AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-21 12:30:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Minor code improvement to timespec_subtract example

Browse Source 
This saves a few instructions.
BORROW cannot be -1, since NSEC_DIFF is at most 999999999.
Idea taken from Gnulib, here:
https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=fe33f943054b93af8b965ce6564b8713b0979a21
This commit is contained in:
Paul Eggert 2024-06-15 08:40:41 -07:00
parent ee768a30fe
commit 7c1ec1b7d0
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
manual/examples/timespec_subtract.c
View File

@ -22,12 +22,12 @@
bool
timespec_subtract (struct timespec *r,
struct timespec x, struct timespec y)
struct timespec x, struct timespec y)
{
/* Compute nanoseconds, setting @var{borrow} to 1, 0, or -1
/* Compute nanoseconds, setting @var{borrow} to 1 or 0
for propagation into seconds. */
long int nsec_diff = x.tv_nsec - y.tv_nsec;
int borrow = (nsec_diff < 0) - ! (nsec_diff < 1000000000);
bool borrow = nsec_diff < 0;
r->tv_nsec = nsec_diff + 1000000000 * borrow;
/* Compute seconds, returning true if this overflows. */