upload sdk

git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/newlib/math/sf_isinff.c

@@ -0,0 +1,27 @@
+/*
+ * __isinff(x) returns 1 if x is +-infinity, else 0;
+ * Added by Cygnus Support.
+ */
+
+#include "fdlibm.h"
+
+int
+_DEFUN (__isinff, (x),
+	float x)
+{
+	__int32_t ix;
+	GET_FLOAT_WORD(ix,x);
+	ix &= 0x7fffffff;
+	return FLT_UWORD_IS_INFINITE(ix);
+}
+
+#ifdef _DOUBLE_IS_32BITS
+
+int
+_DEFUN (__isinfd, (x),
+	double x)
+{
+	return __isinff((float) x);
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */