about summary refs log tree commit diff
path: root/sysdeps/m68k/fpu/k_cos.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/m68k/fpu/k_cos.c')
-rw-r--r--sysdeps/m68k/fpu/k_cos.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/sysdeps/m68k/fpu/k_cos.c b/sysdeps/m68k/fpu/k_cos.c
new file mode 100644
index 0000000000..dd6c215c23
--- /dev/null
+++ b/sysdeps/m68k/fpu/k_cos.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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.
+
+   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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; 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"
+
+#ifndef FUNC
+#define FUNC cos
+#endif
+#ifndef float_type
+#define float_type double
+#endif
+
+#define __CONCATX(a,b) __CONCAT(a,b)
+
+float_type
+__CONCATX(__kernel_,FUNC) (x, y)
+     float_type x;
+     float_type y;
+{
+  float_type sin_x, cos_x, sin_y, cos_y;
+  __asm__ __volatile__ ("fsincosx %2,%0:%1" : "=f" (cos_x), "=f" (sin_x)
+			: "f" (x));
+  __asm__ __volatile__ ("fsincosx %2,%0:%1" : "=f" (cos_y), "=f" (sin_y)
+			: "f" (y));
+  return cos_x * cos_y - sin_x * sin_y;
+}