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Added float Json::Value::asFloat() to obtain a floating point value as a float (avoid lost of precision warning caused by used of asDouble() to initialize a float).

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This commit is contained in:
Baptiste Lepilleur
2010-12-24 19:30:06 +00:00
parent fa130ef871
commit b96aed0f3e
4 changed files with 42 additions and 0 deletions
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29
src/lib_json/json_value.cpp
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@@ -772,6 +772,35 @@ Value::asDouble() const
return 0; // unreachable;
}
float
Value::asFloat() const
{
switch ( type_ )
{
case nullValue:
return 0.0f;
case intValue:
return static_cast<float>( value_.int_ );
case uintValue:
#if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
return static_cast<float>( value_.uint_ );
#else // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
return static_cast<float>( Int(value_.uint_/2) ) * 2 + Int(value_.uint_ & 1);
#endif // if !defined(JSON_USE_INT64_DOUBLE_CONVERSION)
case realValue:
return static_cast<float>( value_.real_ );
case booleanValue:
return value_.bool_ ? 1.0f : 0.0f;
case stringValue:
case arrayValue:
case objectValue:
JSON_ASSERT_MESSAGE( false, "Type is not convertible to float" );
default:
JSON_ASSERT_UNREACHABLE;
}
return 0.0f; // unreachable;
}
bool
Value::asBool() const
{