.TH ENCODE 2.SH NAMEdec64, enc64, dec32, enc32, dec16, enc16, encodefmt \- encoding byte arrays as strings.SH SYNOPSIS.B #include <u.h>.br.B #include <libc.h>.PP.Bint	dec64(uchar *out, int lim, char *in, int n).PP.Bint	enc64(char *out, int lim, uchar *in, int n).PP.Bint	dec32(uchar *out, int lim, char *in, int n).PP.Bint	enc32(char *out, int lim, uchar *in, int n).PP.Bint	dec16(uchar *out, int lim, char *in, int n).PP.Bint	enc16(char *out, int lim, uchar *in, int n).PP.Bint	encodefmt(Fmt*).SH DESCRIPTION.PP.IR Enc16 ,.I enc32and.I enc64create null terminated strings.  They return the size of theencoded string (without the null) or -1 if the encoding fails.The encoding fails if.IR lim ,the length of the output buffer, is too small..PP.IR Dec16 ,.I dec32and.I dec64return the number of bytes decoded or -1 if the decoding fails.The decoding fails if the output buffer is not large enough or,for base 32, if the input buffer length is not a multipleof 8..PP.I Encodefmtcan be used with.IR fmtinstall (2)and.IR print (2)to print encoded representations of byte arrays.The verbs are.TP.B Hbase 16 (i.e. hexadecimal). The default encoding isin upper case.  The.B lflag forces lower case..TP.B <base 32.TP.B [base 64 (same as MIME).PD.PPThe length of the array is specified as.IR f2 .For example, to display a 15 byte array as hex:.EX     char x[15];     fmtinstall('H', encodefmt);    print("%.*H\\n", sizeof x, x); .EE.SH SOURCE.B /sys/src/libc/port/u32.c.br.B /sys/src/libc/port/u64.c