Totally rework the math library, this time based on the MacOs X

math library (which is itself based on the math lib from FreeBSD).
 -Erik

1 files changed, 69 insertions, 0 deletions

diff --git a/libm/w_j0.c b/libm/w_j0.c
new file mode 100644
index 000000000..6899e02f7
--- /dev/null
+++ b/libm/w_j0.c
@@ -0,0 +1,69 @@
+/* @(#)w_j0.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.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: w_j0.c,v 1.6 1995/05/10 20:49:11 jtc Exp $";
+#endif
+
+/*
+ * wrapper j0(double x), y0(double x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	double j0(double x)		/* wrapper j0 */
+#else
+	double j0(x)			/* wrapper j0 */
+	double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_j0(x);
+#else
+	double z = __ieee754_j0(x);
+	if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
+	if(fabs(x)>X_TLOSS) {
+	        return __kernel_standard(x,x,34); /* j0(|x|>X_TLOSS) */
+	} else
+	    return z;
+#endif
+}
+
+#ifdef __STDC__
+	double y0(double x)		/* wrapper y0 */
+#else
+	double y0(x)			/* wrapper y0 */
+	double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_y0(x);
+#else
+	double z;
+	z = __ieee754_y0(x);
+	if(_LIB_VERSION == _IEEE_ || isnan(x) ) return z;
+        if(x <= 0.0){
+                if(x==0.0)
+                    /* d= -one/(x-x); */
+                    return __kernel_standard(x,x,8);
+                else
+                    /* d = zero/(x-x); */
+                    return __kernel_standard(x,x,9);
+        }
+	if(x>X_TLOSS) {
+	        return __kernel_standard(x,x,35); /* y0(x>X_TLOSS) */
+	} else
+	    return z;
+#endif
+}