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45 lines
822 B
C
45 lines
822 B
C
/*-
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* Written by J.T. Conklin <jtc@netbsd.org>.
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* Public domain.
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*/
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#if 0
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: a64l.c,v 1.8 2000/01/22 22:19:19 mycroft Exp $");
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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#include <stdlib.h>
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#include <inttypes.h>
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#define ADOT 46 /* ASCII '.' */
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#define ASLASH 47 /* ASCII '/' */
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#define A0 48 /* ASCII '0' */
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#define AA 65 /* ASCII 'A' */
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#define Aa 97 /* ASCII 'a' */
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long
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a64l(const char *s)
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{
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long shift;
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int digit, i, value;
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value = 0;
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shift = 0;
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for (i = 0; *s != '\0' && i < 6; i++, s++) {
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if (*s <= ASLASH)
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digit = *s - ASLASH + 1;
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else if (*s <= A0 + 9)
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digit = *s - A0 + 2;
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else if (*s <= AA + 25)
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digit = *s - AA + 12;
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else
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digit = *s - Aa + 38;
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value |= digit << shift;
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shift += 6;
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}
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return (value);
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}
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