Update.

1 files changed, 78 insertions, 0 deletions

diff --git a/sysdeps/ieee754/dbl-64/s_sincos.c b/sysdeps/ieee754/dbl-64/s_sincos.c
new file mode 100644
index 0000000000..5bc564ba5b
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/s_sincos.c
@@ -0,0 +1,78 @@
+/* Compute sine and cosine of argument.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <math.h>
+
+#include "math_private.h"
+
+
+void
+__sincos (double x, double *sinx, double *cosx)
+{
+  int32_t ix;
+
+  /* High word of x. */
+  GET_HIGH_WORD (ix, x);
+
+  /* |x| ~< pi/4 */
+  ix &= 0x7fffffff;
+  if (ix <= 0x3fe921fb)
+    {
+      *sinx = __kernel_sin (x, 0.0, 0);
+      *cosx = __kernel_cos (x, 0.0);
+    }
+  else if (ix>=0x7ff00000)
+    {
+      /* sin(Inf or NaN) is NaN */
+      *sinx = *cosx = x - x;
+    }
+  else
+    {
+      /* Argument reduction needed.  */
+      double y[2];
+      int n;
+
+      n = __ieee754_rem_pio2 (x, y);
+      switch (n & 3)
+	{
+	case 0:
+	  *sinx = __kernel_sin (y[0], y[1], 1);
+	  *cosx = __kernel_cos (y[0], y[1]);
+	  break;
+	case 1:
+	  *sinx = __kernel_cos (y[0], y[1]);
+	  *cosx = -__kernel_sin (y[0], y[1], 1);
+	  break;
+	case 2:
+	  *sinx = -__kernel_sin (y[0], y[1], 1);
+	  *cosx = -__kernel_cos (y[0], y[1]);
+	  break;
+	default:
+	  *sinx = -__kernel_cos (y[0], y[1]);
+	  *cosx = __kernel_sin (y[0], y[1], 1);
+	  break;
+	}
+    }
+}
+weak_alias (__sincos, sincos)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__sincos, __sincosl)
+weak_alias (__sincos, sincosl)
+#endif