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tzset: Clean up preprocessor macros min, max, sign

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This commit is contained in:
Florian Weimer 2017-03-07 10:39:00 +01:00
parent 8492c4dd69
commit 6e3b52292a
2 changed files with 15 additions and 7 deletions
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8
ChangeLog
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@ -1,3 +1,10 @@
2017-03-07 Florian Weimer <fweimer@redhat.com>
* time/tzset.c (compute_offset): Open-code min macro.
(min, max, sign): Remove.
2017-03-07 Florian Weimer <fweimer@redhat.com>
2017-03-07 Florian Weimer <fweimer@redhat.com>
[BZ #15576]
@ -12,6 +19,7 @@
(tzset_internal): Remove argument.
(__tzset): Adjust call to tzset_internal.
(__tz_convert): Likewise.
* posix/sysconf.c (__sysconf): Return -1 for _SC_TZNAME_MAX.
* sysdeps/posix/sysconf.c (__sysconf): Likewise.
* manual/conf.texi (Sysconf Definition): Update comment.

14
time/tzset.c
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@ -38,12 +38,6 @@ weak_alias (__timezone, timezone)
/* This locks all the state variables in tzfile.c and this file. */
__libc_lock_define_initialized (static, tzset_lock)
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
#define sign(x) ((x) < 0 ? -1 : 1)
/* This structure contains all the information about a
timezone given in the POSIX standard TZ envariable. */
typedef struct
@ -142,7 +136,13 @@ update_vars (void)
static unsigned int
compute_offset (unsigned int ss, unsigned int mm, unsigned int hh)
{
return min (ss, 59) + min (mm, 59) * 60 + min (hh, 24) * 60 * 60;
if (ss > 59)
ss = 59;
if (mm > 59)
mm = 59;
if (hh > 24)
hh = 24;
return ss + mm * 60 + hh * 60 * 60;
}
/* Parses the time zone name at *TZP, and writes a pointer to an