a752c7ab
 elopes
add first test an...
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/*
* Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
*
* @file
*/
#include <stdint.h>
#include "timex.h"
#define RADIX (10)
static unsigned int u32_to_str(char *str, uint32_t u32)
{
int len;
int i = 0;
if (u32 == 0) {
str[i] = '0';
return 1;
}
for (; u32 > 0; u32 /= RADIX) {
char digit = (char)(u32 % RADIX);
str[i++] = '0' + digit;
}
len = i;
i--; /* go back to last character */
for (int j = 0; j < i; j++, i--) {
char tmp = str[i];
str[i] = str[j];
str[j] = tmp;
}
return len;
}
const char *timex_to_str(timex_t t, char *timestamp)
{
timex_normalize(&t);
char *dec;
uint8_t offset = 6;
/* get seconds and set terminating '\0' byte */
dec = ×tamp[u32_to_str(timestamp, t.seconds)];
*(dec++) = '.'; /* set decimal point */
for (uint32_t i = 100000; i > 1; i /= 10) { /* timex_normalize() ensures that i < 1000000 */
if (t.microseconds < i) { /* pad with 0's */
*(dec++) = '0';
offset--;
}
}
u32_to_str(dec, t.microseconds); /* convert microseconds */
dec += offset;
*(dec++) = ' '; /* append unit */
*(dec++) = 's';
*(dec) = '\0';
return timestamp;
}
/** @} */
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