> Hi guys. Here is tiny challendge to warm up. ;)
>
> We have X variable. What is shortest possible
> code to obtain 2X + 1 result back into X cell ?
>
> WBR Dmitry.
>
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> -----Original Message-----
> From: pic microcontroller discussion list
> [@spam@PICLISTKILLspamMITVMA.MIT.EDU]On Behalf Of John Dammeyer
> Sent: Tuesday, June 04, 2002 12:11
> To: KILLspamPICLISTKILLspamMITVMA.MIT.EDU
> Subject: Re: [PIC]: Tine challendge shortest X -> 2X + 1
>
>
> >From the Bytecraft C
>
> 08D9 1003    BCF    STATUS,C          i = i*2+1;
>  >
> MPC "C" COMPILER V1.40  24-Jul-2000
> PAGE 89
>
>
> 08DA 0D4D    RLF    4D,W
> 08DB 00FE    MOVWF  7E
> 08DC 0A7E    INCF   7E,W
> 08DD 00CD    MOVWF  4D
>
> John Dammeyer
>
>
>
> Wireless CAN with the CANRF module.
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>
>
> > -----Original Message-----
> > From: pic microcontroller discussion list
> > [RemoveMEPICLISTTakeThisOuTMITVMA.MIT.EDU] On Behalf Of Scott Dattalo
> > Sent: Tuesday, June 04, 2002 7:04 AM
> > To: spamBeGonePICLISTspamBeGoneMITVMA.MIT.EDU
> > Subject: Re: [PIC]: Tine challendge shortest X -> 2X + 1
> >
> >
> > On Mon, 3 Jun 2002, Dmitriy A. Kiryashov wrote:
> >
> > > Hi guys. Here is tiny challendge to warm up. ;)
> > >
> > > We have X variable. What is shortest possible
> > > code to obtain 2X + 1 result back into X cell ?
> > >
> >
> > How about:
> >
> > sdcc -S -mpic14 c.c
> >
> > ...
> >
> > ;;      Unrolled 8 X 8 multiplication
> > ;#CSRC  c.c 71
> > ;  achar0 = achar0*2 + 1;
> >         MOVF    _achar0,W       ;key=000,flow seq=001
> >         MOVWF   r0x20   ;key=001,flow seq=001
> >         ADDWF   r0x20,F ;key=002,flow seq=001
> >         CLRF    r0x21   ;key=003,flow seq=001
> >         RLF     r0x21,F ;key=004,flow seq=001
> >         INCF    r0x20,W ;key=005,flow seq=001
> >         MOVWF   _achar0 ;key=006,flow seq=001
> >
> > I think I hate C compilers. :)
> >
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> >
> >
> >
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>

>John Dammeyer wrote:
>>
>>>From the Bytecraft C
>>
>>08D9 1003    BCF    STATUS,C          i = i*2+1;
>>
>>MPC "C" COMPILER V1.40  24-Jul-2000
>>PAGE 89
>>
>>08DA 0D4D    RLF    4D,W
>>08DB 00FE    MOVWF  7E
>>08DC 0A7E    INCF   7E,W
>>08DD 00CD    MOVWF  4D
>>
>>
>MPC "C" COMPILER B1.96s  31-May-2002
>
>001F 1403    BSF    STATUS,C          c = (2 * c) + 1;
>0020 0DB5    RLF    35
>

>On Mon, 3 Jun 2002, Dmitriy A. Kiryashov wrote:
>
>> Hi guys. Here is tiny challendge to warm up. ;)
>>
>> We have X variable. What is shortest possible
>> code to obtain 2X + 1 result back into X cell ?
>>
>
>How about:
>
>sdcc -S -mpic14 c.c
>
>...
>
>;;      Unrolled 8 X 8 multiplication
>;#CSRC  c.c 71
>;  achar0 = achar0*2 + 1;
>        MOVF    _achar0,W       ;key=000,flow seq=001
>        MOVWF   r0x20   ;key=001,flow seq=001
>        ADDWF   r0x20,F ;key=002,flow seq=001
>        CLRF    r0x21   ;key=003,flow seq=001
>        RLF     r0x21,F ;key=004,flow seq=001
>        INCF    r0x20,W ;key=005,flow seq=001
>        MOVWF   _achar0 ;key=006,flow seq=001
>
>I think I hate C compilers. :)