forked from xuos/xiuos
72 lines
2.3 KiB
JavaScript
72 lines
2.3 KiB
JavaScript
// Copyright JS Foundation and other contributors, http://js.foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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var delta = 0.0001;
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var mod_m = 1.0 - delta;
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var mod_p = 1.0 + delta;
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assert (isNaN (Math.cos (NaN)));
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assert ((Math.cos (+0.0)) == 1.0);
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assert ((Math.cos (-0.0)) == 1.0);
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assert (isNaN (Math.cos (Infinity)));
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assert (isNaN (Math.cos (-Infinity)));
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assert (Math.cos (Math.PI) > -1.0 * mod_p);
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assert (Math.cos (Math.PI) < -1.0 * mod_m);
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assert (Math.cos (Math.PI / 2) > -delta);
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assert (Math.cos (Math.PI / 2) < +delta);
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assert (Math.cos (-Math.PI / 2) > -delta);
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assert (Math.cos (-Math.PI / 2) < +delta);
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assert (Math.cos (Math.PI / 4) > mod_m * Math.SQRT2 / 2);
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assert (Math.cos (Math.PI / 4) < mod_p * Math.SQRT2 / 2);
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assert (Math.cos (-Math.PI / 4) > mod_m * Math.SQRT2 / 2);
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assert (Math.cos (-Math.PI / 4) < mod_p * Math.SQRT2 / 2);
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assert (isNaN (Math.sin (NaN)));
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assert (1.0 / Math.sin (0.0) == Infinity);
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assert (1.0 / Math.sin (-0.0) == -Infinity);
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assert (isNaN (Math.sin (Infinity)));
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assert (isNaN (Math.sin (-Infinity)));
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assert (Math.sin (Math.PI) > -delta);
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assert (Math.sin (Math.PI) < +delta);
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assert (Math.sin (Math.PI / 2) > 1.0 * mod_m);
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assert (Math.sin (Math.PI / 2) < 1.0 * mod_p);
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assert (Math.sin (-Math.PI / 2) > -1.0 * mod_p);
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assert (Math.sin (-Math.PI / 2) < -1.0 * mod_m);
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assert (Math.sin (Math.PI / 4) > mod_m * Math.SQRT2 / 2);
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assert (Math.sin (Math.PI / 4) < mod_p * Math.SQRT2 / 2);
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assert (Math.sin (-Math.PI / 4) > -mod_p * Math.SQRT2 / 2);
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assert (Math.sin (-Math.PI / 4) < -mod_m * Math.SQRT2 / 2);
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var step = 0.01;
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for (var x = -2 * Math.PI; x <= 2 * Math.PI; x += step)
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{
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var s = Math.sin (x);
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var c = Math.cos (x);
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var sqr_s = s * s;
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var sqr_c = c * c;
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assert (sqr_s + sqr_c > mod_m);
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assert (sqr_s + sqr_c < mod_p);
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}
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