Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 223 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/ieee754/dbl-64/dosincos.c b/REORG.TODO/sysdeps/ieee754/dbl-64/dosincos.c
new file mode 100644
index 0000000000..372872b42b
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/dbl-64/dosincos.c
@@ -0,0 +1,223 @@
+/*
+ * IBM Accurate Mathematical Library
+ * written by International Business Machines Corp.
+ * Copyright (C) 2001-2017 Free Software Foundation, Inc.
+ *
+ * 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 2.1 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 Lesser 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, see <http://www.gnu.org/licenses/>.
+ */
+/********************************************************************/
+/*                                                                  */
+/* MODULE_NAME: dosincos.c                                          */
+/*                                                                  */
+/*                                                                  */
+/* FUNCTIONS:   dubsin                                              */
+/*              dubcos                                              */
+/*              docos                                               */
+/* FILES NEEDED: endian.h mydefs.h dla.h dosincos.h                 */
+/*               sincos.tbl                                         */
+/*                                                                  */
+/* Routines compute sin() and cos() as Double-Length numbers         */
+/********************************************************************/
+
+
+
+#include "endian.h"
+#include "mydefs.h"
+#include <dla.h>
+#include "dosincos.h"
+#include <math_private.h>
+
+#ifndef SECTION
+# define SECTION
+#endif
+
+extern const union
+{
+  int4 i[880];
+  double x[440];
+} __sincostab attribute_hidden;
+
+/***********************************************************************/
+/* Routine receive Double-Length number (x+dx) and computing sin(x+dx) */
+/* as Double-Length number and store it at array v .It computes it by  */
+/* arithmetic action on Double-Length numbers                          */
+/*(x+dx) between 0 and PI/4                                            */
+/***********************************************************************/
+
+void
+SECTION
+__dubsin (double x, double dx, double v[])
+{
+  double r, s, c, cc, d, dd, d2, dd2, e, ee,
+	 sn, ssn, cs, ccs, ds, dss, dc, dcc;
+#ifndef DLA_FMS
+  double p, hx, tx, hy, ty, q;
+#endif
+  mynumber u;
+  int4 k;
+
+  u.x = x + big.x;
+  k = u.i[LOW_HALF] << 2;
+  x = x - (u.x - big.x);
+  d = x + dx;
+  dd = (x - d) + dx;
+  /* sin(x+dx)=sin(Xi+t)=sin(Xi)*cos(t) + cos(Xi)sin(t) where t ->0 */
+  MUL2 (d, dd, d, dd, d2, dd2, p, hx, tx, hy, ty, q, c, cc);
+  sn = __sincostab.x[k];       /*                                  */
+  ssn = __sincostab.x[k + 1];  /*      sin(Xi) and cos(Xi)         */
+  cs = __sincostab.x[k + 2];   /*                                  */
+  ccs = __sincostab.x[k + 3];  /*                                  */
+  /* Taylor series for sin ds=sin(t) */
+  MUL2 (d2, dd2, s7.x, ss7.x, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, s5.x, ss5.x, ds, dss, r, s);
+  MUL2 (d2, dd2, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, s3.x, ss3.x, ds, dss, r, s);
+  MUL2 (d2, dd2, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (d, dd, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, d, dd, ds, dss, r, s);
+
+  /* Taylor series for cos dc=cos(t) */
+  MUL2 (d2, dd2, c8.x, cc8.x, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c6.x, cc6.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c4.x, cc4.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c2.x, cc2.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+
+  MUL2 (cs, ccs, ds, dss, e, ee, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (dc, dcc, sn, ssn, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  SUB2 (e, ee, dc, dcc, e, ee, r, s);
+  ADD2 (e, ee, sn, ssn, e, ee, r, s);                    /* e+ee=sin(x+dx) */
+
+  v[0] = e;
+  v[1] = ee;
+}
