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gmtimew_noleapsecond uses tables for mon and mday.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64380 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2018-08-15 14:24:44 +00:00
parent 50ad099590
commit 3d3ff9f324
1 changed files with 69 additions and 14 deletions
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83
time.c
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@ -743,6 +743,67 @@ static const int leap_year_days_in_month[] = {
31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
};
#define M28(m) \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m)
#define M29(m) \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m)
#define M30(m) \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m)
#define M31(m) \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), \
(m),(m),(m),(m),(m),(m),(m),(m),(m),(m), (m)
static const uint8_t common_year_mon_of_yday[] = {
M31(1), M28(2), M31(3), M30(4), M31(5), M30(6),
M31(7), M31(8), M30(9), M31(10), M30(11), M31(12)
};
static const uint8_t leap_year_mon_of_yday[] = {
M31(1), M29(2), M31(3), M30(4), M31(5), M30(6),
M31(7), M31(8), M30(9), M31(10), M30(11), M31(12)
};
#undef M28
#undef M29
#undef M30
#undef M31
#define D28 \
1,2,3,4,5,6,7,8,9, \
10,11,12,13,14,15,16,17,18,19, \
20,21,22,23,24,25,26,27,28
#define D29 \
1,2,3,4,5,6,7,8,9, \
10,11,12,13,14,15,16,17,18,19, \
20,21,22,23,24,25,26,27,28,29
#define D30 \
1,2,3,4,5,6,7,8,9, \
10,11,12,13,14,15,16,17,18,19, \
20,21,22,23,24,25,26,27,28,29,30
#define D31 \
1,2,3,4,5,6,7,8,9, \
10,11,12,13,14,15,16,17,18,19, \
20,21,22,23,24,25,26,27,28,29,30,31
static const uint8_t common_year_mday_of_yday[] = {
/* 1 2 3 4 5 6 7 8 9 10 11 12 */
D31, D28, D31, D30, D31, D30, D31, D31, D30, D31, D30, D31
};
static const uint8_t leap_year_mday_of_yday[] = {
D31, D29, D31, D30, D31, D30, D31, D31, D30, D31, D30, D31
};
#undef D28
#undef D29
#undef D30
#undef D31
static int
calc_tm_yday(long tm_year, int tm_mon, int tm_mday)
{
@ -827,8 +888,7 @@ static void
gmtimew_noleapsecond(wideval_t timew, struct vtm *vtm)
{
VALUE v;
int i, n, x, y;
const int *yday_offset;
int n, x, y;
int wday;
VALUE timev;
wideval_t timew2, w, w2;
@ -913,18 +973,13 @@ gmtimew_noleapsecond(wideval_t timew, struct vtm *vtm)
vtm->yday = n+1;
vtm->year = addv(vtm->year, INT2NUM(y));
if (leap_year_p(y))
yday_offset = leap_year_yday_offset;
else
yday_offset = common_year_yday_offset;
for (i = 0; i < 12; i++) {
if (yday_offset[i] < n) {
vtm->mon = i+1;
vtm->mday = n - yday_offset[i];
}
else
break;
if (leap_year_p(y)) {
vtm->mon = leap_year_mon_of_yday[n];
vtm->mday = leap_year_mday_of_yday[n];
}
else {
vtm->mon = common_year_mon_of_yday[n];
vtm->mday = common_year_mday_of_yday[n];
}
vtm->utc_offset = INT2FIX(0);