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629325 XPath rounding errors first cleanup

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https://bugzilla.gnome.org/show_bug.cgi?id=629325
not a full solution as Vincent Lefevre pointed out but
an incremental improvement over the status-quo
This commit is contained in:
Phil Shafer 2010-11-03 20:53:55 +01:00 committed by Daniel Veillard
parent ad4f0a2dc8
commit ee32ad3c0f
1 changed files with 11 additions and 3 deletions
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14
xpath.c
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@ -10080,15 +10080,23 @@ xmlXPathCompNumber(xmlXPathParserContextPtr ctxt)
}
#endif
if (CUR == '.') {
int v, frac = 0;
double fraction = 0;
NEXT;
if (((CUR < '0') || (CUR > '9')) && (!ok)) {
XP_ERROR(XPATH_NUMBER_ERROR);
}
while ((CUR >= '0') && (CUR <= '9')) {
mult /= 10;
ret = ret + (CUR - '0') * mult;
while ((CUR >= '0') && (CUR <= '9') && (frac < MAX_FRAC)) {
v = (CUR - '0');
fraction = fraction * 10 + v;
frac = frac + 1;
NEXT;
}
fraction /= my_pow10[frac];
ret = ret + fraction;
while ((CUR >= '0') && (CUR <= '9'))
NEXT;
}
if ((CUR == 'e') || (CUR == 'E')) {
NEXT;