1 files changed, 19 insertions, 0 deletions
diff --git a/src/libcf/month_day.c b/src/libcf/month_day.c
new file mode 100644
index 0000000..1ecfae1
--- /dev/null
+++ b/src/libcf/month_day.c
@@ -0,0 +1,19 @@
+/* month_day: return month,day from day of year */
+/*	07/21/04    1.4   wvd	Add () to defn of leap */
+
+#include "calfuse.h"
+
+void month_day(int year, int yearday, int *pmonth, int *pday)
+{
+    static char daytab[2][13]={
+	{0,31,28,31,30,31,30,31,31,30,31,30,31},
+	{0,31,29,31,30,31,30,31,31,30,31,30,31}
+    };
+    int i, leap;
+
+    leap = ((year%4 == 0 && year%100 != 0) || year%400 == 0);
+    for (i=1; yearday>daytab[leap][i]; i++)
+	yearday-=daytab[leap][i];
+    *pmonth=i;
+    *pday=yearday;
+}