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57ada0e7e7
C99 specifies that CLOCKS_PER_SEC is an expression with the type clock_t. This patch adds a generic <bits/time2.h> to define CLOCKS_PER_SEC and provides the Linux/x86-64 version of <bits/time2.h> to support x32. [BZ #17797] * bits/time.h (CLOCKS_PER_SEC): Changed to ((clock_t) 1000000). * sysdeps/unix/sysv/linux/bits/time.h (CLOCKS_PER_SEC): Likewise. * sysdeps/unix/sysv/linux/clock.c (clock): _Static_assert CLOCKS_PER_SEC == 1000000. * time/clocktest.c (main): Replace %ld with %jd and cast to intmax_t.
37 lines
671 B
C
37 lines
671 B
C
#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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volatile int gotit = 0;
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static void
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alarm_handler (int signal)
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{
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gotit = 1;
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}
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int
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main (int argc, char ** argv)
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{
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clock_t start, stop;
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if (signal(SIGALRM, alarm_handler) == SIG_ERR)
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{
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perror ("signal");
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exit (1);
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}
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alarm(1);
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start = clock ();
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while (!gotit);
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stop = clock ();
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printf ("%jd clock ticks per second (start=%jd,stop=%jd)\n",
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(intmax_t) (stop - start), (intmax_t) start, (intmax_t) stop);
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printf ("CLOCKS_PER_SEC=%jd, sysconf(_SC_CLK_TCK)=%ld\n",
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(intmax_t) CLOCKS_PER_SEC, sysconf(_SC_CLK_TCK));
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return 0;
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}
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