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How to get the negate of decimal to binary?
Post 302879166 by digiteltlc on Wednesday 11th of December 2013 02:43:05 AM
12-11-2013
How to get the negate of decimal to binary?
Hi All,
New to this forum (and yes , a newbie in programming..
)
I have a decimal to binary converter script done this way :
i=$1
bit0=$(( (i & 0x01) > 0 ))
bit1=$(( (i & 0x02) > 0 ))
bit2=$(( (i & 0x04) > 0 ))
bit3=$(( (i & 0x08) > 0 ))
bit4=$(( (i & 0x10) > 0 ))
bit5=$(( (i & 0x20) > 0 ))
bit6=$(( (i & 0x40) > 0 ))
bit7=$(( (i & 0x80) > 0 ))
Fisrt I would like to understand how the expression $(( (i & 0x01) > 0 )) works
Next, I need to obtain the same bits to its negate, so i.e. if for decimal 177
bit0=1
bit1=0
bit2=0
bit3=0
bit4=1
bit5=1
bit6=0
bit7=1
I need
bit8=0
bit9=1
bitA=1
bitB=1
bitC=0
bitD=0
bitE=1
bitF=0
is there a way to accomplish this inside the same script ??
Thank you very much.
New to this forum (and yes , a newbie in programming..
)I have a decimal to binary converter script done this way :
i=$1
bit0=$(( (i & 0x01) > 0 ))
bit1=$(( (i & 0x02) > 0 ))
bit2=$(( (i & 0x04) > 0 ))
bit3=$(( (i & 0x08) > 0 ))
bit4=$(( (i & 0x10) > 0 ))
bit5=$(( (i & 0x20) > 0 ))
bit6=$(( (i & 0x40) > 0 ))
bit7=$(( (i & 0x80) > 0 ))
Fisrt I would like to understand how the expression $(( (i & 0x01) > 0 )) works
Next, I need to obtain the same bits to its negate, so i.e. if for decimal 177
bit0=1
bit1=0
bit2=0
bit3=0
bit4=1
bit5=1
bit6=0
bit7=1
I need
bit8=0
bit9=1
bitA=1
bitB=1
bitC=0
bitD=0
bitE=1
bitF=0
is there a way to accomplish this inside the same script ??
Thank you very much.
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LEARN ABOUT DEBIAN
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libcaca attribute definitions - Enumerations enum caca_color { CACA_BLACK = 0x00, CACA_BLUE = 0x01, CACA_GREEN = 0x02, CACA_CYAN = 0x03, CACA_RED = 0x04, CACA_MAGENTA = 0x05, CACA_BROWN = 0x06, CACA_LIGHTGRAY = 0x07, CACA_DARKGRAY = 0x08, CACA_LIGHTBLUE = 0x09, CACA_LIGHTGREEN = 0x0a, CACA_LIGHTCYAN = 0x0b, CACA_LIGHTRED = 0x0c, CACA_LIGHTMAGENTA = 0x0d, CACA_YELLOW = 0x0e, CACA_WHITE = 0x0f, CACA_DEFAULT = 0x10, CACA_TRANSPARENT = 0x20 } enum caca_style { CACA_BOLD = 0x01, CACA_ITALICS = 0x02, CACA_UNDERLINE = 0x04, CACA_BLINK = 0x08 } Detailed Description Colours and styles that can be used with caca_set_attr(). Enumeration Type Documentation enum caca_color libcaca colour keyword Enumerator: CACA_BLACK The colour index for black. CACA_BLUE The colour index for blue. CACA_GREEN The colour index for green. CACA_CYAN The colour index for cyan. CACA_RED The colour index for red. CACA_MAGENTA The colour index for magenta. CACA_BROWN The colour index for brown. CACA_LIGHTGRAY The colour index for light gray. CACA_DARKGRAY The colour index for dark gray. CACA_LIGHTBLUE The colour index for blue. CACA_LIGHTGREEN The colour index for light green. CACA_LIGHTCYAN The colour index for light cyan. CACA_LIGHTRED The colour index for light red. CACA_LIGHTMAGENTA The colour index for light magenta. CACA_YELLOW The colour index for yellow. CACA_WHITE The colour index for white. CACA_DEFAULT The output driver's default colour. CACA_TRANSPARENT The transparent colour. enum caca_style libcaca style keyword Enumerator: CACA_BOLD The style mask for bold. CACA_ITALICS The style mask for italics. CACA_UNDERLINE The style mask for underline. CACA_BLINK The style mask for blink. Author Generated automatically by Doxygen for libcaca from the source code. Version 0.99.beta18 Fri Apr 6 2012 libcaca attribute definitions(3caca)