| public org.apache.poi.hssf.record.formula.eval.Eval | evaluate(org.apache.poi.hssf.record.formula.eval.Eval[] operands, int srcRow, short srcCol)
double d = 0;
ValueEval retval = null;
switch (operands.length) {
default:
retval = ErrorEval.VALUE_INVALID;
break;
case 1:
ValueEval ve = singleOperandEvaluate(operands[0], srcRow, srcCol);
if (ve instanceof NumericValueEval) {
NumericValueEval ne = (NumericValueEval) ve;
d = ne.getNumberValue();
}
else if (ve instanceof BlankEval) {
// do nothing
}
else {
retval = ErrorEval.NUM_ERROR;
}
}
if (retval == null) {
if (!Double.isNaN(d) && !Double.isInfinite(d)) {
d = (d==0)
? 0
: (((long) (d/2))*2 == d)
? d
: (d < 0)
? ((((long) (d/2))<<1)-2)
: ((((long) (d/2))<<1)+2);
}
retval = (Double.isNaN(d) || Double.isInfinite(d)) ? (ValueEval) ErrorEval.VALUE_INVALID : new NumberEval(d);
}
return retval;
|
