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in reply to Re^4: Operate with bits
in thread Operate with bits

Maybe because syedasadali95 is actually dealing with hex digits (nibbles), not with bits as assumed by my post and stated by every one of syedasadali95's posts up until the reply to soonix.

Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond

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Re^6: Operate with bits
by AnomalousMonk (Archbishop) on Mar 12, 2020 at 08:07 UTC

    Even so: 

    c:\@Work\Perl\monks>perl -wMstrict -le
"LINE:
 for my $line (
   'tag:0x3bb5044d addr:0x1009db0 qospri:40 len:0x40',
   'tag:0x3bb5043d addr:0x1009d40 qospri:30 len:0x30',
   'tag:0x3bb5044d addr:0xb0 qospri:40 len:0x40',
   'tag:0x3bb5043d addr:0x40 qospri:30 len:0x30',
   'tag:0x3bb5044d qospri:40 len:0x40',
   'tag:0x3bb5043d qospri:30 len:0x30',
   ) {
   my $got_addr =
   my ($hex_str) =
   $line =~ m{ addr:0x ([[:xdigit:]]+) }xms;
   ;;
   next LINE if not $got_addr;
   ;;
   my $bit_6_set = 0x40 & hex $hex_str;
   ;;
   printf qq{bit 6 %7s in %9s of '$line' \n},
     $bit_6_set ? 'set' : 'not set',
     qq{'$hex_str'}
     ;
   }
"
bit 6 not set in '1009db0' of 'tag:0x3bb5044d addr:0x1009db0 qospri:40
+ len:0x40'
bit 6     set in '1009d40' of 'tag:0x3bb5043d addr:0x1009d40 qospri:30
+ len:0x30'
bit 6 not set in      'b0' of 'tag:0x3bb5044d addr:0xb0 qospri:40 len:
+0x40'
bit 6     set in      '40' of 'tag:0x3bb5043d addr:0x40 qospri:30 len:
+0x30'

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