+/**********************************************************************/
+/* Routine receive Double-Length number (x+dx) and computes cos(x+dx) */
+/* as Double-Length number and store it in array v .It computes it by */
+/* arithmetic action on Double-Length numbers                         */
+/*(x+dx) between 0 and PI/4                                           */
+/**********************************************************************/
+
+void
+SECTION
+__dubcos (double x, double dx, double v[])
+{
+  double r, s, c, cc, d, dd, d2, dd2, e, ee,
+	 sn, ssn, cs, ccs, ds, dss, dc, dcc;
+#ifndef DLA_FMS
+  double p, hx, tx, hy, ty, q;
+#endif
+  mynumber u;
+  int4 k;
+  u.x = x + big.x;
+  k = u.i[LOW_HALF] << 2;
+  x = x - (u.x - big.x);
+  d = x + dx;
+  dd = (x - d) + dx;  /* cos(x+dx)=cos(Xi+t)=cos(Xi)cos(t) - sin(Xi)sin(t) */
+  MUL2 (d, dd, d, dd, d2, dd2, p, hx, tx, hy, ty, q, c, cc);
+  sn = __sincostab.x[k];     /*                                  */
+  ssn = __sincostab.x[k + 1];  /*      sin(Xi) and cos(Xi)         */
+  cs = __sincostab.x[k + 2];   /*                                  */
+  ccs = __sincostab.x[k + 3];  /*                                  */
+  MUL2 (d2, dd2, s7.x, ss7.x, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, s5.x, ss5.x, ds, dss, r, s);
+  MUL2 (d2, dd2, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, s3.x, ss3.x, ds, dss, r, s);
+  MUL2 (d2, dd2, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (d, dd, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, d, dd, ds, dss, r, s);
+
+  MUL2 (d2, dd2, c8.x, cc8.x, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c6.x, cc6.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c4.x, cc4.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c2.x, cc2.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+
+  MUL2 (cs, ccs, ds, dss, e, ee, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (dc, dcc, sn, ssn, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+
+  MUL2 (d2, dd2, s7.x, ss7.x, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, s5.x, ss5.x, ds, dss, r, s);
+  MUL2 (d2, dd2, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, s3.x, ss3.x, ds, dss, r, s);
+  MUL2 (d2, dd2, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (d, dd, ds, dss, ds, dss, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (ds, dss, d, dd, ds, dss, r, s);
+  MUL2 (d2, dd2, c8.x, cc8.x, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c6.x, cc6.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c4.x, cc4.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (dc, dcc, c2.x, cc2.x, dc, dcc, r, s);
+  MUL2 (d2, dd2, dc, dcc, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (sn, ssn, ds, dss, e, ee, p, hx, tx, hy, ty, q, c, cc);
+  MUL2 (dc, dcc, cs, ccs, dc, dcc, p, hx, tx, hy, ty, q, c, cc);
+  ADD2 (e, ee, dc, dcc, e, ee, r, s);
+  SUB2 (cs, ccs, e, ee, e, ee, r, s);
+
+  v[0] = e;
+  v[1] = ee;
+}
+/**********************************************************************/
+/* Routine receive Double-Length number (x+dx) and computes cos(x+dx) */
+/* as Double-Length number and store it in array v                    */
+/**********************************************************************/
+void
+SECTION
+__docos (double x, double dx, double v[])
+{
+  double y, yy, p, w[2];
+  if (x > 0)
+    {
+      y = x; yy = dx;
+    }
+  else
+    {
+      y = -x; yy = -dx;
+    }
+  if (y < 0.5 * hp0.x)                                 /*  y< PI/4    */
+    {
+      __dubcos (y, yy, w); v[0] = w[0]; v[1] = w[1];
+    }
+  else if (y < 1.5 * hp0.x)                        /* y< 3/4 * PI */
+    {
+      p = hp0.x - y; /* p = PI/2 - y */
+      yy = hp1.x - yy;
+      y = p + yy;
+      yy = (p - y) + yy;
+      if (y > 0)
+	{
+	  __dubsin (y, yy, w); v[0] = w[0]; v[1] = w[1];
+	}
+      /* cos(x) = sin ( 90 -  x ) */
+      else
+	{
+	  __dubsin (-y, -yy, w); v[0] = -w[0]; v[1] = -w[1];
+	}
+    }
+  else   /* y>= 3/4 * PI */
+    {
+      p = 2.0 * hp0.x - y; /* p = PI- y */
+      yy = 2.0 * hp1.x - yy;
+      y = p + yy;
+      yy = (p - y) + yy;
+      __dubcos (y, yy, w);
+      v[0] = -w[0];
+      v[1] = -w[1];
+    }
+}