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Bitwise AND, OR, XOR, NOT, Bit Shifting and RGB.

 
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SnarlingSheep
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PostPosted: Fri Aug 01, 2003 9:48 pm    Post subject: Bitwise AND, OR, XOR, NOT, Bit Shifting and RGB. Reply with quote

NOTE: Functions only work with integers
Bitwise AND, OR, XOR, NOT, Shift-Left and Shift-Right.
Also has a RGB function for returning a value equivalent to an API COLORREF.

10 functions:
-SSBitAnd: Bitwise AND on 2 numbers, same as (25 & 5).
-SSBitOR: Bitwise OR on 2 numbers, same as (25 | 5).
-SSBitXOR: Bitwise XOR on 2 numbers, same as (25 ^ 5).
-SSBitNOT: Bitwise NOT on a number.
-SSBitRShift: Bitwise right-shift of n1 by n2 places, same as (25 >> 5)
-SSBitLShift: Bitwise left-shift of n1 by n2 places, same as (25 << 5)
-SSRGB: Returns a COLORREF value based on 3 inputed numbers, same as RGB(0,0,255) which returns a value for Blue.
-SSHex2Dec: only needed if you want to perform an AND, OR or XOR on a hex number.
-SSDec2Bin: Used by the main functions to convert Decimal to it's Binary equivelant.
-SSBin2Dec: Used by the main functions to convert Binary back to Decimal.
::Thanks to Mindpower for the NOT and Shifting code, although I changed the shifts to return the same results as C's << and >>.
Code:

#DEFINE FUNCTION,SSBitAND
#DEFINE FUNCTION,SSBitXOR
#DEFINE FUNCTION,SSBitOR
#DEFINE FUNCTION,SSBitNOT
#DEFINE FUNCTION,SSHex2Dec
#DEFINE FUNCTION,SSDec2Bin
#DEFINE FUNCTION,SSBin2Dec
#DEFINE FUNCTION,SSBitRShift
#DEFINE FUNCTION,SSBitLShift
#DEFINE FUNCTION,SSRGB
REM 15 & 2 = 2
REM INFO @SSBitAND(15,2)

REM 15 | 2 = 15
REM INFO @SSBitOR(15,2)

REM 15 ^ 2 = 13
REM INFO @SSBitXOR(15,2)

REM NOT 25 = -26
REM INFO @SSBitNOT(25)

REM 15 >> 2 = 3
REM INFO @SSBitRShift(15,2)

REM 15 << 2 = 60
REM INFO @SSBitLShift(15,2)

REM RGB(255,0,255) = 16711935 (LIME - COLORREF value you can pass to various API's)
INFO @SSRGB(255,0,255)
exit

:SSBitAnd
  %%SSBAresult = ""
  %%SSBA1 = @SSDec2Bin(%1)
  %%SSBA2 = @SSDec2Bin(%2)
  IF @GREATER(@LEN(%%SSBA1),@LEN(%%SSBA2))
    %%SSBAStop = @LEN(%%SSBA1)
    %%SSBACheck = 1
  ELSE
    %%SSBAStop = @LEN(%%SSBA2)
    %%SSBACheck = 2
  END
  WHILE @NOT(@EQUAL(@LEN(%%SSBA2),@LEN(%%SSBA1)))
    IF @EQUAL(%%SSBACheck,1)
      %%SSBA2 = "0"%%SSBA2
    ELSE
      %%SSBA1 = "0"%%SSBA1
    END
  WEND
  %%SSBAX = 1
  REPEAT
    IF @BOTH(@EQUAL(@SUBSTR(%%SSBA1,%%SSBAX,%%SSBAX),1),@EQUAL(@SUBSTR(%%SSBA2,%%SSBAX,%%SSBAX),1))
     %%SSBAResult = %%SSBAResult"1"
   ELSE
     %%SSBAResult = %%SSBAResult"0"   
   END
   %%SSBAX = @SUCC(%%SSBAX)
  UNTIL @GREATER(%%SSBAX,%%SSBAStop)
  %%SSBAresult = @SSBin2Dec(%%SSBAresult)
  exit %%SSBAresult

