1 files changed, 40 insertions, 0 deletions
diff --git a/StdLib/LibC/Math/w_log.c b/StdLib/LibC/Math/w_log.c
new file mode 100644
index 0000000000..ae8a5a2338
--- /dev/null
+++ b/StdLib/LibC/Math/w_log.c
@@ -0,0 +1,40 @@
+/* @(#)w_log.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: w_log.c,v 1.9 2002/05/26 22:02:02 wiz Exp $");
+#endif
+
+/*
+ * wrapper log(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+
+double
+log(double x)   /* wrapper log */
+{
+#ifdef _IEEE_LIBM
+  return __ieee754_log(x);
+#else
+  double z;
+  z = __ieee754_log(x);
+  if(_LIB_VERSION == _IEEE_ || isnan(x) || x > 0.0) return z;
+  if(x==0.0)
+      return __kernel_standard(x,x,16); /* log(0) */
+  else
+      return __kernel_standard(x,x,17); /* log(x<0) */
+#endif
+}