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バイナリリーディング / Binary Reading
Yoichi NAKAYAMA
September 26, 2019
Technology
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67
バイナリリーディング / Binary Reading
Yoichi NAKAYAMA
September 26, 2019
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Transcript
όΠφϦϦʔσΟϯά :PJDIJ/BLBZBNB !ࣾ-5
όΠφϦσʔλ w όΠφϦʹ̎ਐ w ίϯϐϡʔλ্ͷσʔλόΠφϦͷྻ
όΠφϦϦʔσΟϯά w ίʔυϦʔσΟϯά w ਓ͕ɺιʔείʔυΛಡΜͰɺཧղ͢Δ w όΠφϦϦʔσΟϯά w ਓ͕ɺόΠφϦσʔλΛಡΜͰɺཧղ͢Δ
$POUFOUT w ղ͖͍ͨ՝ͷઆ໌ w όΠφϦϦʔσΟϯάʹࢸΔաఔ w όΠφϦϦʔσΟϯάͷ࣮ྫ
͏ͷɿ3FNP IUUQTOBUVSFHMPCBM w ֎ઢϦϞίϯΛεϚϗΞϓϦ͔Βૢ࡞Ͱ͖Δ w ςϨϏɺΤΞίϯɺܬޫ౮ɺʜ w εϚʔτεϐʔΧʔͱ࿈ܞͰ͖Δ w (PPHMF)PNFɺ"NB[PO&DIP
ςϨϏΛফ͍ͨ͠ ʲσϞಈըʳ w 0,άʔάϧɺςϨϏΛফͯ͠ w ςϨϏΛΦϑʹ͠·͢ w ʢςϨϏ͕ফ͑Δʣ w 0,άʔάϧɺςϨϏΛফͯ͠
w Θ͔Γ·ͨ͠ɺςϨϏΛΦϑʹ͠·͢ w ʢςϨϏ͕͘ʣ
Ͱ͖ͨʁˠ՝͋Γ w ςϨϏͷϦϞίϯͷిݯϘλϯτάϧ w Φϯͷঢ়ଶͳΒΦϑʹભҠ w Φϑͷঢ়ଶͳΒΦϯʹભҠ w ফ͑Δ͔͔͘ςϨϏͷঢ়ଶʹґଘ w
ফ͍ͨ͠ͷʹফͤΔͱݶΒͳ͍
͑ͦ͏ͳใ w 40/:ςϨϏͷϦϞίϯʹిݯΦϑ͕͋ΔʢΒ͍͠ʣ w Yిݯʢτάϧʣ w YFిݯΦϯ w YGిݯΦϑˠ͜Ε͕ૹ৴Ͱ͖Ε͍͍ʂ
ֶशػೳͰͲ͏͔ʁ w 3FNPຊମΛλον w 3FNPʹϦϞίϯΛ͚ͯϘλϯΛԡ͢ w ˠಡΈऔͬͨ৴߸ΛొͰ͖Δ
ΞΠσΞ̍ w 3FNPͰϦϞίϯͷ৴߸ΛಡΈऔΔ w ಡΈऔͬͨ৴߸Λొ͢Δ w 3FNPͰςϨϏΛফ͢ ˠ/(खݩͷϦϞίϯʹిݯΦϑͷϘλϯ͕ͳ͍
)551"1*ͰͲ͏͔ʁ w IUUQTEFWFMPQFSOBUVSFHMPCBM w ొ͞Ε͍ͯΔ৴߸σʔλͷૹ৴ w ಡΈऔͬͨ৴߸σʔλͷऔಘ w ৴߸σʔλͷొ
ΞΠσΞ̎ w ཉ͍͠৴߸σʔλΛ࡞Δ w 3FNPͷ"1*Ͱ৴߸σʔλΛొ͢Δ w 3FNPͰςϨϏΛফ͢ ˠ/(৴߸σʔλͷϑΥʔϚοτΛΒͳ͍ ɹɹʢిݯΦϑϘλϯΛͲ͏දݱ͍͍͔ͯ͠Βͳ͍ʣ
ΞΠσΞ̏ w 3FNPͰϦϞίϯͷ৴߸ΛಡΈऔΔ w 3FNPͷ"1*Ͱ৴߸σʔλΛऔಘ͢Δ w ৴߸σʔλΛಡΜͰɺཧղ͢Δ w ཉ͍͠৴߸σʔλΛ࡞Δ w
3FNPͷ"1*Ͱ৴߸σʔλΛొ͢Δ w 3FNPͰςϨϏΛফ͢
σʔλΛோΊΔ w ಉ͡ϘλϯͰຖճҟͳΔ w ૈ͘ݟΔͱ͓͓Αͦͷഒ w EBUBKTPOMPBET T <lEBUB> w
QSJOU KPJO TUS SPVOE E GPSEJOEBUB w ిݯʢτάϧʣͷ৴߸ΛಡΈऔΓ
ύλʔϯ͕ݟ͑ͨ w w w w w
w
ͯ͞Ͳ͏͠Α͏ʁ w Θ͔͍ͬͯΔ w ϘλϯͱϦϞίϯίʔυʢਐʣͷରԠ w ϦϞίϯʹଘࡏ͢ΔϘλϯͷ৴߸σʔλ w Γ͍ͨ w
ϦϞίϯʹଘࡏ͠ͳ͍Ϙλϯͷ৴߸σʔλ
ଞͷϘλϯͱൺֱ w ిݯ τάϧ YC w w YC w
w YC w
Θ͔ͬͨ w YCʜిݯ τάϧ w w ͷͱ͜ΖɿϦϞίϯίʔυ w
MFBTUTJHOJpDBOUCJUpSTU w C C w ඌɿνΣοΫαϜ w Yˠ w Ϗοτ͕૿͑Δ͝ͱʹ̍σΫϦϝϯτ
ిݯΦϑ w ిݯ τάϧ YC w w ిݯΦϑYGC w
ʲσϞಈըʳ w 3FNPͷ-PDBM"1*ܦ༝ͰిݯΦϑΛൃ৴ w ʢςϨϏ͕ফ͑Δʣ w 3FNPͷ-PDBM"1*ܦ༝ͰిݯΦϑΛൃ৴ w ʢςϨϏফ͑ͨ··ʣ
·ͱΊ w ϦϞίϯ৴߸σʔλͷόΠφϦϦʔσΟϯάΛߦͬͨ w ϦόʔεΤϯδχΞϦϯάͷख๏Λͬͨ w ʮಡΜͰɺཧղ͢Δʯͱ͖ʹͨ͜͠ͱ w ಉ͡ೖྗʹର͢Δग़ྗσʔλͷڞ௨ w
ҟͳΔೖྗʹର͢Δग़ྗσʔλͷڞ௨ɺ૬ҧ w ֶΜͩ͜ͱίʔυʹHJUIVCDPNZPJDIJSFNP@VUJM