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a64l
Converts a base-64 ASCII string to a long integer.
Syntax
long a64l (char s);
Parameters
s A pointer to a null terminated base-64 ASCII string.
Maximum length is 6 bytes; not counting the null
terminator.
Return Values
x A long integer containing the binary value of the base-64
ASCII string.
Description
This function maintains numbers stored in base-64 ASCII characters. Long
integers can be represented by up to six characters. Each character
represents a digit in a radix-64 notation.
The characters used to represent digits are:
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| | |
| Characters | Digits |
| | |
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| | |
| . | 0 |
| | |
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| | |
| / | 1 |
| | |
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| | |
| 0 through 9 | 2 through 11 |
| | |
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| | |
| A through Z | 12 through 37 |
| | |
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| | |
| a through z | 38 through 63 |
| | |
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The leftmost character is the least significant digit. For example:
a0 = (38 x 640) + (2 x 641) = 166
The a64l function is passed a pointer to a null-terminated base-64
representation and returns a corresponding long value. If the string
pointed to by s contains more than six characters, a64l() uses the first
six (leftmost) characters.
See Also
l64a()