The byte-manipulation functions use objects called byte specifiers to designate the size and position of a specific byte within an integer. The representation of a byte specifier is implementation-dependent; it might or might not be a number. The function byte will construct a byte specifier, which various other byte-manipulation functions will accept.
Figure 12--6 shows defined names relating to manipulating bytes of numbers.
byte deposit-field ldb-test byte-position dpb mask-field byte-size ldb
Figure 12--6: Defined names relating to byte manipulation.
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