From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 unix/boot/spp/rpp/ratlibr/wkday.r | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 unix/boot/spp/rpp/ratlibr/wkday.r

(limited to 'unix/boot/spp/rpp/ratlibr/wkday.r')

diff --git a/unix/boot/spp/rpp/ratlibr/wkday.r b/unix/boot/spp/rpp/ratlibr/wkday.r
new file mode 100644
index 00000000..027d14a2
--- /dev/null
+++ b/unix/boot/spp/rpp/ratlibr/wkday.r
@@ -0,0 +1,23 @@
+include	defs
+
+# wkday --- get day-of-week corresponding to month,day,year
+
+   integer function wkday (month, day, year)
+   integer month, day, year
+
+   integer lmonth, lday, lyear
+
+   lmonth = month - 2
+   lday = day
+   lyear = year
+
+   if (lmonth <= 0) {
+      lmonth = lmonth + 12
+      lyear = lyear - 1
+      }
+
+   wkday = mod (lday + (26 * lmonth - 2) / 10 + lyear + lyear / 4 - 34,
+       7) + 1
+
+   return
+   end
-- 
cgit