minix/lib/libc/stdlib/a64l.c

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/*
* Written by J.T. Conklin <jtc@NetBSD.org>.
* Public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: a64l.c,v 1.10 2012/06/08 11:15:26 abs Exp $");
#endif
#include "namespace.h"
#include <assert.h>
#include <stdlib.h>
#ifdef __weak_alias
__weak_alias(a64l,_a64l)
#endif
long
a64l(const char *s)
{
long value, digit, shift;
int i;
_DIAGASSERT(s != NULL);
value = 0;
shift = 0;
for (i = 0; *s && i < 6; i++, s++) {
if (*s <= '/')
digit = *s - '.';
else if (*s <= '9')
digit = *s - '0' + 2;
else if (*s <= 'Z')
digit = *s - 'A' + 12;
else
digit = *s - 'a' + 38;
value |= digit << shift;
shift += 6;
}
return (long) value;
}