25 lines
387 B
C
25 lines
387 B
C
/*
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* convert base 64 ascii to long int
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* char set is [./0-9A-Za-z]
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*
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*/
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#define BITSPERCHAR 6 /* to hold entire character set */
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long
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a64l(s)
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register char *s;
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{
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register int i, c;
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long lg = 0;
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for (i = 0; (c = *s++) != '\0'; i += BITSPERCHAR) {
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if (c > 'Z')
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c -= 'a' - 'Z' - 1;
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if (c > '9')
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c -= 'A' - '9' - 1;
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lg |= (long)(c - ('0' - 2)) << i;
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}
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return (lg);
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}
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