gbdk-2020 | GameBoy Development Kit |
| download: https://git.y1.nz/archives/gbdk.tar.gz | |
| README | Files | Log | Refs | LICENSE |
gbdk-lib/libc/strncpy.c
1 #include <string.h>
2
3 /*
4 * Copy s2 to s1, truncating or null-padding to always copy n bytes.
5 * Return s1.
6 */
7
8 char *strncpy(char *s1, const char *s2, int n) {
9 int i;
10 char *os1 = s1;
11 for (i = 0; i < n; i++) {
12 if ((*s1++ = *s2++) == '\0') {
13 while (++i < n) *s1++ = '\0';
14 return os1;
15 }
16 }
17 return os1;
18 }
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