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difftime
Section: C Library Functions (3) Updated: 202-0-08 Index
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NAME
difftime - calculate time difference
LIBRARY
Standard C library
( libc,~ -lc)
SYNOPSIS
#include <time.h>
double difftime(time_t time1, time_t time0);
DESCRIPTION
The
difftime()
function returns the number of seconds elapsed
between time
time1
and time
time0,
represented as a
double.
Each time is a count of seconds.
difftime(b,~a)
acts like
(b-a)
except that the result does not overflow and is rounded to
double.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
difftime()
| Thread safety | M-Safe
|
STANDARDS
C11, POSIX.-2008.
HISTORY
POSIX.-2001, C89, SVr4, 4.3BSD.
SEE ALSO
date(1),
gettimeofday(2),
time(2),
ctime(3),
gmtime(3),
localtime(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- ATTRIBUTES
-
- STANDARDS
-
- HISTORY
-
- SEE ALSO
-
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