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Diffstat (limited to 'manual/time.texi')
| -rw-r--r-- | manual/time.texi | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/manual/time.texi b/manual/time.texi index b67ef63d5e..f38c2eb87c 100644 --- a/manual/time.texi +++ b/manual/time.texi @@ -531,6 +531,10 @@ might be overwritten by subsequent calls to @code{ctime}, @code{gmtime}, or @code{localtime}. (But no other library function overwrites the contents of this object.) +The return value is the null pointer if @var{time} cannot be represented +as a broken-down time; typically this is because the year cannot fit into +an @code{int}. + Calling @code{localtime} has one other effect: it sets the variable @code{tzname} with information about the current time zone. @xref{Time Zone Functions}. @@ -784,6 +788,18 @@ The day of the month like with @code{%d}, but padded with blank (range This format is a POSIX.2 extension. +@item %f +The day of the week as a decimal number (range @code{1} through +@code{7}), Monday being @code{1}. + +This format is a @w{ISO C 9X} extension. + +@item %F +The date using the format @code{%Y-%m-%d}. This is the form specified +in the @w{ISO 8601} standard and is the preferred form for all uses. + +This format is a @w{ISO C 9X} extension. + @item %g The year corresponding to the ISO week number, but without the century (range @code{00} through @code{99}). This has the same format and value |