projects / thirdparty / man-pages.git / blame
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1 | .\" Hey Emacs! This file is -*- nroff -*- source. |
| 2 | .\" | |
| 3 | .\" Copyright (c) 1993 Michael Haardt | |
| 4 | .\" (michael@moria.de) | |
| 5 | .\" Fri Apr 2 11:32:09 MET DST 1993 | |
| 6 | .\" | |
| 7 | .\" This is free documentation; you can redistribute it and/or | |
| 8 | .\" modify it under the terms of the GNU General Public License as | |
| 9 | .\" published by the Free Software Foundation; either version 2 of | |
| 10 | .\" the License, or (at your option) any later version. | |
| 11 | .\" | |
| 12 | .\" The GNU General Public License's references to "object code" | |
| 13 | .\" and "executables" are to be interpreted as the output of any | |
| 14 | .\" document formatting or typesetting system, including | |
| 15 | .\" intermediate and printed output. | |
| 16 | .\" | |
| 17 | .\" This manual is distributed in the hope that it will be useful, | |
| 18 | .\" but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 | .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 20 | .\" GNU General Public License for more details. | |
| 21 | .\" | |
| 22 | .\" You should have received a copy of the GNU General Public | |
| 23 | .\" License along with this manual; if not, write to the Free | |
| 24 | .\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, | |
| 25 | .\" USA. | |
| 26 | .\" | |
| 27 | .\" Modified Sat Jul 24 14:23:14 1993 by Rik Faith (faith@cs.unc.edu) | |
| 28 | .\" Modified Sun Oct 18 17:31:43 1998 by Andries Brouwer (aeb@cwi.nl) | |
| 29 | .\" | |
| 30 | .TH FTIME 3 2001-12-14 "Linux" "Linux Programmer's Manual" | |
| 31 | .SH NAME | |
| 32 | ftime \- return date and time | |
| 33 | .SH SYNOPSIS | |
| 34 | .B "#include <sys/timeb.h>" | |
| 35 | .sp | |
| 36 | .BI "int ftime(struct timeb *" tp ); | |
| 37 | .SH DESCRIPTION | |
| 38 | Return current date and time in | |
| 39 | .IR tp , | |
| 40 | which is declared as follows: | |
| 41 | .sp | |
| 42 | .in +1i | |
| 43 | .nf | |
| 44 | struct timeb { | |
| 45 | time_t time; | |
| 46 | unsigned short millitm; | |
| 47 | short timezone; | |
| 48 | short dstflag; | |
| 49 | }; | |
| 50 | .fi | |
| 51 | .in -1i | |
| 52 | .LP | |
| 53 | Here \fItime\fP is the number of seconds since the epoch, | |
| 54 | \fImillitm\fP is the number of milliseconds since \fItime\fP | |
| 55 | seconds since the epoch, \fItimezone\fP is the local time zone | |
| 56 | measured in minutes of time west of Greenwich, and \fIdstflag\fP | |
| f59a3f19 | 57 | is a flag that, if non-zero, indicates that Daylight Saving time |
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58 | applies locally during the appropriate part of the year. |
| 59 | .LP | |
| 60 | These days the contents of the \fItimezone\fP and \fIdstflag\fP | |
| 61 | fields are undefined. | |
| 62 | .SH "RETURN VALUE" | |
| 63 | This function always returns 0. | |
| 64 | .SH BUGS | |
| 65 | This function is obsolete. Don't use it. If the time in seconds | |
| 66 | suffices, | |
| 67 | .BR time (2) | |
| 68 | can be used; | |
| 69 | .BR gettimeofday (2) | |
| 70 | gives microseconds; | |
| 71 | .BR clock_gettime (3) | |
| 72 | gives nanoseconds but is not yet widely available. | |
| 73 | .LP | |
| 74 | Under libc4 and libc5 the \fImillitm\fP field is meaningful. | |
| 75 | But early glibc2 is buggy and returns 0 there; | |
| 76 | glibc 2.1.1 is correct again. | |
| 77 | .SH HISTORY | |
| 78 | The | |
| 79 | .B ftime() | |
| 80 | function appeared in 4.2BSD. | |
| 81 | .SH "CONFORMING TO" | |
| b14d4aa5 | 82 | 4.2BSD, POSIX 1003.1-2001. |
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83 | .SH "SEE ALSO" |
| 84 | .BR gettimeofday (2), | |
| 85 | .BR time (2) |