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/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
char *
libsimple_timespectostr(char *restrict buf, const struct timespec *restrict ts)
{
time_t s = ts->tv_sec;
long int ns = ts->tv_nsec;
char sign[2] = "+";
if (!buf) {
buf = malloc(INTSTRLEN(time_t) + sizeof("-.999999999"));
if (!buf)
return NULL;
}
if (ts->tv_nsec < 0 || ts->tv_nsec >= 1000000000L) {
errno = EINVAL;
return NULL;
}
if (s == TIME_MIN && !ns) {
sprintf(buf, "%lli.000000000", (long long int)s);
return buf;
}
if (s < 0) {
s = -s;
*sign = '-';
if (ns) {
s -= 1;
ns = 1000000000L - ns;
}
}
sprintf(buf, "%s%lli.%09li", sign, (long long int)s, ns);
return buf;
}
#else
#include "test.h"
int
main(void)
{
char buf[1000];
/* Mostly tested in libsimple.c */
errno = 0;
assert(!libsimple_timespectostr(buf, &(struct timespec){.tv_sec = 0, .tv_nsec = -1}) && errno == EINVAL);
errno = 0;
assert(!libsimple_timespectostr(buf, &(struct timespec){.tv_sec = 0, .tv_nsec = -2}) && errno == EINVAL);
errno = 0;
assert(!libsimple_timespectostr(buf, &(struct timespec){.tv_sec = 0, .tv_nsec = 1000000000L}) && errno == EINVAL);
errno = 0;
assert(!libsimple_timespectostr(buf, &(struct timespec){.tv_sec = 0, .tv_nsec = 1000000001L}) && errno == EINVAL);
return 0;
}
#endif
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