Re: operacje na bitach

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#9598

From: Paweł
Date: Tue, 25 Oct 2005 20:21

39 lines
1638 bytes

Hilarion wrote:

>> implementacja powyzszego zajmuje 9 bajtow ichnego kodu:
>>
>> public static byte foo(int x)
>> {
>>    return (byte)(x ^ 0xff);
>> /*
>>        IL_0000:  ldarg.0
>>        IL_0001:  ldc.i4 255
>>        IL_0006:  xor
>>        IL_0007:  conv.u1
>>        IL_0008:  ret
>> */
>> }
>>
>> ale w sumie mozna to zrobic szybciej i latwiej (tylko 4 bajty kodu).
>>
>> public static byte bar(int x)
>> {
>>    return (byte)(~x);
>> /*
>>        IL_0000:  ldarg.0
>>        IL_0001:  not
>>        IL_0002:  conv.u1
>>        IL_0003:  ret
>> */
>> }
> 
> 
> A co wychodzi z poniższego?
> 
> public static byte bar(int x)
> {
>    return ~((byte)x);
> }

błąd :)
error CS0029: Cannot implicitly convert type `int' to `byte'

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From: Paweł <root@[127.0.0.1]>
Newsgroups: alt.pl.comp.lang.csharp
Subject: Re: operacje na bitach
Date: Tue, 25 Oct 2005 22:21:15 +0200
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