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preventing more nan's by replacing func(a) -> func(|a|) for func: sqrt(), ln(), log()

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This commit is contained in:
nemu 2010-03-09 10:13:24 +00:00
parent 78d0469993
commit 901f12b5c5
1 changed files with 3 additions and 3 deletions
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6
src/classes/PFunction.cpp
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@ -458,13 +458,13 @@ Double_t PFunction::EvalNode(PFuncTreeNode &node)
} else if (node.fFunctionTag == FUN_ATANH) {
return atanh(EvalNode(node.children[0]));
} else if (node.fFunctionTag == FUN_LOG) {
return log(EvalNode(node.children[0]))/log(10.0);
return log(fabs(EvalNode(node.children[0])))/log(10.0);
} else if (node.fFunctionTag == FUN_LN) {
return log(EvalNode(node.children[0]));
return log(fabs(EvalNode(node.children[0])));
} else if (node.fFunctionTag == FUN_EXP) {
return exp(EvalNode(node.children[0]));
} else if (node.fFunctionTag == FUN_SQRT) {
return sqrt(EvalNode(node.children[0]));
return sqrt(fabs(EvalNode(node.children[0])));
} else {
cerr << endl << "**PANIC ERROR**: PFunction::EvalNode: node.fID == PFunctionGrammar::functionID: you never should have reached this point!";
cerr << endl;