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authorreinelt <>2003-12-19 05:50:34 +0000
committerreinelt <>2003-12-19 05:50:34 +0000
commit2826aa2646c22f7697c67dec7bd7d9f9db37667b (patch)
tree708fdc91a0214927d938905faae413b5147e322f
parente107a9b0e8241de1e0f7392a60b8a74272665245 (diff)
downloadlcd4linux-2826aa2646c22f7697c67dec7bd7d9f9db37667b.tar.gz
[lcd4linux @ 2003-12-19 05:50:34 by reinelt]
added plugin_math.c and plugin_string.c
-rw-r--r--plugin_math.c128
-rw-r--r--plugin_string.c62
2 files changed, 190 insertions, 0 deletions
diff --git a/plugin_math.c b/plugin_math.c
new file mode 100644
index 0000000..aaf5ec6
--- /dev/null
+++ b/plugin_math.c
@@ -0,0 +1,128 @@
+/* $Id: plugin_math.c,v 1.1 2003/12/19 05:50:34 reinelt Exp $
+ *
+ * math plugin
+ *
+ * Copyright 2003 Michael Reinelt <reinelt@eunet.at>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux 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.
+ *
+ * LCD4Linux 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.
+ *
+ *
+ * $Log: plugin_math.c,v $
+ * Revision 1.1 2003/12/19 05:50:34 reinelt
+ * added plugin_math.c and plugin_string.c
+ *
+ */
+
+/*
+ * exported functions:
+ *
+ * int plugin_init_math (void)
+ * adds some handy constants and functions
+ *
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+
+#include "debug.h"
+#include "plugin.h"
+
+
+static void my_sqrt (RESULT *result, RESULT *arg1)
+{
+ double value=sqrt(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_exp (RESULT *result, RESULT *arg1)
+{
+ double value=exp(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_ln (RESULT *result, RESULT *arg1)
+{
+ double value=log(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_log (RESULT *result, RESULT *arg1)
+{
+ double value=log10(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_sin (RESULT *result, RESULT *arg1)
+{
+ double value=sin(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_cos (RESULT *result, RESULT *arg1)
+{
+ double value=cos(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_tan (RESULT *result, RESULT *arg1)
+{
+ double value=tan(R2N(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+
+static void my_min (RESULT *result, RESULT *arg1, RESULT *arg2)
+{
+ double a1=R2N(arg1);
+ double a2=R2N(arg2);
+ double value=a1<a2?a1:a2;
+ SetResult(&result, R_NUMBER, &value);
+}
+
+static void my_max (RESULT *result, RESULT *arg1, RESULT *arg2)
+{
+ double a1=R2N(arg1);
+ double a2=R2N(arg2);
+ double value=a1>a2?a1:a2;
+ SetResult(&result, R_NUMBER, &value);
+}
+
+
+int plugin_init_math (void)
+{
+ // set some handy constants
+ AddNumericVariable ("Pi", M_PI);
+ AddNumericVariable ("e", M_E);
+
+ // register some basic math functions
+ AddFunction ("sqrt", 1, my_sqrt);
+ AddFunction ("exp", 1, my_exp);
+ AddFunction ("ln", 1, my_ln);
+ AddFunction ("log", 1, my_log);
+ AddFunction ("sin", 1, my_sin);
+ AddFunction ("cos", 1, my_cos);
+ AddFunction ("tan", 1, my_tan);
+
+ // min, max
+ AddFunction ("min", 2, my_min);
+ AddFunction ("max", 2, my_max);
+
+ return 0;
+}
+
diff --git a/plugin_string.c b/plugin_string.c
new file mode 100644
index 0000000..63ca3a7
--- /dev/null
+++ b/plugin_string.c
@@ -0,0 +1,62 @@
+/* $Id: plugin_string.c,v 1.1 2003/12/19 05:50:34 reinelt Exp $
+ *
+ * string plugin
+ *
+ * Copyright 2003 Michael Reinelt <reinelt@eunet.at>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux 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.
+ *
+ * LCD4Linux 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.
+ *
+ *
+ * $Log: plugin_string.c,v $
+ * Revision 1.1 2003/12/19 05:50:34 reinelt
+ * added plugin_math.c and plugin_string.c
+ *
+ */
+
+/*
+ * exported functions:
+ *
+ * int plugin_init_string (void)
+ * adds some handy string functions
+ *
+ */
+
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "debug.h"
+#include "plugin.h"
+
+
+static void my_strlen (RESULT *result, RESULT *arg1)
+{
+ double value=strlen(R2S(arg1));
+ SetResult(&result, R_NUMBER, &value);
+}
+
+
+int plugin_init_string (void)
+{
+
+ // register some basic string functions
+ AddFunction ("strlen", 1, my_strlen);
+
+ return 0;
+}
+