1 /* 2 * Written by J.T. Conklin <jtc@NetBSD.org>. 3 * Public domain. 4 */ 5 6 #if 0 7 #if defined(LIBC_SCCS) && !defined(lint) 8 __RCSID("$NetBSD: l64a.c,v 1.13 2003/07/26 19:24:54 salo Exp $"); 9 #endif /* not lint */ 10 #endif 11 12 #include <sys/cdefs.h> 13 __FBSDID("$FreeBSD$"); 14 15 #include <stdint.h> 16 #include <stdlib.h> 17 18 char * 19 l64a(long value) 20 { 21 static char buf[7]; 22 23 (void)l64a_r(value, buf, sizeof(buf)); 24 return (buf); 25 } 26 27 int 28 l64a_r(long value, char *buffer, int buflen) 29 { 30 static const char chars[] = 31 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; 32 uint32_t v; 33 34 v = value; 35 while (buflen-- > 0) { 36 if (v == 0) { 37 *buffer = '\0'; 38 return (0); 39 } 40 *buffer++ = chars[v & 0x3f]; 41 v >>= 6; 42 } 43 return (-1); 44 } 45