initial

1 files changed, 77 insertions, 0 deletions

diff --git a/src/mp-equation.h b/src/mp-equation.h
new file mode 100644
index 0000000..60e6690
--- /dev/null
+++ b/src/mp-equation.h
@@ -0,0 +1,77 @@
+/*  Copyright (c) 2004-2008 Sami Pietila
+ *  Copyright (c) 2008-2009 Robert Ancell
+ *
+ *  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, 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., 59 Temple Place - Suite 330, Boston, MA
+ *  02111-1307, USA.
+ */
+
+#ifndef MP_EQUATION_H
+#define MP_EQUATION_H
+
+#include "mp.h"
+
+typedef enum
+{
+    PARSER_ERR_NONE = 0,
+    PARSER_ERR_INVALID,
+    PARSER_ERR_OVERFLOW,
+    PARSER_ERR_UNKNOWN_VARIABLE,
+    PARSER_ERR_UNKNOWN_FUNCTION,
+    PARSER_ERR_UNKNOWN_CONVERSION,
+    PARSER_ERR_MP
+} MPErrorCode;
+
+/* Options for parser */
+typedef struct {
+    /* Default number base */
+    int base;
+
+    /* The wordlength for binary operations in bits (e.g. 8, 16, 32) */
+    int wordlen;
+
+    /* Units for angles (e.g. radians, degrees) */
+    MPAngleUnit angle_units;
+
+    // FIXME:
+    // int enable_builtins;
+
+    /* Data to pass to callbacks */
+    void *callback_data;
+  
+    /* Function to check if a variable is defined */
+    int (*variable_is_defined)(const char *name, void *data);
+
+    /* Function to get variable values */
+    int (*get_variable)(const char *name, MPNumber *z, void *data);
+
+    /* Function to set variable values */
+    void (*set_variable)(const char *name, const MPNumber *x, void *data);
+
+    /* Function to check if a function is defined */
+    int (*function_is_defined)(const char *name, void *data);
+
+    /* Function to solve functions */
+    int (*get_function)(const char *name, const MPNumber *x, MPNumber *z, void *data);
+
+    /* Function to convert units */
+    int (*convert)(const MPNumber *x, const char *x_units, const char *z_units, MPNumber *z, void *data);
+} MPEquationOptions;
+
+MPErrorCode mp_equation_parse(const char *expression, MPEquationOptions *options, MPNumber *result, char **error_token);
+const char *mp_error_code_to_string(MPErrorCode error_code);
+
+int sub_atoi(const char *data);
+int super_atoi(const char *data);
+#endif