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| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | manual/time.texi | 29 |
2 files changed, 8 insertions, 28 deletions
@@ -1,3 +1,10 @@ +2012-03-02 Roland McGrath <roland@hack.frob.com> + + [BZ #13792] + * manual/time.texi (Elapsed Time): Move timeval_subtract example + function to ... + * manual/timeval_subtract.c.texi: ... here, new file. + 2012-03-02 David S. Miller <davem@davemloft.net> * sysdeps/sparc/fpu/libm-test-ulps: Update for recently added tests. diff --git a/manual/time.texi b/manual/time.texi index 78396f23e0..a2e11a1a9d 100644 --- a/manual/time.texi +++ b/manual/time.texi @@ -139,34 +139,7 @@ this. It works even on some peculiar operating systems where the @code{tv_sec} member has an unsigned type. @smallexample -/* @r{Subtract the `struct timeval' values X and Y,} - @r{storing the result in RESULT.} - @r{Return 1 if the difference is negative, otherwise 0.} */ - -int -timeval_subtract (result, x, y) - struct timeval *result, *x, *y; -@{ - /* @r{Perform the carry for the later subtraction by updating @var{y}.} */ - if (x->tv_usec < y->tv_usec) @{ - int nsec = (y->tv_usec - x->tv_usec) / 1000000 + 1; - y->tv_usec -= 1000000 * nsec; - y->tv_sec += nsec; - @} - if (x->tv_usec - y->tv_usec > 1000000) @{ - int nsec = (x->tv_usec - y->tv_usec) / 1000000; - y->tv_usec += 1000000 * nsec; - y->tv_sec -= nsec; - @} - - /* @r{Compute the time remaining to wait.} - @r{@code{tv_usec} is certainly positive.} */ - result->tv_sec = x->tv_sec - y->tv_sec; - result->tv_usec = x->tv_usec - y->tv_usec; - - /* @r{Return 1 if result is negative.} */ - return x->tv_sec < y->tv_sec; -@} +@include timeval_subtract.c.texi @end smallexample Common functions that use @code{struct timeval} are @code{gettimeofday} |