diff options
| -rw-r--r-- | regress/sys/kern/signal/fpsig/fpsig.c | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/regress/sys/kern/signal/fpsig/fpsig.c b/regress/sys/kern/signal/fpsig/fpsig.c index ae4e368e0d8..5830ab10b91 100644 --- a/regress/sys/kern/signal/fpsig/fpsig.c +++ b/regress/sys/kern/signal/fpsig/fpsig.c @@ -1,4 +1,4 @@ -/* $OpenBSD: fpsig.c,v 1.2 2005/07/15 07:28:33 otto Exp $ */ +/* $OpenBSD: fpsig.c,v 1.3 2022/10/25 19:55:31 miod Exp $ */ /* * Public domain. 2005, Otto Moerbeek @@ -11,8 +11,9 @@ #include <err.h> #include <signal.h> #include <unistd.h> +#include <sys/time.h> -#define LIMIT 10.0 +#define LIMIT 11.1 volatile sig_atomic_t count; @@ -24,10 +25,8 @@ handler(int signo) { double a, b, c = 0.0; - if (signo) - alarm(1); - for (a = 0.0; a < LIMIT; a++) - for (b = 0.0; b < LIMIT; b++) + for (a = 0.0; a < LIMIT; a += 1.1) + for (b = 0.0; b < LIMIT; b += 1.1) c += a * a + b * b; if (signo) { @@ -40,14 +39,30 @@ handler(int signo) int main() { - signal(SIGALRM, handler); + struct itimerval it = { + .it_interval = { .tv_sec = 0, .tv_usec = 10000 }, + .it_value = { .tv_sec = 0, .tv_usec = 10000 } + }; + /* initialize global vars */ handler(0); handler(1); + + signal(SIGALRM, handler); + setitimer(ITIMER_REAL, &it, NULL); - while (count < 10) { + while (count < 10000) { handler(0); - if (g1 != g2) + double a, b, h1 = g1, h2 = g2; + + for (a = 0.0; a < LIMIT; a += 1.1) + for (b = 0.0; b < LIMIT; b += 1.1) + h1 += a * a + b * b; + for (a = 0.0; a < LIMIT; a += 1.1) + for (b = 0.0; b < LIMIT; b += 1.1) + h2 += a * a + b * b; + + if (h1 != h2) errx(1, "%f %f", g1, g2); } return (0); |