--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ueda/libueda/util.c	Mon Jul 20 00:24:37 2015 +0000
@@ -0,0 +1,37 @@
+/*
+ * Miscellaneous utility functions for libueda
+ */
+
+#include <ctype.h>
+#include <strings.h>
+
+extern char *malloc();
+
+char *
+copystr(src)
+	register char *src;
+{
+	register char *buf;
+
+	buf = malloc(strlen(src) + 1);
+	if (!buf) {
+		perror("malloc");
+		exit(1);
+	}
+	strcpy(buf, src);
+	return(buf);
+}
+
+string_is_valid_decnum(str)
+	char *str;
+{
+	register char *cp = str;
+
+	if (*cp == '-')
+		cp++;
+	if (!isdigit(*cp))
+		return(0);
+	while (isdigit(*cp))
+		cp++;
+	return(*cp == '\0');
+}