lib/libc/stdtime/private.h

   1 /*
   2  * @(#)private.h        8.6
   3  * $FreeBSD: src/lib/libc/stdtime/private.h,v 1.6.8.1 2000/08/23 00:19:15 jhb Exp $
   4  * $DragonFly: src/lib/libc/stdtime/private.h,v 1.3 2008/10/19 20:15:58 swildner Exp $
   5  */
   6
   7 #ifndef PRIVATE_H
   8
   9 #define PRIVATE_H
  10 /*
  11 ** This file is in the public domain, so clarified as of
  12 ** 1996-06-05 by Arthur David Olson.
  13 */
  14
  15 /* Stuff moved from Makefile.inc to reduce clutter */
  16 #ifndef TM_GMTOFF
  17 #define TM_GMTOFF       tm_gmtoff
  18 #define TM_ZONE         tm_zone
  19 #define TZDIR           "/usr/share/zoneinfo"
  20 #endif /* ndef TM_GMTOFF */
  21
  22 /*
  23 ** This header is for use ONLY with the time conversion code.
  24 ** There is no guarantee that it will remain unchanged,
  25 ** or that it will remain at all.
  26 ** Do NOT copy it to any system include directory.
  27 ** Thank you!
  28 */
  29
  30 #define GRANDPARENTED   "Local time zone must be set--see zic manual page"
  31
  32 /*
  33 ** Nested includes
  34 */
  35
  36 #include "sys/types.h"  /* for time_t */
  37 #include "stdio.h"
  38 #include "errno.h"
  39 #include "string.h"
  40 #include "limits.h"     /* for CHAR_BIT et al. */
  41 #include "time.h"
  42 #include "stdlib.h"
  43
  44 #include <sys/wait.h>   /* for WIFEXITED and WEXITSTATUS */
  45
  46 #include "unistd.h"     /* for F_OK, R_OK, and other POSIX goodness */
  47
  48 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
  49 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
  50
  51 #include "stdint.h"
  52
  53 /*
  54 ** Private function declarations.
  55 */
  56
  57 char *          icalloc(int nelem, int elsize);
  58 char *          icatalloc(char * old, const char * new);
  59 char *          icpyalloc(const char * string);
  60 char *          imalloc(int n);
  61 void *          irealloc(void * pointer, int size);
  62 void            icfree(char * pointer);
  63 void            ifree(char * pointer);
  64 const char *    scheck(const char * string, const char * format);
  65
  66 /*
  67 ** Finally, some convenience items.
  68 */
  69
  70 #ifndef TRUE
  71 #define TRUE    1
  72 #endif /* !defined TRUE */
  73
  74 #ifndef FALSE
  75 #define FALSE   0
  76 #endif /* !defined FALSE */
  77
  78 #ifndef TYPE_BIT
  79 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
  80 #endif /* !defined TYPE_BIT */
  81
  82 #ifndef TYPE_SIGNED
  83 #define TYPE_SIGNED(type) (((type) -1) < 0)
  84 #endif /* !defined TYPE_SIGNED */
  85
  86 /*
  87 ** Since the definition of TYPE_INTEGRAL contains floating point numbers,
  88 ** it cannot be used in preprocessor directives.
  89 */
  90
  91 #ifndef TYPE_INTEGRAL
  92 #define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
  93 #endif /* !defined TYPE_INTEGRAL */
  94
  95 #ifndef INT_STRLEN_MAXIMUM
  96 /*
  97 ** 302 / 1000 is log10(2.0) rounded up.
  98 ** Subtract one for the sign bit if the type is signed;
  99 ** add one for integer division truncation;
 100 ** add one more for a minus sign if the type is signed.
 101 */
 102 #define INT_STRLEN_MAXIMUM(type) \
 103         ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
 104         1 + TYPE_SIGNED(type))
 105 #endif /* !defined INT_STRLEN_MAXIMUM */
 106
 107 /*
 108 ** INITIALIZE(x)
 109 */
 110
 111 #ifndef GNUC_or_lint
 112 #ifdef lint
 113 #define GNUC_or_lint
 114 #endif /* defined lint */
 115 #ifndef lint
 116 #ifdef __GNUC__
 117 #define GNUC_or_lint
 118 #endif /* defined __GNUC__ */
 119 #endif /* !defined lint */
 120 #endif /* !defined GNUC_or_lint */
 121
 122 #ifndef INITIALIZE
 123 #ifdef GNUC_or_lint
 124 #define INITIALIZE(x)   ((x) = 0)
 125 #endif /* defined GNUC_or_lint */
 126 #ifndef GNUC_or_lint
 127 #define INITIALIZE(x)
 128 #endif /* !defined GNUC_or_lint */
 129 #endif /* !defined INITIALIZE */
 130
 131 /*
 132 ** For the benefit of GNU folk...
 133 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 134 ** The default is to use gettext if available, and use MSGID otherwise.
 135 */
 136
 137 #ifndef _
 138 #define _(msgid) msgid
 139 #endif /* !defined _ */
 140
 141 #ifndef TZ_DOMAIN
 142 #define TZ_DOMAIN "tz"
 143 #endif /* !defined TZ_DOMAIN */
 144
 145 #define YEARSPERREPEAT          400     /* years before a Gregorian repeat */
 146
 147 /*
 148 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
 149 */
 150
 151 #define AVGSECSPERYEAR          31556952L
 152 #define SECSPERREPEAT           ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
 153 #define SECSPERREPEAT_BITS      34      /* ceil(log2(SECSPERREPEAT)) */
 154
 155 /*
 156 ** UNIX was a registered trademark of The Open Group in 2003.
 157 */
 158
 159 #endif /* !defined PRIVATE_H */