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29 lines
649 B
Diff
Executable File
29 lines
649 B
Diff
Executable File
diff --git "a/lib/csa/nan.h" "b/lib/csa/nan.h"
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index 29fd3d2f..7f16e8c8 100644
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--- "a/lib/csa/nan.h"
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+++ "b/lib/csa/nan.h"
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@@ -19,6 +19,16 @@
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#if !defined ( _NAN_H )
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#define _NAN_H
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+// Try to use the implementation-provided NAN constant:
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+
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+#include <math.h>
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+
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+#if defined(NAN)
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+
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+#define NaN ((double)NAN)
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+
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+#else // ^^^ implementation provides NAN // implementation does not provide NAN vvv
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+
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#if ( defined ( __GNUC__ ) && !defined ( __ICC ) ) || defined ( __BORLANDC__ )
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static const double NaN = 0.0 / 0.0;
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@@ -63,4 +73,6 @@ static const long long lNaN = ( (unsigned long long) 1 << 63 ) - 1;
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#endif
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+#endif // defined(NAN)
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+
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#endif
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