aboutsummaryrefslogtreecommitdiffstats
path: root/sumtimespec.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--sumtimespec.c79
1 files changed, 77 insertions, 2 deletions
diff --git a/sumtimespec.c b/sumtimespec.c
index c4bf68c..a359971 100644
--- a/sumtimespec.c
+++ b/sumtimespec.c
@@ -1,9 +1,10 @@
/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
+#ifndef TEST
int
-libsimple_sumtimespec(struct timespec *sum, const struct timespec *augend, const struct timespec *addend) /* TODO test */
+libsimple_sumtimespec(struct timespec *sum, const struct timespec *augend, const struct timespec *addend)
{
long int ns = augend->tv_nsec + addend->tv_nsec;
time_t s;
@@ -16,7 +17,7 @@ libsimple_sumtimespec(struct timespec *sum, const struct timespec *augend, const
ns = 999999999L;
errno = ERANGE;
ret = -1;
- } else if (augend->tv_sec < 0 && augend->tv_sec + addend->tv_sec < TIME_MIN) {
+ } else if (augend->tv_sec < 0 && augend->tv_sec < TIME_MIN - addend->tv_sec) {
s = TIME_MIN;
ns = 0;
errno = ERANGE;
@@ -48,3 +49,77 @@ libsimple_sumtimespec(struct timespec *sum, const struct timespec *augend, const
sum->tv_nsec = ns;
return ret;
}
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+ struct timespec r, a, b;
+
+ a.tv_sec = 0, a.tv_nsec = 0;
+ b.tv_sec = 0, b.tv_nsec = 0;
+ assert(!libsimple_sumtimespec(&r, &a, &b));
+ assert(r.tv_sec == 0);
+ assert(r.tv_nsec == 0);
+
+ a.tv_sec = 10, a.tv_nsec = 10000L;
+ b.tv_sec = 0, b.tv_nsec = 0L;
+ assert(!libsimple_sumtimespec(&r, &a, &b));
+ assert(r.tv_sec == 10);
+ assert(r.tv_nsec == 10000L);
+
+ a.tv_sec = 10, a.tv_nsec = 10000L;
+ b.tv_sec = -10, b.tv_nsec = 0L;
+ assert(!libsimple_sumtimespec(&r, &a, &b));
+ assert(r.tv_sec == 0);
+ assert(r.tv_nsec == 10000L);
+
+ a.tv_sec = 10, a.tv_nsec = 10000L;
+ b.tv_sec = -20, b.tv_nsec = 20000L;
+ assert(!libsimple_sumtimespec(&r, &a, &b));
+ assert(r.tv_sec == -10);
+ assert(r.tv_nsec == 30000L);
+
+ a.tv_sec = 1, a.tv_nsec = 999999999L;
+ b.tv_sec = 1, b.tv_nsec = 1L;
+ assert(!libsimple_sumtimespec(&r, &a, &b));
+ assert(r.tv_sec == 3);
+ assert(r.tv_nsec == 0L);
+
+ a.tv_sec = TIME_MAX, a.tv_nsec = 0L;
+ b.tv_sec = TIME_MAX, b.tv_nsec = 0L;
+ assert(libsimple_sumtimespec(&r, &a, &b) == -1);
+ assert(r.tv_sec == TIME_MAX);
+ assert(r.tv_nsec == 999999999L);
+
+ a.tv_sec = TIME_MAX, a.tv_nsec = 999999999L;
+ b.tv_sec = 0, b.tv_nsec = 1L;
+ assert(libsimple_sumtimespec(&r, &a, &b) == -1);
+ assert(r.tv_sec == TIME_MAX);
+ assert(r.tv_nsec == 999999999L);
+
+ a.tv_sec = TIME_MAX, a.tv_nsec = 1L;
+ b.tv_sec = 0, b.tv_nsec = 999999999L;
+ assert(libsimple_sumtimespec(&r, &a, &b) == -1);
+ assert(r.tv_sec == TIME_MAX);
+ assert(r.tv_nsec == 999999999L);
+
+ a.tv_sec = TIME_MIN, a.tv_nsec = 0L;
+ b.tv_sec = TIME_MIN, b.tv_nsec = 0L;
+ assert(libsimple_sumtimespec(&r, &a, &b) == -1);
+ assert(r.tv_sec == TIME_MIN);
+ assert(r.tv_nsec == 0L);
+
+ a.tv_sec = TIME_MIN, a.tv_nsec = 100L;
+ b.tv_sec = TIME_MIN, b.tv_nsec = 100L;
+ assert(libsimple_sumtimespec(&r, &a, &b) == -1);
+ assert(r.tv_sec == TIME_MIN);
+ assert(r.tv_nsec == 0L);
+
+ return 0;
+}
+
+#endif