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			17 lines
		
	
	
	
		
			234 B
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
	
		
			234 B
		
	
	
	
		
			C
		
	
	
	
	
	
| /* public domain rewrite of isnan(3) */
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| 
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| #include "ruby/missing.h"
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| 
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| static int double_ne(double n1, double n2);
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| 
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| int
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| isnan(double n)
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| {
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|     return double_ne(n, n);
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| }
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| 
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| static int
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| double_ne(double n1, double n2)
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| {
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|     return n1 != n2;
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| }
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