1 files changed, 81 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/doasin.c b/sysdeps/ieee754/dbl-64/doasin.c
new file mode 100644
index 0000000000..4ea108b9d7
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/doasin.c
@@ -0,0 +1,81 @@
+
+/*
+ * IBM Accurate Mathematical Library
+ * Copyright (c) International Business Machines Corp., 2001
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or 
+ * (at your option) any later version.
+ * 
+ * This program 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 Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  
+ */
+/**********************************************************************/
+/* MODULE_NAME: doasin.c                                              */
+/*                                                                    */
+/* FUNCTION: doasin                                                   */ 
+/*                                                                    */
+/* FILES NEEDED:endian.h mydefs.h dla.h doasin.h                      */
+/*              mpa.c                                                 */
+/*                                                                    */
+/* Compute arcsin(x,dx,v) of double-length number (x+dx) the result   */
+/* stored in v where v= v[0]+v[1] =arcsin(x+dx)                       */
+/**********************************************************************/
+
+#include "endian.h"
+#include "mydefs.h"
+#include "dla.h" 
+
+/********************************************************************/
+/* Compute arcsin(x,dx,v) of double-length number (x+dx) the result */
+/* stored in v where v= v[0]+v[1] =arcsin(x+dx)                     */
+/********************************************************************/
+void doasin(double x, double dx, double v[]) {
+  
+#include "doasin.h"
+
+  static const double   
+    d5 =  0.22372159090911789889975459505194491E-01,
+    d6 =  0.17352764422456822913014975683014622E-01,
+    d7 =  0.13964843843786693521653681033981614E-01,
+    d8 =  0.11551791438485242609036067259086589E-01,
+    d9 =  0.97622386568166960207425666787248914E-02,
+    d10 = 0.83638737193775788576092749009744976E-02,
+    d11 = 0.79470250400727425881446981833568758E-02;
+  
+  double xx,p,pp,u,uu,r,s;
+  double hx,tx,hy,ty,tp,tq,tc,tcc;
+  
+
+/* Taylor series for arcsin for Double-Length numbers         */
+  xx = x*x+2.0*x*dx;
+  p = ((((((d11*xx+d10)*xx+d9)*xx+d8)*xx+d7)*xx+d6)*xx+d5)*xx;
+  pp = 0;
+
+  MUL2(x,dx,x,dx,u,uu,tp,hx,tx,hy,ty,tq,tc,tcc);
+  ADD2(p,pp,c4.x,cc4.x,p,pp,r,s);
+  MUL2(p,pp,u,uu,p,pp,tp,hx,tx,hy,ty,tq,tc,tcc);
+  ADD2(p,pp,c3.x,cc3.x,p,pp,r,s);
+  MUL2(p,pp,u,uu,p,pp,tp,hx,tx,hy,ty,tq,tc,tcc);
+  ADD2(p,pp,c2.x,cc2.x,p,pp,r,s);
+  MUL2(p,pp,u,uu,p,pp,tp,hx,tx,hy,ty,tq,tc,tcc);
+  ADD2(p,pp,c1.x,cc1.x,p,pp,r,s);
+  MUL2(p,pp,u,uu,p,pp,tp,hx,tx,hy,ty,tq,tc,tcc);
+  MUL2(p,pp,x,dx,p,pp,tp,hx,tx,hy,ty,tq,tc,tcc);
+  ADD2(p,pp,x,dx,p,pp,r,s);
+  v[0]=p;
+  v[1]=pp; /* arcsin(x+dx)=v[0]+v[1] */
+}
+
+
+
+
+
+