diff packages/language/c/libm/current/src/float/ieee754-api/wf_j1.c @ 3260:77f9d3253c3e

Add: Complex number header and library (single and double precision floating point), port from Newlib. Add: Single precision floating point library, port from Newlib. [ Bugzilla 1001539 ]
author vae
date Sun, 25 Aug 2013 14:38:57 +0000
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+++ b/packages/language/c/libm/current/src/float/ieee754-api/wf_j1.c
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+//===========================================================================
+//
+//      wf_j1.c
+//
+//      Part of the standard mathematical function library
+//
+//===========================================================================
+// ####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 2012 Free Software Foundation, Inc.
+//
+// eCos is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 2 or (at your option) any later
+// version.
+//
+// eCos is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with eCos; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+//
+// As a special exception, if other files instantiate templates or use
+// macros or inline functions from this file, or you compile this file
+// and link it with other works to produce a work based on this file,
+// this file does not by itself cause the resulting work to be covered by
+// the GNU General Public License. However the source code for this file
+// must still be made available in accordance with section (3) of the GNU
+// General Public License v2.
+//
+// This exception does not invalidate any other reasons why a work based
+// on this file might be covered by the GNU General Public License.
+// -------------------------------------------
+// ####ECOSGPLCOPYRIGHTEND####
+//===========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):
+// Contributors: visar, ilijak
+// Date:        2012-03-08
+// Purpose:
+// Description:
+// Usage:
+//
+//####DESCRIPTIONEND####
+//
+//===========================================================================
+
+// CONFIGURATION
+
+#include <pkgconf/libm.h>   // Configuration header
+
+// Include the Math library?
+#ifdef CYGPKG_LIBM
+
+// Derived from code with the following copyright
+
+
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+/*
+ * wrapper of j1f,y1f
+ */
+
+#include "mathincl/fdlibm.h"
+
+#ifdef __STDC__
+	float j1f(float x)		/* wrapper j1f */
+#else
+	float j1f(x)			/* wrapper j1f */
+	float x;
+#endif
+{
+#ifdef CYGSEM_LIBM_COMPAT_IEEE_ONLY
+	return __ieee754_j1f(x);
+#else
+    float z;
+    z = __ieee754_j1f(x);
+    if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_IEEE || isnanf(x) ) return z;
+    if(fabs(x)>X_TLOSS) {
+        return __kernel_standard(x,x,36); /* j1(|x|>X_TLOSS) */
+    } else
+        return z;
+#endif
+}
+
+#ifdef __STDC__
+	float y1f(float x)		/* wrapper y1f */
+#else
+	float y1f(x)			/* wrapper y1f */
+	float x;
+#endif
+{
+#ifdef CYGSEM_LIBM_COMPAT_IEEE_ONLY
+	return __ieee754_y1f(x);
+#else
+    float z;
+    z = __ieee754_y1f(x);
+    if(cyg_libm_get_compat_mode() == CYGNUM_LIBM_COMPAT_IEEE || isnanf(x) ) return z;
+    if(x <= 0.0){
+        if(x==0.0)
+            /* d= -one/(x-x); */
+            return __kernel_standard(x,x,10);
+        else
+            /* d = zero/(x-x); */
+            return __kernel_standard(x,x,11);
+    }
+    if(x>X_TLOSS) {
+        return __kernel_standard(x,x,37); /* y1(x>X_TLOSS) */
+    } else
+        return z;
+#endif
+}
+
+#endif // ifdef CYGPKG_LIBM
+
+// EOF wf_j1.c