Reviewed-by: Thomas Bächler <thomas@xxxxxxxxxxxxx>
Reviewed-by: Dave Reisner <dreisner@xxxxxxxxxxxxx>
Signed-off-by: Sami Kerola <kerolasa@xxxxxx>
---
misc-utils/cal.c | 45 ++++++++++++++++++++++++++++-----------------
1 file changed, 28 insertions(+), 17 deletions(-)
diff --git a/misc-utils/cal.c b/misc-utils/cal.c
index 13830de..e6dd92f 100644
--- a/misc-utils/cal.c
+++ b/misc-utils/cal.c
@@ -209,23 +209,6 @@ char j_day_headings[J_WEEK_LEN*6+1];
/* weekstart = 1 => " M Tu W Th F S S " */
const char *full_month[12];
-/* leap year -- account for gregorian reformation in 1752 */
-#define leap_year(yr) \
- ((yr) <= 1752 ? !((yr) % 4) : \
- (!((yr) % 4) && ((yr) % 100)) || !((yr) % 400))
-
-/* number of centuries since 1700, not inclusive */
-#define centuries_since_1700(yr) \
- ((yr) > 1700 ? (yr) / 100 - 17 : 0)
-
-/* number of centuries since 1700 whose modulo of 400 is 0 */
-#define quad_centuries_since_1700(yr) \
- ((yr) > 1600 ? ((yr) - 1600) / 400 : 0)
-
-/* number of leap years between year 1 and this year, not inclusive */
-#define leap_years_since_year_1(yr) \
- ((yr) / 4 - centuries_since_1700(yr) + quad_centuries_since_1700(yr))
-
/* 0 => sunday, 1 => monday */
int weekstart=0;
int julian;
@@ -239,6 +222,9 @@ struct fmt_st
char s[FMT_ST_LINES][FMT_ST_CHARS];
};
+static int leap_year(int year);
+static int centuries_since_1700(int year, int centuries);
+static int leap_years_since_year_1(int year);
char * ascii_day(char *, int);
int center_str(const char* src, char* dest, size_t dest_size, size_t width);
void center(const char *, size_t, int);
@@ -413,6 +399,31 @@ main(int argc, char **argv) {
return EXIT_SUCCESS;
}
+/* leap year -- account for gregorian reformation in 1752 */
+static int leap_year(int year)
+{
+ if (year <= 1752)
+ return !(year % 4);
+ else
+ return ( !(year % 4) && (year % 100) ) || !(year % 400);
+}
+
+/* number of centuries since 1700 */
+static int centuries_since_1700(int year, int n)
+{
+ if (year < 1700)
+ return 0;
+ else
+ return ((year / (100 * n)) - (17 / n));
+}
+
+/* number of leap years between year 1 and this year, not inclusive */
+static int leap_years_since_year_1(int year)
+{
+ return (year / 4 - centuries_since_1700(year, 1) +
+ centuries_since_1700(year, 4));
+}
+
void headers_init(void)
{
int i, wd;
--
1.8.2.2
--
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