2.5-18.1

1 files changed, 53 insertions, 0 deletions

diff --git a/math/w_atanhf.c b/math/w_atanhf.c
new file mode 100644
index 0000000000..52a144c05a
--- /dev/null
+++ b/math/w_atanhf.c
@@ -0,0 +1,53 @@
+/* w_atanhf.c -- float version of w_atanh.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: w_atanhf.c,v 1.3 1995/05/10 20:48:45 jtc Exp $";
+#endif
+
+/* 
+ * wrapper atanhf(x)
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+
+#ifdef __STDC__
+	float __atanhf(float x)		/* wrapper atanhf */
+#else
+	float __atanhf(x)			/* wrapper atanhf */
+	float x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_atanhf(x);
+#else
+	float z,y;
+	z = __ieee754_atanhf(x);
+	if(_LIB_VERSION == _IEEE_ || __isnanf(x)) return z;
+	y = fabsf(x);
+	if(y>=(float)1.0) {
+	    if(y>(float)1.0)
+	        /* atanhf(|x|>1) */
+	        return (float)__kernel_standard((double)x,(double)x,130);
+	    else 
+	        /* atanhf(|x|==1) */
+	        return (float)__kernel_standard((double)x,(double)x,131);
+	} else
+	    return z;
+#endif
+}
+weak_alias (__atanhf, atanhf)