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Annotation of OpenXM/src/asir-doc/parts/builtin/bit.texi, Revision 1.3

1.3     ! noro        1: @comment $OpenXM: OpenXM/src/asir-doc/parts/builtin/bit.texi,v 1.2 1999/12/21 02:47:33 noro Exp $
1.2       noro        2: \BJP
1.1       noro        3: @node bit $B1i;;(B,,, $BAH$_9~$_H!?t(B
                      4: @section bit $B1i;;(B
1.2       noro        5: \E
                      6: \BEG
                      7: @node Bit operations,,, Built-in Function
                      8: @section Bit operations
                      9: \E
1.1       noro       10:
                     11: @menu
                     12: * iand ior ixor::
                     13: * ishift::
                     14: @end menu
                     15:
1.2       noro       16: \JP @node iand ior ixor,,, bit $B1i;;(B
                     17: \EG @node iand ior ixor,,, Bit operations
1.1       noro       18: @subsection @code{iand}, @code{ior}, @code{ixor}
                     19: @findex iand
                     20: @findex ior
                     21: @findex ixor
                     22:
                     23: @table @t
                     24: @item iand(@var{i1},@var{i2})
1.2       noro       25: \JP :: bit $B$4$H$N(B and
                     26: \EG :: bitwise and
1.1       noro       27: @item ior(@var{i1},@var{i2})
1.2       noro       28: \JP :: bit $B$4$H$N(B or
                     29: \EG :: bitwise or
1.1       noro       30: @item ixor(@var{i1},@var{i2})
1.2       noro       31: \JP :: bit $B$4$H$N(B xor
                     32: \EG :: bitwise xor
1.1       noro       33: @end table
                     34:
                     35: @table @var
                     36: @item return
1.2       noro       37: \JP $B@0?t(B
                     38: \EG integer
1.3     ! noro       39: @item i1 i2
1.2       noro       40: \JP $B@0?t(B
                     41: \EG integer
1.1       noro       42: @end table
                     43:
                     44: @itemize @bullet
1.2       noro       45: \BJP
1.1       noro       46: @item
                     47: $B@0?t(B @var{i1}, @var{i2} $B$N@dBPCM$r(B bit $BNs$H$_$F1i;;$9$k(B.
                     48: @item
                     49: $B0z?t$NId9f$OL5;k$7(B, $BHsIi$NCM$rJV$9(B.
1.2       noro       50: \E
                     51: \BEG
                     52: @item
                     53: The absolute value of the argument is regarded as a bit string.
                     54: @item
                     55: The sign of the argument is ignored and a non-negative integer is returned.
                     56: \E
1.1       noro       57: @end itemize
                     58:
                     59: @example
                     60: [0] ctrl("hex",1);
                     61: 0x1
                     62: [1] iand(0xeeeeeeeeeeeeeeee,0x2984723234812312312);
                     63: 0x4622224802202202
                     64: [2] ior(0xa0a0a0a0a0a0a0a0,0xb0c0b0b0b0b0b0b);
                     65: 0xabacabababababab
                     66: [3] ixor(0xfffffffffff,0x234234234234);
                     67: 0x2cbdcbdcbdcb
                     68: @end example
                     69:
                     70: @table @t
1.2       noro       71: \JP @item $B;2>H(B
                     72: \EG @item References
1.1       noro       73: @fref{ishift}.
                     74: @end table
                     75:
1.2       noro       76: \JP @node ishift,,, bit $B1i;;(B
                     77: \EG @node ishift,,, Bit operations
1.1       noro       78: @subsection @code{ishift}
                     79: @findex ishift
                     80:
                     81: @table @t
                     82: @item ishift(@var{i},@var{count})
                     83: :: bit shift
                     84: @end table
                     85:
                     86: @table @var
                     87: @item return
1.2       noro       88: \JP $B@0?t(B
                     89: \EG integer
1.3     ! noro       90: @item i count
1.2       noro       91: \JP $B@0?t(B
                     92: \EG integer
1.1       noro       93: @end table
                     94:
                     95: @itemize @bullet
1.2       noro       96: \BJP
1.1       noro       97: @item
                     98: $B@0?t(B @var{i} $B$N@dBPCM$r(B bit $BNs$H$_$F(B shift $B$9$k(B.
                     99: @item
                    100: @var{i} $B$NId9f$OL5;k$7(B, $BHsIi$NCM$rJV$9(B.
                    101: @item
                    102: @var{count} $B$,@5$J$i$P1&(B shift, $BIi$J$i$P:8(B shift $B$r9T$&(B.
1.2       noro      103: \E
                    104: \BEG
                    105: @item
                    106: The absolute value of @var{i} is regarded as a bit string.
                    107: @item
                    108: The sign of @var{i} is ignored and a non-negative integer is returned.
                    109: @item
                    110: If @var{count} is positive, then @var{i} is shifted to the right.
                    111: If @var{count} is negative, then @var{i} is shifted to the left.
                    112: \E
1.1       noro      113: @end itemize
                    114:
                    115: @example
                    116: [0] ctrl("hex",1);
                    117: 0x1
                    118: [1] ishift(0x1000000,12);
                    119: 0x1000
                    120: [2] ishift(0x1000,-12);
                    121: 0x1000000
                    122: [3] ixor(0x1248,ishift(1,-16)-1);
                    123: @end example
                    124:
                    125: @table @t
1.2       noro      126: \JP @item $B;2>H(B
                    127: \EG @item References
1.1       noro      128: @fref{iand ior ixor}.
                    129: @end table