projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5b2abdfb A |
1 | /* |
| 2 | * Written by J.T. Conklin <jtc@netbsd.org>. | |
| 3 | * Public domain. | |
| 4 | */ | |
| 5 | ||
| 6 | #if defined(LIBC_SCCS) && !defined(lint) | |
| 7 | static char *rcsid = "$OpenBSD: a64l.c,v 1.3 1997/08/17 22:58:34 millert Exp $"; | |
| 8 | #endif /* LIBC_SCCS and not lint */ | |
| 9 | ||
| 10 | #include <errno.h> | |
| 11 | #include <stdlib.h> | |
| 12 | ||
| 13 | long | |
| 14 | a64l(s) | |
| 15 | const char *s; | |
| 16 | { | |
| 224c7076 | 17 | int value, digit, shift; |
| 5b2abdfb A |
18 | int i; |
| 19 | ||
| 20 | if (s == NULL) { | |
| 21 | errno = EINVAL; | |
| 22 | return(-1L); | |
| 23 | } | |
| 24 | ||
| 25 | value = 0; | |
| 26 | shift = 0; | |
| 27 | for (i = 0; *s && i < 6; i++, s++) { | |
| 28 | if (*s >= '.' && *s <= '/') | |
| 29 | digit = *s - '.'; | |
| 30 | else if (*s >= '0' && *s <= '9') | |
| 31 | digit = *s - '0' + 2; | |
| 32 | else if (*s >= 'A' && *s <= 'Z') | |
| 33 | digit = *s - 'A' + 12; | |
| 34 | else if (*s >= 'a' && *s <= 'z') | |
| 35 | digit = *s - 'a' + 38; | |
| 36 | else { | |
| 37 | errno = EINVAL; | |
| 38 | return(-1L); | |
| 39 | } | |
| 40 | ||
| 41 | value |= digit << shift; | |
| 42 | shift += 6; | |
| 43 | } | |
| 44 | ||
| 45 | return(value); | |
| 46 | } | |
| 47 |