moving trunk for module inkscape

(bzr r1)

1 files changed, 57 insertions, 0 deletions

diff --git a/src/isnan.h b/src/isnan.h
new file mode 100644
index 000000000..cfae92fc7
--- /dev/null
+++ b/src/isnan.h
@@ -0,0 +1,57 @@
+#ifndef __ISNAN_H__
+#define __ISNAN_H__
+
+/*
+ * Temporary fix for various misdefinitions of isnan().
+ * isnan() is becoming undef'd in some .h files. 
+ * #include this last in your .cpp file to get it right.
+ *
+ * The problem is that isnan and isfinite are part of C99 but aren't part of
+ * the C++ standard (which predates C99).
+ *
+ * Authors:
+ *   Inkscape groupies and obsessive-compulsives
+ *
+ * Copyright (C) 2004 authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ *
+ * 2005 modification hereby placed in public domain.  Probably supercedes the 2004 copyright
+ * for the code itself.
+ */
+
+#include <math.h>
+/* You might try changing the above to <cmath> if you have problems.
+ * Whether you use math.h or cmath, you may need to edit the .cpp file
+ * and/or other .h files to use the same header file.
+ */
+
+#if defined(__isnan)
+# define isNaN(_a) (__isnan(_a))	/* MacOSX/Darwin definition < 10.4 */
+#elif defined(WIN32) || defined(_isnan)
+# define isNaN(_a) (_isnan(_a)) 	/* Win32 definition */
+#elif defined(isnan) || defined(__FreeBSD__)
+# define isNaN(_a) (isnan(_a))		/* GNU definition */
+#else
+# define isNaN(_a) (std::isnan(_a))
+#endif
+/* If the above doesn't work, then try (a != a).
+ * Also, please report a bug as per http://www.inkscape.org/report_bugs.php,
+ * giving information about what platform and compiler version you're using.
+ */
+
+
+#if defined(__isfinite)
+# define isFinite(_a) (__isfinite(_a))	/* MacOSX/Darwin definition < 10.4 */
+#elif defined(isfinite)
+# define isFinite(_a) (isfinite(_a))
+#else
+# define isFinite(_a) (std::isfinite(_a))
+#endif
+/* If the above doesn't work, then try (finite(_a) && !isNaN(_a)) or (!isNaN((_a) - (_a))).
+ * Also, please report a bug as per http://www.inkscape.org/report_bugs.php,
+ * giving information about what platform and compiler version you're using.
+ */
+
+
+#endif /* __ISNAN_H__ */