1// Copyright JS Foundation and other contributors, http://js.foundation 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15var nan = NaN; 16var p_zero = 0.0; 17var m_zero = -p_zero; 18 19assert (isNaN(Math['sign'](NaN))); 20assert (Math['sign'](p_zero) === p_zero); 21assert (Math['sign'](m_zero) === m_zero); 22assert (Math['sign'](-5) === -1); 23assert (Math['sign'](5) === 1); 24