// -*- C++ -*-
-/* This file is part of
- * ======================================================
- *
- * LyX, The Document Processor
- *
- * Copyright (C) 1995 Matthias Ettrich
- * Copyright (C) 1995-1999 The LyX Team.
+/**
+ * \file lyxlib.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
*
- * ====================================================== */
+ * A selection of useful system functions made
+ * handy for C++ usage.
+ *
+ * \author Lars Gullik Bjønnes
+ *
+ * Full author contact details are available in file CREDITS.
+ */
#ifndef LYX_LIB_H
#define LYX_LIB_H
-#include "LString.h"
+namespace lyx {
+namespace support {
+
+/// FIXME: some point to this hmm ?
+int kill(int pid, int sig);
+
+/**
+ * Returns true if var is approximately equal to number with allowed error
+ * of 'error'.
+ *
+ * Usage: if (float_equal(var, number, 0.0001)) { }
+ *
+ * This will check if 'var' is approx. equal to 'number' with error of 1/1000
+ */
+inline bool float_equal(double var, double number, double error)
+{
+ return (number - error <= var && var <= number + error);
+}
-// Where can I put this? I found the occurence of the same code
-// three/four times. Don't you think it better to use a macro definition
-// (an inlined member of some class)?
+} // namespace support
+} // namespace lyx
-// This should have been a namespace
-struct lyx {
- ///
- static char * getcwd(char * buffer, size_t size);
- ///
- static int chdir(char const * name);
- /// generates an checksum
- static unsigned long sum(char const * file);
- /// returns a date string
- static char * date();
- ///
- static string getUserName();
- ///
- static int kill(int pid, int sig);
- ///
- static void abort();
-};
-#endif
+#endif /* LYX_LIB_H */