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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@606 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
29 lines
250 B
C
29 lines
250 B
C
#ifdef _MSC_VER
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#include <float.h>
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int
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isnan(n)
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double n;
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{
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return _isnan(n);
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}
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#else
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static int double_ne();
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int
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isnan(n)
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double n;
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{
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return double_ne(n, n);
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}
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static
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int
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double_ne(n1, n2)
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double n1, n2;
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{
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return n1 != n2;
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}
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#endif
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