Mercurial > libjeffpc
changeset 863:bb22b8ea2242
time: add is_leap_year function
Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
| author | Josef 'Jeff' Sipek <jeffpc@josefsipek.net> |
|---|---|
| date | Wed, 13 Sep 2023 10:23:45 -0400 |
| parents | 6075f43a5d72 |
| children | 241c40daa948 |
| files | include/jeffpc/time.h |
| diffstat | 1 files changed, 12 insertions(+), 1 deletions(-) [+] |
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--- a/include/jeffpc/time.h Tue Apr 04 20:29:03 2023 -0400 +++ b/include/jeffpc/time.h Wed Sep 13 10:23:45 2023 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2016-2017 Josef 'Jeff' Sipek <jeffpc@josefsipek.net> + * Copyright (c) 2016-2017,2023 Josef 'Jeff' Sipek <jeffpc@josefsipek.net> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal @@ -26,6 +26,7 @@ #include <jeffpc/error.h> #include <inttypes.h> +#include <stdbool.h> #include <time.h> static inline uint64_t __gettime(int clock) @@ -57,4 +58,14 @@ return __gettime(CLOCK_REALTIME); } +/* + * Various functions to deal with gregorian dates. + */ + +/* Is the year leap? */ +static inline bool is_leap_year(int y) +{ + return ((y % 4) == 0) && (((y % 400) == 0) || ((y % 100) != 0)); +} + #endif