Guardian Native C Library Calls Reference Manual (G06.28+, H06.04+)

Guardian Native C Library Calls (t - z) tzset(3)
External variable daylight is set to nonzero when a daylight-saving time conversion should be
applied. By default, this conversion follows standard U.S. time conventions; other time conven-
tions may be specified. The default conversion algorithm adjusts for peculiarities of U.S.
daylight-saving time in 1974 and 1975.
RETURN VALUES
The tzset() function returns no value.
ERRORS
The tzset() function returns no errors. This function does not set errno.
RELATED INFORMATION
Functions: asctime(3), ctime(3), difftime(3), getenv(3), gmtime(3), localtime(3), mktime(3),
strftime(3), time(3), utime(3).
STANDARDS CONFORMANCE
The timezone and daylight variables are extensions within the XPG4 Version 2 specification.
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