1 files changed, 25 insertions, 0 deletions
diff --git a/newlib/libm/common/sl_finite.c b/newlib/libm/common/sl_finite.c
new file mode 100644
index 000000000..0c27b4fae
--- /dev/null
+++ b/newlib/libm/common/sl_finite.c
@@ -0,0 +1,25 @@
+/* Copyright (C) 2015 by  Red Hat, Incorporated. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software
+ * is freely granted, provided that this notice is preserved.
+ */
+
+/* finitel(x) returns 1 is x is finite, else 0; */
+
+#include <math.h>
+
+int
+finitel (long double x)
+{
+#ifdef _LDBL_EQ_DBL
+  return finite (x);
+#else
+  /* Let the compiler do this for us.
+     Note - we do not know how many bits there are in a long double.
+     Some architectures for example have an 80-bit long double whereas
+     others use 128-bits.  We use macros and comiler builtin functions
+     to avoid specific knowledge of the long double format.  */
+  return __builtin_isinf_sign (x) == 0;
+#endif
+}
+