diff options
Diffstat (limited to 'timezone/private.h')
| -rw-r--r-- | timezone/private.h | 182 |
1 files changed, 128 insertions, 54 deletions
diff --git a/timezone/private.h b/timezone/private.h index 1c176e62bc..e2f23f5f40 100644 --- a/timezone/private.h +++ b/timezone/private.h @@ -15,6 +15,7 @@ ** Thank you! */ +/* This string was in the Factory zone through version 2016f. */ #define GRANDPARENTED "Local time zone must be set--see zic manual page" /* @@ -22,6 +23,10 @@ ** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'. */ +#ifndef HAVE_DECL_ASCTIME_R +#define HAVE_DECL_ASCTIME_R 1 +#endif + #ifndef HAVE_GETTEXT #define HAVE_GETTEXT 0 #endif /* !defined HAVE_GETTEXT */ @@ -34,6 +39,10 @@ #define HAVE_LINK 1 #endif /* !defined HAVE_LINK */ +#ifndef HAVE_POSIX_DECLS +#define HAVE_POSIX_DECLS 1 +#endif + #ifndef HAVE_STRDUP #define HAVE_STRDUP 1 #endif @@ -69,9 +78,9 @@ /* Enable tm_gmtoff and tm_zone on GNUish systems. */ #define _GNU_SOURCE 1 -/* Fix asctime_r on Solaris 10. */ +/* Fix asctime_r on Solaris 11. */ #define _POSIX_PTHREAD_SEMANTICS 1 -/* Enable strtoimax on Solaris 10. */ +/* Enable strtoimax on pre-C99 Solaris 11. */ #define __EXTENSIONS__ 1 /* @@ -95,23 +104,26 @@ #undef tzalloc #undef tzfree -#include "sys/types.h" /* for time_t */ -#include "stdio.h" -#include "string.h" -#include "limits.h" /* for CHAR_BIT et al. */ -#include "stdlib.h" +#include <sys/types.h> /* for time_t */ +#include <stdio.h> +#include <string.h> +#include <limits.h> /* for CHAR_BIT et al. */ +#include <stdlib.h> -#include "errno.h" +#include <errno.h> #ifndef ENAMETOOLONG # define ENAMETOOLONG EINVAL #endif +#ifndef ENOTSUP +# define ENOTSUP EINVAL +#endif #ifndef EOVERFLOW # define EOVERFLOW EINVAL #endif #if HAVE_GETTEXT -#include "libintl.h" +#include <libintl.h> #endif /* HAVE_GETTEXT */ #if HAVE_SYS_WAIT_H @@ -126,7 +138,7 @@ #endif /* !defined WEXITSTATUS */ #if HAVE_UNISTD_H -#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ +#include <unistd.h> /* for F_OK, R_OK, and other POSIX goodness */ #endif /* HAVE_UNISTD_H */ #ifndef HAVE_STRFTIME_L @@ -149,19 +161,19 @@ /* ** Define HAVE_STDINT_H's default value here, rather than at the -** start, since __GLIBC__'s value depends on previously-included -** files. -** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) +** start, since __GLIBC__ and INTMAX_MAX's values depend on +** previously-included files. glibc 2.1 and Solaris 10 and later have +** stdint.h, even with pre-C99 compilers. */ #ifndef HAVE_STDINT_H #define HAVE_STDINT_H \ (199901 <= __STDC_VERSION__ \ || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \ - || __CYGWIN__) + || __CYGWIN__ || INTMAX_MAX) #endif /* !defined HAVE_STDINT_H */ #if HAVE_STDINT_H -#include "stdint.h" +#include <stdint.h> #endif /* !HAVE_STDINT_H */ #ifndef HAVE_INTTYPES_H @@ -197,14 +209,18 @@ typedef long int_fast64_t; # endif #endif -#ifndef SCNdFAST64 +#ifndef PRIdFAST64 # if INT_FAST64_MAX == LLONG_MAX -# define SCNdFAST64 "lld" +# define PRIdFAST64 "lld" # else -# define SCNdFAST64 "ld" +# define PRIdFAST64 "ld" # endif #endif +#ifndef SCNdFAST64 +# define SCNdFAST64 PRIdFAST64 +#endif + #ifndef INT_FAST32_MAX # if INT_MAX >> 31 == 0 typedef long int_fast32_t; @@ -304,6 +320,13 @@ typedef unsigned long uintmax_t; ** Workarounds for compilers/systems. */ +#ifndef EPOCH_LOCAL +# define EPOCH_LOCAL 0 +#endif +#ifndef EPOCH_OFFSET +# define EPOCH_OFFSET 0 +#endif + /* ** Compile with -Dtime_tz=T to build the tz package with a private ** time_t type equivalent to T rather than the system-supplied time_t. @@ -311,7 +334,7 @@ typedef unsigned long uintmax_t; ** (e.g., time_t wider than 'long', or unsigned time_t) even on ** typical platforms. */ -#ifdef time_tz +#if defined time_tz || EPOCH_LOCAL || EPOCH_OFFSET != 0 # ifdef LOCALTIME_IMPLEMENTATION static time_t sys_time(time_t *x) { return time(x); } # endif @@ -379,25 +402,21 @@ time_t time(time_t *); void tzset(void); #endif -/* -** Some time.h implementations don't declare asctime_r. -** Others might define it as a macro. -** Fix the former without affecting the latter. -** Similarly for timezone, daylight, and altzone. -*/ - -#ifndef asctime_r -extern char * asctime_r(struct tm const *restrict, char *restrict); +#if !HAVE_DECL_ASCTIME_R && !defined asctime_r +extern char *asctime_r(struct tm const *restrict, char *restrict); #endif -#ifdef USG_COMPAT -# ifndef timezone +#if !HAVE_POSIX_DECLS +# ifdef USG_COMPAT +# ifndef timezone extern long timezone; -# endif -# ifndef daylight +# endif +# ifndef daylight extern int daylight; +# endif # endif #endif + #if defined ALTZONE && !defined altzone extern long altzone; #endif @@ -481,14 +500,8 @@ time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; # include <stdbool.h> #endif -#ifndef TYPE_BIT #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) -#endif /* !defined TYPE_BIT */ - -#ifndef TYPE_SIGNED #define TYPE_SIGNED(type) (((type) -1) < 0) -#endif /* !defined TYPE_SIGNED */ - #define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0) /* Max and min values of the integer type T, of which only the bottom @@ -500,11 +513,29 @@ time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE; #define MINVAL(t, b) \ ((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0)) -/* The minimum and maximum finite time values. This assumes no padding. */ +/* The minimum and maximum finite time values. This implementation + assumes no padding if time_t is signed and either the compiler is + pre-C11 or time_t is not one of the standard signed integer types. */ +#if 201112 <= __STDC_VERSION__ +static time_t const time_t_min + = (TYPE_SIGNED(time_t) + ? _Generic((time_t) 0, + signed char: SCHAR_MIN, short: SHRT_MIN, + int: INT_MIN, long: LONG_MIN, long long: LLONG_MIN, + default: MINVAL(time_t, TYPE_BIT(time_t))) + : 0); +static time_t const time_t_max + = (TYPE_SIGNED(time_t) + ? _Generic((time_t) 0, + signed char: SCHAR_MAX, short: SHRT_MAX, + int: INT_MAX, long: LONG_MAX, long long: LLONG_MAX, + default: MAXVAL(time_t, TYPE_BIT(time_t))) + : -1); +#else static time_t const time_t_min = MINVAL(time_t, TYPE_BIT(time_t)); static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t)); +#endif -#ifndef INT_STRLEN_MAXIMUM /* ** 302 / 1000 is log10(2.0) rounded up. ** Subtract one for the sign bit if the type is signed; @@ -514,7 +545,6 @@ static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t)); #define INT_STRLEN_MAXIMUM(type) \ ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 1 + TYPE_SIGNED(type)) -#endif /* !defined INT_STRLEN_MAXIMUM */ /* ** INITIALIZE(x) @@ -536,13 +566,11 @@ static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t)); ** The default is to use gettext if available, and use MSGID otherwise. */ -#ifndef _ #if HAVE_GETTEXT #define _(msgid) gettext(msgid) #else /* !HAVE_GETTEXT */ #define _(msgid) msgid #endif /* !HAVE_GETTEXT */ -#endif /* !defined _ */ #if !defined TZ_DOMAIN && defined HAVE_GETTEXT # define TZ_DOMAIN "tz" @@ -555,24 +583,70 @@ char *asctime_r(struct tm const *, char *); char *ctime_r(time_t const *, char *); #endif /* HAVE_INCOMPATIBLE_CTIME_R */ -#ifndef YEARSPERREPEAT +/* Handy macros that are independent of tzfile implementation. */ + #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ -#endif /* !defined YEARSPERREPEAT */ + +#define SECSPERMIN 60 +#define MINSPERHOUR 60 +#define HOURSPERDAY 24 +#define DAYSPERWEEK 7 +#define DAYSPERNYEAR 365 +#define DAYSPERLYEAR 366 +#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) +#define SECSPERDAY ((int_fast32_t) 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)) /* -** The Gregorian year averages 365.2425 days, which is 31556952 seconds. +** 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 C99). +** We use this to avoid addition overflow problems. */ -#ifndef AVGSECSPERYEAR -#define AVGSECSPERYEAR 31556952L -#endif /* !defined AVGSECSPERYEAR */ +#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400) + -#ifndef SECSPERREPEAT -#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) -#endif /* !defined SECSPERREPEAT */ +/* +** The Gregorian year averages 365.2425 days, which is 31556952 seconds. +*/ -#ifndef SECSPERREPEAT_BITS +#define AVGSECSPERYEAR 31556952L +#define SECSPERREPEAT \ + ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ -#endif /* !defined SECSPERREPEAT_BITS */ #endif /* !defined PRIVATE_H */ |