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+/* catdvi - get text from DVI files
+ Copyright (C) 1999 Antti-Juhani Kaijanaho <gaia@iki.fi>
+
+ This program 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 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 General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef REGSTA_H
+#define REGSTA_H
+
+#include "bytesex.h"
+
+/* Handle the registers and the stack. */
+
+#define REGISTER_H 0
+#define REGISTER_V 1
+#define REGISTER_W 2
+#define REGISTER_X 3
+#define REGISTER_Y 4
+#define REGISTER_Z 5
+
+/* Set registers to zero and initialize an empty stack with the given
+ maximum depth. */
+void init_regs_stack(int depth);
+
+/* Get the value of one of the registers (h, v, w, x, y, z). */
+
+sint32 get_reg(int reg);
+
+/* Set the value of one of the registers (h, v, w, x, y, z). */
+void set_reg(int reg, sint32);
+
+/* Add to the value of one of the registers. */
+void add_reg(int reg, sint32 a);
+
+/* Push the registers on the stack. */
+void push_regs(void);
+
+/* Pop the registers off the stack. */
+void pop_regs(void);
+
+/* For debug purposes, dump registers to the standard error stream, if
+ level is right. */
+void dump_regs(int level);
+
+#endif /* REGSTA_H */