From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 22 Dec 2004 20:10:10 +0000
Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

---
 sysdeps/generic/w_log2.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 sysdeps/generic/w_log2.c

(limited to 'sysdeps/generic/w_log2.c')

diff --git a/sysdeps/generic/w_log2.c b/sysdeps/generic/w_log2.c
new file mode 100644
index 0000000000..7966ff359f
--- /dev/null
+++ b/sysdeps/generic/w_log2.c
@@ -0,0 +1,32 @@
+/*
+ * wrapper log2(X)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+double
+__log2 (double x)	/* wrapper log2 */
+{
+#ifdef _IEEE_LIBM
+  return __ieee754_log2 (x);
+#else
+  double z;
+  z = __ieee754_log2 (x);
+  if (_LIB_VERSION == _IEEE_ || __isnan (x)) return z;
+  if (x <= 0.0)
+    {
+      if (x == 0.0)
+	return __kernel_standard (x, x, 48); /* log2 (0) */
+      else
+	return __kernel_standard (x, x, 49); /* log2 (x < 0) */
+    }
+  else
+    return z;
+#endif
+}
+weak_alias (__log2, log2)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__log2, __log2l)
+weak_alias (__log2, log2l)
+#endif
-- 
cgit v1.2.1