ToC | DocOverview | CGDoc | RelNotes | Index | PermutedIndex
| Allegro CL

| ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers
12.2.67 deposit-field | Function
  Syntax: deposit-field newbyte bytespec integer result-integer Arguments and Values: newbyte - an integer. bytespec - a byte specifier. integer - an integer. result-integer - an integer. Description: Replaces a field of bits within integer; specifically, returns an integer that contains the bits of newbyte within the byte specified by bytespec, and elsewhere contains the bits of integer. Examples:
       (deposit-field 7 (byte 2 1) 0)  6
       (deposit-field -1 (byte 4 0) 0)  15
       (deposit-field 0 (byte 2 1) -3)  -7
  See Also: byte, dpb Notes:
       (logbitp j (deposit-field m (byte s p) n))
       ==(if (and (>= j p) (< j (+ p s)))
              (logbitp j m)
              (logbitp j n))
deposit-field is to mask-field as dpb is to ldb. Allegro CL Implementation Details: None.

© Franz Inc. All Rights Reserved - File last updated 2022-07-25