67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
#include <stdio.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <inttypes.h>
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#include <sys/time.h>
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#include "cutils.h"
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_Noreturn void GCC_FMT_ATTR (3, 4) err (int exitcode, int errno_val,
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const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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vfprintf (stdout, fmt, ap);
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va_end (ap);
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fprintf (stdout, ": %s\n", strerror (errno_val));
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fflush (stdout);
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_exit (exitcode);
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}
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_Noreturn void GCC_FMT_ATTR (2, 3) errx (int exitcode, const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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vfprintf (stdout, fmt, ap);
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va_end (ap);
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fputc ('\n', stdout);
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fflush (stdout);
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_exit (exitcode);
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}
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void *parse_pointer (const char *cap, const char *s)
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{
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void *ptr;
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int ret = sscanf (s, "%" SCNxPTR, (uintptr_t *) &ptr);
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if (ret != 1) {
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errx (1, "%s: cannot parse pointer in `%s' (ret=%d)", cap, s, ret);
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}
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return ptr;
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}
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double now (void)
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{
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struct timeval tv;
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gettimeofday (&tv, NULL); /* gettimeofday shall always return zero */
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return tv.tv_sec + tv.tv_usec*1e-6;
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}
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void fmt_linkn (char *s, const char *c, unsigned int l, int n)
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{
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div_t d;
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int sl = 0, nn = n;
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do { d = div (n, l); sl++; n = d.quot; } while (d.quot);
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for (int i = 0, n = nn; i < sl; ++i) {
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d = div (n, l);
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s[sl-1-i] = c[d.rem];
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n = d.quot;
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}
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s[sl] = 0;
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}
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