auto import from //depot/cupcake/@135843

1 files changed, 42 insertions, 0 deletions

diff --git a/w_atanh.c b/w_atanh.c
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index 0000000..436f5db
--- /dev/null
+++ b/w_atanh.c
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+
+/* @(#)w_atanh.c 1.3 95/01/18 */
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunSoft, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice 
+ * is preserved.
+ * ====================================================
+ */
+/* 
+ * wrapper atanh(x)
+ */
+
+#include "fdlibm.h"
+
+
+#ifdef __STDC__
+	double atanh(double x)		/* wrapper atanh */
+#else
+	double atanh(x)			/* wrapper atanh */
+	double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_atanh(x);
+#else
+	double z,y;
+	z = __ieee754_atanh(x);
+	if(_LIB_VERSION == _IEEE_ || ieee_isnan(x)) return z;
+	y = ieee_fabs(x);
+	if(y>=1.0) {
+	    if(y>1.0)
+	        return __kernel_standard(x,x,30); /* atanh(|x|>1) */
+	    else 
+	        return __kernel_standard(x,x,31); /* atanh(|x|==1) */
+	} else
+	    return z;
+#endif
+}