Adding upstream version 15.4.upstream/15.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/src/timezone/private.h b/src/timezone/private.h
new file mode 100644
index 0000000..533e3d9
--- /dev/null
+++ b/src/timezone/private.h
@@ -0,0 +1,163 @@
+/* Private header for tzdb code.  */
+
+#ifndef PRIVATE_H
+
+#define PRIVATE_H
+
+/*
+ * This file is in the public domain, so clarified as of
+ * 1996-06-05 by Arthur David Olson.
+ *
+ * IDENTIFICATION
+ *	  src/timezone/private.h
+ */
+
+/*
+ * This header is for use ONLY with the time conversion code.
+ * There is no guarantee that it will remain unchanged,
+ * or that it will remain at all.
+ * Do NOT copy it to any system include directory.
+ * Thank you!
+ */
+
+#include <limits.h>				/* for CHAR_BIT et al. */
+#include <sys/wait.h>			/* for WIFEXITED and WEXITSTATUS */
+#include <unistd.h>				/* for F_OK and R_OK */
+
+#include "pgtime.h"
+
+/* This string was in the Factory zone through version 2016f.  */
+#define GRANDPARENTED	"Local time zone must be set--see zic manual page"
+
+/*
+ * IANA has a bunch of HAVE_FOO #defines here, but in PG we want pretty
+ * much all of that to be done by PG's configure script.
+ */
+
+#ifndef ENOTSUP
+#define ENOTSUP EINVAL
+#endif
+#ifndef EOVERFLOW
+#define EOVERFLOW EINVAL
+#endif
+
+/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
+#define is_digit(c) ((unsigned)(c) - '0' <= 9)
+
+/* PG doesn't currently rely on <inttypes.h>, so work around strtoimax() */
+#undef strtoimax
+#ifdef HAVE_STRTOLL
+#define strtoimax strtoll
+#else
+#define strtoimax strtol
+#endif
+
+
+/*
+ * Finally, some convenience items.
+ */
+
+#define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
+#define TYPE_SIGNED(type) (((type) -1) < 0)
+#define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0)
+
+/*
+ * Max and min values of the integer type T, of which only the bottom
+ * B bits are used, and where the highest-order used bit is considered
+ * to be a sign bit if T is signed.
+ */
+#define MAXVAL(t, b)						\
+  ((t) (((t) 1 << ((b) - 1 - TYPE_SIGNED(t)))			\
+	- 1 + ((t) 1 << ((b) - 1 - TYPE_SIGNED(t)))))
+#define MINVAL(t, b)						\
+  ((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0))
+
+/* The extreme time values, assuming no padding.  */
+#define TIME_T_MIN MINVAL(pg_time_t, TYPE_BIT(pg_time_t))
+#define TIME_T_MAX MAXVAL(pg_time_t, TYPE_BIT(pg_time_t))
+
+/*
+ * 302 / 1000 is log10(2.0) rounded up.
+ * Subtract one for the sign bit if the type is signed;
+ * add one for integer division truncation;
+ * add one more for a minus sign if the type is signed.
+ */
+#define INT_STRLEN_MAXIMUM(type) \
+	((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
+	1 + TYPE_SIGNED(type))
+
+/*
+ * INITIALIZE(x)
+ */
+#define INITIALIZE(x)	((x) = 0)
+
+#undef _
+#define _(msgid) (msgid)
+
+/* Handy macros that are independent of tzfile implementation.  */
+
+#define YEARSPERREPEAT		400 /* years before a Gregorian repeat */
+
+#define SECSPERMIN	60
+#define MINSPERHOUR 60
+#define HOURSPERDAY 24
+#define DAYSPERWEEK 7
+#define DAYSPERNYEAR	365
+#define DAYSPERLYEAR	366
+#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
+#define SECSPERDAY	((int32) SECSPERHOUR * HOURSPERDAY)
+#define MONSPERYEAR 12
+
+#define TM_SUNDAY	0
+#define TM_MONDAY	1
+#define TM_TUESDAY	2
+#define TM_WEDNESDAY	3
+#define TM_THURSDAY 4
+#define TM_FRIDAY	5
+#define TM_SATURDAY 6
+
+#define TM_JANUARY	0
+#define TM_FEBRUARY 1
+#define TM_MARCH	2
+#define TM_APRIL	3
+#define TM_MAY		4
+#define TM_JUNE		5
+#define TM_JULY		6
+#define TM_AUGUST	7
+#define TM_SEPTEMBER	8
+#define TM_OCTOBER	9
+#define TM_NOVEMBER 10
+#define TM_DECEMBER 11
+
+#define TM_YEAR_BASE	1900
+
+#define EPOCH_YEAR	1970
+#define EPOCH_WDAY	TM_THURSDAY
+
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+
+/*
+ * Since everything in isleap is modulo 400 (or a factor of 400), we know that
+ *	isleap(y) == isleap(y % 400)
+ * and so
+ *	isleap(a + b) == isleap((a + b) % 400)
+ * or
+ *	isleap(a + b) == isleap(a % 400 + b % 400)
+ * This is true even if % means modulo rather than Fortran remainder
+ * (which is allowed by C89 but not by C99 or later).
+ * We use this to avoid addition overflow problems.
+ */
+
+#define isleap_sum(a, b)	isleap((a) % 400 + (b) % 400)
+
+
+/*
+ * The Gregorian year averages 365.2425 days, which is 31556952 seconds.
+ */
+
+#define AVGSECSPERYEAR		31556952L
+#define SECSPERREPEAT \
+  ((int64) YEARSPERREPEAT * (int64) AVGSECSPERYEAR)
+#define SECSPERREPEAT_BITS	34	/* ceil(log2(SECSPERREPEAT)) */
+
+#endif							/* !defined PRIVATE_H */