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	This function is equivalent to `$ERROR` (which is automatically included in test environments). Remove the harness file that defines the function, remove references to the file from test `includes` lists, and update scripts to instead invoke the `$ERROR` function.
		
			
				
	
	
		
			48 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			48 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
// Copyright 2009 the Sputnik authors.  All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: Cosine is a periodic function with period 2*PI
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es5id: 15.8.2.7_A6
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description: >
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    Checking if Math.cos(x) equals to Math.cos(x+n*2*Math.PI) with
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    precision 0.000000000003, where n is an integer from 1 to 100 and
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    x is one of 10 float point values from -Math.PI to +Math.PI
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---*/
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// CHECK#1
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var prec = 0.000000000003;
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//prec = 0.000000000000001;
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var period = 2*Math.PI;
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var pernum = 100;
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var a = -pernum * period;
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var b = pernum * period;
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var snum = 9;
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var step = period/snum + 0.0;
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var x = new Array();
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for (var i = 0; i < snum; i++)
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{
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	x[i] = a + i*step;
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}
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x[9] = a + period;
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var curval;
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var curx;
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var j;
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for (i = 0; i < snum; i++)
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{
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	curval = Math.cos(x[i]);
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	curx = x[i] + period;
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	j = 0;
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	while (curx <= b)
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	{
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		curx += period;
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		j++;
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		if (Math.abs(Math.cos(curx) - curval) >= prec)
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		{
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			$ERROR("#1: cos is found out to not be periodic:\n Math.abs(Math.cos(" + x[i] + ") - Math.cos(" + x[i] + " + 2*Math.PI*" + j + ")) >= " + prec + "\n Math.cos(" + x[i] + ") === " + curval + "\n Math.cos(" + curx + ") === " + Math.cos(curx));
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		}
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	}
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}
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