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/*
* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
namespace mongo {
inline bool isNaN(double d) {
return d != d;
}
inline bool isInf(double d, int* sign = 0) {
volatile double tmp = d;
if ((tmp == d) && ((tmp - d) != 0.0)) {
if ( sign ) {
*sign = (d < 0.0 ? -1 : 1);
}
return true;
}
if ( sign ) {
*sign = 0;
}
return false;
}
}
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