about summary refs log tree commit diff
path: root/math/w_hypot_compat.c
diff options
context:
space:
mode:
Diffstat (limited to 'math/w_hypot_compat.c')
-rw-r--r--math/w_hypot_compat.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/math/w_hypot_compat.c b/math/w_hypot_compat.c
new file mode 100644
index 0000000000..7c662c8e40
--- /dev/null
+++ b/math/w_hypot_compat.c
@@ -0,0 +1,35 @@
+/* @(#)w_hypot.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.
+ * ====================================================
+ */
+
+/*
+ * wrapper hypot(x,y)
+ */
+
+#include <math.h>
+#include <math_private.h>
+
+
+double
+__hypot (double x, double y)
+{
+	double z = __ieee754_hypot(x,y);
+	if(__builtin_expect(!isfinite(z), 0)
+	   && isfinite(x) && isfinite(y) && _LIB_VERSION != _IEEE_)
+	    return __kernel_standard(x, y, 4); /* hypot overflow */
+
+	return z;
+}
+weak_alias (__hypot, hypot)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__hypot, __hypotl)
+weak_alias (__hypot, hypotl)
+#endif