+ */
+#if SIZEOF_LONG == 4
+static int digitlimit[] = {
+ 0, 0, 32, 20, 16, 13, 12, 11, 10, 10, /* 0 - 9 */
+ 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, /* 10 - 19 */
+ 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, /* 20 - 29 */
+ 6, 6, 6, 6, 6, 6, 6}; /* 30 - 36 */
+#elif SIZEOF_LONG == 8
+/* [int(math.floor(math.log(2**64, i))) for i in range(2, 37)] */
+static int digitlimit[] = {
+ 0, 0, 64, 40, 32, 27, 24, 22, 21, 20, /* 0 - 9 */
+ 19, 18, 17, 17, 16, 16, 16, 15, 15, 15, /* 10 - 19 */
+ 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, /* 20 - 29 */
+ 13, 12, 12, 12, 12, 12, 12}; /* 30 - 36 */
+#else
+#error "Need table for SIZEOF_LONG"
+#endif
+
+/*
+** strtoul
+** This is a general purpose routine for converting
+** an ascii string to an integer in an arbitrary base.
+** Leading white space is ignored. If 'base' is zero
+** it looks for a leading 0, 0b, 0B, 0o, 0O, 0x or 0X
+** to tell which base. If these are absent it defaults
+** to 10. Base must be 0 or between 2 and 36 (inclusive).
+** If 'ptr' is non-NULL it will contain a pointer to
+** the end of the scan.
+** Errors due to bad pointers will probably result in
+** exceptions - we don't check for them.
+*/
+unsigned long
+PyOS_strtoul(register char *str, char **ptr, int base)
+{
+ register unsigned long result = 0; /* return value of the function */
+ register int c; /* current input character */
+ register int ovlimit; /* required digits to overflow */
+
+ /* skip leading white space */
+ while (*str && isspace(Py_CHARMASK(*str)))
+ ++str;
+
+ /* check for leading 0 or 0x for auto-base or base 16 */
+ switch (base) {
+ case 0: /* look for leading 0, 0b, 0o or 0x */
+ if (*str == '0') {
+ ++str;
+ if (*str == 'x' || *str == 'X') {
+ /* there must be at least one digit after 0x */
+ if (_PyLong_DigitValue[Py_CHARMASK(str[1])] >= 16) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+ ++str;
+ base = 16;
+ } else if (*str == 'o' || *str == 'O') {
+ /* there must be at least one digit after 0o */
+ if (_PyLong_DigitValue[Py_CHARMASK(str[1])] >= 8) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+ ++str;
+ base = 8;
+ } else if (*str == 'b' || *str == 'B') {
+ /* there must be at least one digit after 0b */
+ if (_PyLong_DigitValue[Py_CHARMASK(str[1])] >= 2) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+ ++str;
+ base = 2;
+ } else {
+ base = 8;
+ }
+ }
+ else
+ base = 10;
+ break;
+
+ case 2: /* skip leading 0b or 0B */
+ if (*str == '0') {
+ ++str;
+ if (*str == 'b' || *str == 'B') {
+ /* there must be at least one digit after 0b */
+ if (_PyLong_DigitValue[Py_CHARMASK(str[1])] >= 2) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+ ++str;
+ }
+ }
+ break;
+
+ case 8: /* skip leading 0o or 0O */
+ if (*str == '0') {
+ ++str;
+ if (*str == 'o' || *str == 'O') {
+ /* there must be at least one digit after 0o */
+ if (_PyLong_DigitValue[Py_CHARMASK(str[1])] >= 8) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+ ++str;
+ }
+ }
+ break;
+
+ case 16: /* skip leading 0x or 0X */
+ if (*str == '0') {
+ ++str;
+ if (*str == 'x' || *str == 'X') {
+ /* there must be at least one digit after 0x */
+ if (_PyLong_DigitValue[Py_CHARMASK(str[1])] >= 16) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+ ++str;
+ }
+ }
+ break;
+ }
+
+ /* catch silly bases */
+ if (base < 2 || base > 36) {
+ if (ptr)
+ *ptr = str;
+ return 0;
+ }
+
+ /* skip leading zeroes */
+ while (*str == '0')
+ ++str;
+
+ /* base is guaranteed to be in [2, 36] at this point */
+ ovlimit = digitlimit[base];
+
+ /* do the conversion until non-digit character encountered */
+ while ((c = _PyLong_DigitValue[Py_CHARMASK(*str)]) < base) {
+ if (ovlimit > 0) /* no overflow check required */
+ result = result * base + c;
+ else { /* requires overflow check */
+ register unsigned long temp_result;
+
+ if (ovlimit < 0) /* guaranteed overflow */
+ goto overflowed;
+
+ /* there could be an overflow */
+ /* check overflow just from shifting */
+ if (result > smallmax[base])
+ goto overflowed;
+
+ result *= base;
+
+ /* check overflow from the digit's value */
+ temp_result = result + c;
+ if (temp_result < result)
+ goto overflowed;
+
+ result = temp_result;
+ }
+
+ ++str;
+ --ovlimit;
+ }
+
+ /* set pointer to point to the last character scanned */
+ if (ptr)
+ *ptr = str;
+
+ return result;
+
+overflowed:
+ if (ptr) {
+ /* spool through remaining digit characters */
+ while (_PyLong_DigitValue[Py_CHARMASK(*str)] < base)
+ ++str;
+ *ptr = str;
+ }
+ errno = ERANGE;
+ return (unsigned long)-1;
+}
+
+/* Checking for overflow in PyOS_strtol is a PITA; see comments
+ * about PY_ABS_LONG_MIN in longobject.c.
+ */
+#define PY_ABS_LONG_MIN (0-(unsigned long)LONG_MIN)
+
+long
+PyOS_strtol(char *str, char **ptr, int base)
+{
+ long result;
+ unsigned long uresult;
+ char sign;
+
+ while (*str && isspace(Py_CHARMASK(*str)))
+ str++;
+
+ sign = *str;
+ if (sign == '+' || sign == '-')
+ str++;
+
+ uresult = PyOS_strtoul(str, ptr, base);
+
+ if (uresult <= (unsigned long)LONG_MAX) {
+ result = (long)uresult;
+ if (sign == '-')
+ result = -result;
+ }
+ else if (sign == '-' && uresult == PY_ABS_LONG_MIN) {
+ result = LONG_MIN;
+ }
+ else {
+ errno = ERANGE;
+ result = LONG_MAX;
+ }
+ return result;
+}