5b88a3815
Rob Landley
2006-07-10
Subject
Add itoa and utoa to see what Denis Vlasenko thinks.
SOURCE BUG
This commit was genuinely broken at the time (not related to our build system): scripts/config/mkconfigs.c (2005-08-01 - 2006-10-05 arasi) uretilen bbconfigopts.h icine .config satirlarini kacissiz, ham newline'larla gömüyordu - gecerli C degildi, busybox'un kendi bb_mkdep araci bile parse edemiyordu (7d219aab7 ile duzeltildi, mkconfigs shell scripte cevrildi)
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Commit Diff GitHub →
libbb/xfuncs.c+50 -1
| @@ -229,4 +229,53 @@ int wait4pid(int pid) | |
| if (WIFSIGNALED(status)) return WTERMSIG(status); | |
| return 0; | |
| } | |
| - | #endif |
| + | #endif |
| + | |
| + | #ifdef L_itoa |
| + | // Largest 32 bit integer is -2 billion plus null terminator. |
| + | // Int should always be 32 bits on a Unix-oid system, see |
| + | // http://www.unix.org/whitepapers/64bit.html |
| + | static char local_buf[12]; |
| + | |
| + | void utoa_to_buf(unsigned n, char *buf, int buflen) |
| + | { |
| + | int i, out = 0; |
| + | for (i=1000000000; i; i/=10) { |
| + | int res = n/i; |
| + | |
| + | if (res || out || i == 1) { |
| + | out++; |
| + | n -= res*i; |
| + | *buf++ = '0' + res; |
| + | } |
| + | } |
| + | *buf = 0; |
| + | } |
| + | |
| + | // Note: uses static buffer, calling it twice in a row will overwrite. |
| + | |
| + | char *utoa(unsigned n) |
| + | { |
| + | utoa_to_buf(n, local_buf, sizeof(local_buf)); |
| + | |
| + | return local_buf; |
| + | } |
| + | |
| + | void itoa_to_buf(int n, char *buf, int buflen) |
| + | { |
| + | if (n<0) { |
| + | n = -n; |
| + | *buf++ = '-'; |
| + | } |
| + | utoa_to_buf((unsigned)n, buf, buflen); |
| + | } |
| + | |
| + | // Note: uses static buffer, calling it twice in a row will overwrite. |
| + | |
| + | char *itoa(int n) |
| + | { |
| + | itoa_to_buf(n, local_buf, sizeof(local_buf)); |
| + | |
| + | return local_buf; |
| + | } |
| + | #endif |