1 files changed, 57 insertions, 0 deletions
diff --git a/grub-core/gentrigtables.c b/grub-core/gentrigtables.c
new file mode 100644
index 0000000..fface6e
--- /dev/null
+++ b/grub-core/gentrigtables.c
@@ -0,0 +1,57 @@
+/* Generate trigonometric function tables. */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008, 2009  Free Software Foundation, Inc.
+ *
+ *  GRUB 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _GNU_SOURCE 1
+
+#include <grub/trig.h>
+#include <math.h>
+#include <stdio.h>
+
+int
+main (int argc __attribute__ ((unused)),
+      char **argv __attribute__ ((unused)))
+{
+  int i;
+
+  printf ("#include <grub/types.h>\n");
+  printf ("#include <grub/dl.h>\n");
+  printf ("\n");
+
+  printf ("/* Under copyright legislature such automated output isn't\n");
+  printf ("covered by any copyright. Hence it's public domain. Public\n");
+  printf ("domain works can be dual-licenced with any license. */\n");
+  printf ("GRUB_MOD_LICENSE (\"GPLv3+\");");
+  printf ("GRUB_MOD_DUAL_LICENSE (\"Public Domain\");");
+
+#define TAB(op) \
+  printf ("const grub_int16_t grub_trig_" #op "tab[] =\n{"); \
+  for (i = 0; i < GRUB_TRIG_ANGLE_MAX; i++) \
+    { \
+      double x = i * 2 * M_PI / GRUB_TRIG_ANGLE_MAX; \
+      if (i % 10 == 0) \
+	printf ("\n    "); \
+      printf ("%d,", (int) (round (op (x) * GRUB_TRIG_FRACTION_SCALE))); \
+    } \
+  printf ("\n};\n")
+
+  TAB(sin);
+  TAB(cos);
+
+  return 0;
+}