static int
sessionGetIntForProp (xmlNodePtr node,
char *prop)
{
xmlChar *temp;
int num;
temp = xmlGetProp (node, BAD_CAST prop);
if (temp)
{
num = xmlXPathCastStringToNumber (temp);
xmlFree (temp);
return num;
}
return -1;
}
/**
* exsltMathConstant
* @name: string
* @precision: number
*
* Implements the EXSLT - Math constant function:
* number math:constant(string, number)
*
* Returns a number value of the given constant with the given precision or
* xmlXPathNAN if name is unknown.
* The constants are PI, E, SQRRT2, LN2, LN10, LOG2E, and SQRT1_2
*/
static double
exsltMathConstant (xmlChar *name, double precision) {
xmlChar *str;
if ((name == NULL) || (xmlXPathIsNaN(precision)) || (precision < 1.0)) {
return xmlXPathNAN;
}
if (xmlStrEqual(name, BAD_CAST "PI")) {
int len = xmlStrlen(EXSLT_PI);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_PI, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else if (xmlStrEqual(name, BAD_CAST "E")) {
int len = xmlStrlen(EXSLT_E);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_E, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else if (xmlStrEqual(name, BAD_CAST "SQRRT2")) {
int len = xmlStrlen(EXSLT_SQRRT2);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_SQRRT2, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else if (xmlStrEqual(name, BAD_CAST "LN2")) {
int len = xmlStrlen(EXSLT_LN2);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_LN2, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else if (xmlStrEqual(name, BAD_CAST "LN10")) {
int len = xmlStrlen(EXSLT_LN10);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_LN10, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else if (xmlStrEqual(name, BAD_CAST "LOG2E")) {
int len = xmlStrlen(EXSLT_LOG2E);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_LOG2E, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else if (xmlStrEqual(name, BAD_CAST "SQRT1_2")) {
int len = xmlStrlen(EXSLT_SQRT1_2);
if (precision <= len)
len = (int)precision;
str = xmlStrsub(EXSLT_SQRT1_2, 0, len);
if (str == NULL)
return xmlXPathNAN;
return xmlXPathCastStringToNumber(str);
} else {
return xmlXPathNAN;
}
}
