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| author | Igor Sysoev <igor@sysoev.ru> | 2008-04-10 09:37:12 +0000 |
|---|---|---|
| committer | Igor Sysoev <igor@sysoev.ru> | 2008-04-10 09:37:12 +0000 |
| commit | b8a71b6c1bf2a7883fa94f24155791ab2c3d3924 (patch) | |
| tree | 17e3eddbdd5fb26c354c182a18c7533f99551dd2 | |
| parent | d52c878692f4a0dde54cb4bf76be1d0a7689b14e (diff) | |
| download | nginx-b8a71b6c1bf2a7883fa94f24155791ab2c3d3924.tar.gz nginx-b8a71b6c1bf2a7883fa94f24155791ab2c3d3924.zip | |
comment Gauss' formula
| -rw-r--r-- | src/http/ngx_http_parse_time.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/src/http/ngx_http_parse_time.c b/src/http/ngx_http_parse_time.c index 115508954..eac23f2f9 100644 --- a/src/http/ngx_http_parse_time.c +++ b/src/http/ngx_http_parse_time.c @@ -240,7 +240,7 @@ ngx_http_parse_time(u_char *value, size_t len) /* * shift new year to March 1 and start months from 1 (not 0), - * it is needed for Gauss's formula + * it is needed for Gauss' formula */ if (--month <= 0) { @@ -248,11 +248,20 @@ ngx_http_parse_time(u_char *value, size_t len) year -= 1; } - /* Gauss's formula for Grigorian days from March 1, 1 BC */ + /* Gauss' formula for Grigorian days since March 1, 1 BC */ - return (365 * year + year / 4 - year / 100 + year / 400 - + 367 * month / 12 - 31 - + day + return ( + /* days in years including leap years since March 1, 1 BC */ + + 365 * year + year / 4 - year / 100 + year / 400 + + /* days before the month */ + + + 367 * month / 12 - 30 + + /* days before the day */ + + + day - 1 /* * 719527 days were between March 1, 1 BC and March 1, 1970, |