Import Upstream version 2.72.4

glib/gnulib/isinf.c

@@ -0,0 +1,30 @@
+#ifndef _MSC_VER
+#error "This implementation is currently supported for Visual Studio only!"
+#endif
+
+#include "config.h"
+#include <gnulib_math.h>
+#include <float.h>
+#include <math.h>
+
+int
+gl_isinff (float x)
+{
+#if defined (_WIN64) && (defined (_M_X64) || defined (_M_AMD64))
+  return !_finitef (x);
+#else
+  return !_finite (x);
+#endif
+}
+
+int
+gl_isinfd (double x)
+{
+  return !_finite (x);
+}
+
+int
+gl_isinfl (long double x)
+{
+  return gl_isinfd (x);
+}