Move 1988-2004 entries into subdirs

We we move 1988-2004 entries from all of a year's winning entries
in a single directory to each winner being in their own sub-directory
under the given year directory.

2000/rince/dmy2jd.c

@@ -0,0 +1,46 @@
+/*
+ * Calculates the Julian Day from any day,month,year tuple.
+ *
+ * This is valid for all dates, including both julian and gregorian calendars.
+ *
+ * The algorithm is taken from Astronomical Algorithms by Jean Meeus.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+double dmy2jd(double d, int m, int y) {
+    int b;
+
+    if (m <= 2) {
+	y--;
+	m += 12;
+    }
+    
+    /* Handle Julian dates */
+    if (y < 1582 || (y == 1582 && (m < 10 || (m == 10 && d <= 4)))) {
+	b = 0;
+    } else {
+	int a;
+
+	a = y/100;
+	b = 2 - a + a/4;
+    }
+
+    return (int)(365.25 * (y+4716)) + (int)(30.6001 * (m+1)) + d + b - 1524.5;
+}
+
+int main(int argc, char **argv) {
+    double jd;
+
+    if (argc != 4) {
+	fprintf(stderr, "usage: %s day_float month_int year_int\n", argv[0]);
+	return 1;
+    }
+
+    jd = dmy2jd(atof(argv[1]), atoi(argv[2]), atoi(argv[3]));
+    printf("%f\n", jd);
+
+    return 0;
+}