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use fpclassify to test a float number is zero or nan

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cmlchen 2019-06-21 09:40:33 +08:00 committed by Jordan Bayles
parent 5510f14a71
commit b7feb2d493
1 changed files with 2 additions and 2 deletions
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4
src/lib_json/json_value.cpp
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@ -853,8 +853,8 @@ bool Value::asBool() const {
case uintValue: case uintValue:
return value_.uint_ ? true : false; return value_.uint_ ? true : false;
case realValue: case realValue:
// This is kind of strange. Not recommended. // According to JavaScript language zero or NaN is regarded as false
return (value_.real_ != 0.0) ? true : false; return std::fpclassify(value_.real_) != FP_ZERO && std::fpclassify(value_.real_) != FP_NAN
default: default:
break; break;
} }