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https://github.com/cc65/cc65.git
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df193c0947
- mktime: Work unsigned as time_t's type implies (shifting Y2K38 bug to 2106) - mktime: Add unit tests - gmtime/localtime: factorize - gmtime/localtime: Add unit tests - mktime/gmtime/localtime: Size optimisation (-130 bytes wrt master) - mktime: Speed optimisation (from 23M cycles on the unit test to 2M)
62 lines
1.2 KiB
C
62 lines
1.2 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <time.h>
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int fails = 0;
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time_t timestamps[] = {
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0,
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0x2FFFFFFF,
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0x6FFFFFFF,
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0xF48656FF,
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0xF4865700,
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0xFC5A3EFF,
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0x6D6739FF,
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0x6D673A00,
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0xFFFFFFFF,
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};
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/* Values checked against glibc 2.37's implementation of ctime() */
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const char *dates[] = {
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"Thu Jan 1 00:00:00 1970\n",
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"Sun Jul 9 16:12:47 1995\n",
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"Wed Jul 18 05:49:51 2029\n",
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"Thu Dec 31 23:59:59 2099\n",
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"Fri Jan 1 00:00:00 2100\n",
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"Fri Feb 29 23:59:59 2104\n",
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"Tue Feb 29 23:59:59 2028\n",
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"Wed Mar 1 00:00:00 2028\n",
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"Sun Feb 7 06:28:15 2106\n",
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NULL
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};
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int main (void)
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{
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struct tm tm;
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time_t t;
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int i;
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/* Verify conversion both ways */
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for (t = 0x0FFFFFFF; ; t += 0x10000000) {
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struct tm *tm = gmtime(&t);
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time_t r = mktime(tm);
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if (t != r) {
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fails++;
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printf("Unexpected result for t %lx: %lx\n", t, r);
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}
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if (t == 0xFFFFFFFF) {
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break;
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}
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}
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for (i = 0; dates[i] != NULL; i++) {
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char *str = ctime(×tamps[i]);
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if (strcmp(str, dates[i])) {
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fails++;
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printf("Unexpected result for t %lx: Expected \"%s\", got \"%s\"\n",
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timestamps[i], dates[i], str);
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}
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}
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return fails;
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}
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