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fmt_asn1derlength(3)  DragonFly Library Functions Manual  fmt_asn1derlength(3)

NAME
       fmt_asn1derlength - encode unsigned integer like ASN.1 DER length

SYNTAX
       #include <fmt.h>

       size_t fmt_asn1derlength(char *dest,unsigned long long source);

DESCRIPTION
       fmt_asn1derlength encodes an unsigned integer using the ASN.1 DER for
       encoding tag lengths.  This can take from 1 byte (0-0x7f) up to
       sizeof(source)+1 bytes.

       If dest equals FMT_LEN (i.e. is NULL), fmt_asn1derlength returns the
       number of bytes it would have written.

       For convenience, fmt.h defines the integer FMT_ASN1LENGTH to be big
       enough to contain every possible fmt_asn1derlength output.

SEE ALSO
       scan_asn1derlength(3)

                                                          fmt_asn1derlength(3)