timeradd - Online Linux Manual PageSection : 3
Updated : 2023-02-05
Source : Linux man-pages 6.03
NAMEtimeradd, timersub, timercmp, timerclear, timerisset − timeval operations
LIBRARYStandard C library (libc, −lc)
SYNOPSIS#include <sys/time.h>void timeradd(struct timeval *a, struct timeval *b,
struct timeval *res);
void timersub(struct timeval *a, struct timeval *b,
struct timeval *res);void timerclear(struct timeval *tvp);
int timerisset(struct timeval *tvp);int timercmp(struct timeval *a, struct timeval *b, CMP);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): All functions shown above: Since glibc 2.19:
_DEFAULT_SOURCE
glibc 2.19 and earlier:
_BSD_SOURCE
DESCRIPTIONThe macros are provided to operate on timeval structures, defined in <sys/time.h> as: struct timeval {
time_t tv_sec; /* seconds */
suseconds_t tv_usec; /* microseconds */
};timeradd() adds the time values in a and b, and places the sum in the timeval pointed to by res. The result is normalized such that res−>tv_usec has a value in the range 0 to 999,999. timersub() subtracts the time value in b from the time value in a, and places the result in the timeval pointed to by res. The result is normalized such that res−>tv_usec has a value in the range 0 to 999,999. timerclear() zeros out the timeval structure pointed to by tvp, so that it represents the Epoch: 1970-01-01 00:00:00 +0000 (UTC). timerisset() returns true (nonzero) if either field of the timeval structure pointed to by tvp contains a nonzero value. timercmp() compares the timer values in a and b using the comparison operator CMP, and returns true (nonzero) or false (0) depending on the result of the comparison. Some systems (but not Linux/glibc), have a broken timercmp() implementation, in which CMP of >=, <=, and == do not work; portable applications can instead use !timercmp(..., <)
!timercmp(..., >)
!timercmp(..., !=)
RETURN VALUEtimerisset() and timercmp() return true (nonzero) or false (0).
ERRORSNo errors are defined.
STANDARDSNot in POSIX.1. Present on most BSD derivatives.
SEE ALSOgettimeofday(2), time(7) 0
Johanes Gumabo
Data Size : 10,145 byte
man-timersub.3Build : 2024-12-05, 20:55 :
Visitor Screen : x
Visitor Counter ( page / site ) : 3 / 239,091
Visitor ID : :
Visitor IP : 3.145.78.12 :
Visitor Provider : AMAZON-02 :
Provider Position ( lat x lon ) : 39.962500 x -83.006100 : x
Provider Accuracy Radius ( km ) : 1000 :
Provider City : Columbus :
Provider Province : Ohio , : ,
Provider Country : United States :
Provider Continent : North America :
Visitor Recorder : Version :
Visitor Recorder : Library :
Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page : Library : lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page : Library : lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base : Version : Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base : Library : lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.