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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2015-01-09 01:00:59 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2015-01-09 01:00:59 +0000 |
| commit | 1c032ec5855551c44b88f94fc35fa87db4279f0a (patch) | |
| tree | 4aabf428c1346f01dbb65d726450d18add172603 /src/libstddjb/tain_sub.c | |
| parent | c2b04f3c900553ce385203b54e351df0e79449e1 (diff) | |
| download | skalibs-1c032ec5855551c44b88f94fc35fa87db4279f0a.tar.xz | |
tai conversion functions overhaul.
API change -> rc for 2.2.0.0
Doc updated.
Diffstat (limited to 'src/libstddjb/tain_sub.c')
| -rw-r--r-- | src/libstddjb/tain_sub.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/libstddjb/tain_sub.c b/src/libstddjb/tain_sub.c index f7dd4eb..2921aa6 100644 --- a/src/libstddjb/tain_sub.c +++ b/src/libstddjb/tain_sub.c @@ -2,14 +2,16 @@ #include <skalibs/tai.h> -void tain_sub (tain_t *t, tain_t const *u, tain_t const *v) +int tain_sub (tain_t *t, tain_t const *u, tain_t const *v) { - tain_t uu = *u ; - tai_sub(&t->sec, &uu.sec, &v->sec) ; - t->nano = uu.nano - v->nano ; - if (t->nano > uu.nano) + tain_t tt = *u ; + if (!tai_sub(&tt.sec, &u->sec, &v->sec)) return 0 ; + tt.nano = u->nano - v->nano ; + if (tt.nano > u->nano) { - t->nano += 1000000000U ; - tai_u64(&t->sec, tai_sec(&t->sec)-1) ; + if (!tai_u64(&tt.sec, tai_sec(&tt.sec) - 1)) return 0 ; + tt.nano += 1000000000U ; } + *t = tt ; + return 1 ; } |