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.Dd February 6, 1999 .Dt A64L 3 .Os .Sh NAME .Nm a64l , .Nm l64a , .Nm l64a_r .Nd "convert between a long integer and a base-64 ASCII string" .Sh LIBRARY .Lb libc .Sh SYNOPSIS n stdlib.h .Ft long .Fn a64l "const char *s" .Ft char * .Fn l64a "long int l" .Ft int .Fn l64a_r "long int l" "char *buffer" "int buflen" .Sh DESCRIPTION The .Fn a64l and .Fn l64a functions convert between a long integer and its base-64 ASCII string representation.
p The characters used to represent ``digits'' are `.' for 0, `/' for 1, `0' - `9' for 2 - 11, `A' - `Z' for 12 - 37, and `a' - `z' for 38 - 63.
p .Fn a64l takes a pointer to a NUL-terminated base-64 ASCII string representation, .Fa s , and returns the corresponding long integer value.
p .Fn l64a takes a long integer value, .Fa l , and returns a pointer to the corresponding NUL-terminated base-64 ASCII string representation.
p .Fn l64a_r performs a conversion identical to that of .Fn l64a and stores the resulting representation in the memory area pointed to by .Fa buffer , consuming at most .Fa buflen characters including the terminating NUL character. .Sh RETURN VALUES On successful completion, .Fn a64l returns the long integer value corresponding to the input string. If the string pointed to by .Fa s is an empty string, .Fn a64l returns a value of 0L.
p .Fn l64a returns a pointer to the base-64 ASCII string representation corresponding to the input value. If .Fa l is 0L, .Fn l64a returns a pointer to an empty string.
p On successful completion, .Fn l64a_r returns 0; if .Fa buffer is of insufficient length, -1 is returned. .Sh SEE ALSO .Xr strtol 3 .Sh STANDARDS The .Fn a64l and .Fn l64a functions conform to .St -xpg4.2 . The .Fn l64a_r function conforms to .St -svid4 , Multithreading Extension. .Sh BUGS The .Fn l64a function is not reentrant. The value returned by it points into a static buffer area; subsequent calls to .Fn la64a may overwrite this buffer. In multi-threaded applications, .Fn l64a_r should be used instead.