1 files changed, 105 insertions, 0 deletions
diff --git a/engines/glk/frotz/processor_maths.cpp b/engines/glk/frotz/processor_maths.cpp
new file mode 100644
index 0000000000..90e09ca8b9
--- /dev/null
+++ b/engines/glk/frotz/processor_maths.cpp
@@ -0,0 +1,105 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "glk/frotz/processor.h"
+
+namespace Gargoyle {
+namespace Frotz {
+
+void Processor::z_add() {
+    store((zword)((short)zargs[0] + (short)zargs[1]));
+}
+
+void Processor::z_and() {
+    store((zword)(zargs[0] & zargs[1]));
+}
+
+void Processor::z_art_shift() {
+    if ((short)zargs[1] > 0)
+		store((zword)((short)zargs[0] << (short)zargs[1]));
+    else
+		store((zword)((short)zargs[0] >> - (short)zargs[1]));
+}
+
+void Processor::z_div() {
+    if (zargs[1] == 0)
+		runtimeError(ERR_DIV_ZERO);
+
+    store((zword)((short)zargs[0] / (short)zargs[1]));
+}
+
+void Processor::z_je() {
+    branch(
+		zargc > 1 && (zargs[0] == zargs[1] || (
+		zargc > 2 && (zargs[0] == zargs[2] || (
+		zargc > 3 && (zargs[0] == zargs[3])))))
+	);
+}
+
+void Processor::z_jg() {
+    branch((short)zargs[0] > (short)zargs[1]);
+}
+
+void Processor::z_jl() {
+    branch((short)zargs[0] < (short)zargs[1]);
+}
+
+void Processor::z_jz() {
+    branch((short)zargs[0] == 0);
+}
+
+void Processor::z_log_shift() {
+    if ((short)zargs[1] > 0)
+		store((zword)(zargs[0] << (short)zargs[1]));
+    else
+		store((zword)(zargs[0] >> - (short)zargs[1]));
+}
+
+void Processor::z_mod() {
+    if (zargs[1] == 0)
+		runtimeError(ERR_DIV_ZERO);
+
+    store((zword)((short)zargs[0] % (short)zargs[1]));
+}
+
+void Processor::z_mul() {
+    store((zword)((short)zargs[0] * (short)zargs[1]));
+}
+
+void Processor::z_not() {
+    store((zword)~zargs[0]);
+}
+
+void Processor::z_or() {
+    store((zword)(zargs[0] | zargs[1]));
+}
+
+void Processor::z_sub() {
+    store((zword)((short)zargs[0] - (short)zargs[1]));
+}
+
+void Processor::z_test() {
+	branch((zargs[0] & zargs[1]) == zargs[1]);
+}
+
+} // End of namespace Scott
+} // End of namespace Gargoyle