|A64L(3P)||POSIX Programmer's Manual||A64L(3P)|
long a64l(const char *s); char *l64a(long value);
The characters used to represent digits are '.' (dot) for 0, '/' for 1, '0' through '9' for [2,11], 'A' through 'Z' for [12,37], and 'a' through 'z' for [38,63].
The a64l() function shall take a pointer to a radix-64 representation, in which the first digit is the least significant, and return the corresponding long value. If the string pointed to by s contains more than six characters, a64l() shall use the first six. If the first six characters of the string contain a null terminator, a64l() shall use only characters preceding the null terminator. The a64l() function shall scan the character string from left to right with the least significant digit on the left, decoding each character as a 6-bit radix-64 number. If the type long contains more than 32 bits, the resulting value is sign-extended. The behavior of a64l() is unspecified if s is a null pointer or the string pointed to by s was not generated by a previous call to l64a().
The l64a() function shall take a long argument and return a pointer to the corresponding radix-64 representation. The behavior of l64a() is unspecified if value is negative.
The value returned by l64a() may be a pointer into a static buffer. Subsequent calls to l64a() may overwrite the buffer.
The l64a() function need not be thread-safe.
The l64a() function shall return a pointer to the radix-64 representation. If value is 0L, l64a() shall return a pointer to an empty string.
The following sections are informative.
The Base Definitions volume of POSIX.1‐2017, <stdlib.h>
The Shell and Utilities volume of POSIX.1‐2017, uuencode
Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html .
|2017||IEEE/The Open Group|