1 files changed, 32 insertions, 0 deletions
diff --git a/StdLib/LibC/Math/s_finite.c b/StdLib/LibC/Math/s_finite.c
new file mode 100644
index 0000000000..3f66feb981
--- /dev/null
+++ b/StdLib/LibC/Math/s_finite.c
@@ -0,0 +1,32 @@
+/* @(#)s_finite.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+#include  <LibConfig.h>
+#include  <sys/EfiCdefs.h>
+#if defined(LIBM_SCCS) && !defined(lint)
+__RCSID("$NetBSD: s_finite.c,v 1.11 2002/05/26 22:01:55 wiz Exp $");
+#endif
+
+/*
+ * finite(x) returns 1 is x is finite, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+int
+finite(double x)
+{
+  int32_t hx;
+  GET_HIGH_WORD(hx,x);
+  return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
+}