:SSBitOR
  %%SSBOresult = ""
  %%SSBO1 = @SSDec2Bin(%1)
  %%SSBO2 = @SSDec2Bin(%2)
  IF @GREATER(@LEN(%%SSBO1),@LEN(%%SSBO2))
    %%SSBOStop = @LEN(%%SSBO1)
    %%SSBOCheck = 1
  ELSE
    %%SSBOStop = @LEN(%%SSBO2)
    %%SSBOCheck = 2
  END
  WHILE @NOT(@EQUAL(@LEN(%%SSBO2),@LEN(%%SSBO1)))
    IF @EQUAL(%%SSBOCheck,1)
      %%SSBO2 = "0"%%SSBO2
    ELSE
      %%SSBO1 = "0"%%SSBO1
    END
  WEND
  %%SSBOX = 1
  REPEAT
    IF @EQUAL(@SUBSTR(%%SSBO1,%%SSBOX,%%SSBOX),1)@EQUAL(@SUBSTR(%%SSBO2,%%SSBOX,%%SSBOX),1)
     %%SSBOResult = %%SSBOResult"1"
   ELSE
     %%SSBOResult = %%SSBOResult"0"   
   END
   %%SSBOX = @SUCC(%%SSBOX)
  UNTIL @GREATER(%%SSBOX,%%SSBOStop)
  %%SSBOresult = @SSBin2Dec(%%SSBOresult)
  exit %%SSBOresult   
   
:SSBitXOR
  %%SSBXOresult = ""
  %%SSBXO1 = @SSDec2Bin(%1)
  %%SSBXO2 = @SSDec2Bin(%2)
  IF @GREATER(@LEN(%%SSBXO1),@LEN(%%SSBXO2))
    %%SSBXOStop = @LEN(%%SSBXO1)
    %%SSBXOCheck = 1
  ELSE
    %%SSBXOStop = @LEN(%%SSBXO2)
    %%SSBXOCheck = 2
  END
  WHILE @NOT(@EQUAL(@LEN(%%SSBXO2),@LEN(%%SSBXO1)))
    IF @EQUAL(%%SSBXOCheck,1)
      %%SSBXO2 = "0"%%SSBXO2
    ELSE
      %%SSBXO1 = "0"%%SSBXO1
    END
  WEND
  %%SSBXOX = 1
  REPEAT
   IF @BOTH(@EQUAL(@SUBSTR(%%SSBXO1,%%SSBXOX,%%SSBXOX),1),@EQUAL(@SUBSTR(%%SSBXO2,%%SSBXOX,%%SSBXOX),1))
     %%SSBXOResult = %%SSBXOResult"0"
   ELSIF @BOTH(@ZERO(@SUBSTR(%%SSBXO1,%%SSBXOX,%%SSBXOX)),@ZERO(@SUBSTR(%%SSBXO2,%%SSBXOX,%%SSBXOX)))
       %%SSBXOResult = %%SSBXOResult"0"
   ELSE
     %%SSBXOResult = %%SSBXOResult"1"
   END
   %%SSBXOX = @SUCC(%%SSBXOX)
  UNTIL @GREATER(%%SSBXOX,%%SSBXOStop)
  %%SSBXOresult = @SSBin2Dec(%%SSBXOresult)
  exit %%SSBXOresult

:SSDec2Bin
  %%SSD2Bresult = ""
  %%SSD2BintValue = %1
  While @GREATER(%%SSD2BintValue,0)
    %%SSD2Bi = @MOD(%%SSD2BIntValue,2)
    %%SSD2Bi = @FADD(%%SSD2Bi,1)
    %%SSD2BintValue = @DIV(%%SSD2BintValue,2)
    %%SSD2Bresult = @SUBSTR("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ",%%SSD2Bi,%%SSD2Bi)%%SSD2Bresult
  WEND
  exit %%SSD2Bresult
 
:SSBin2Dec
  %%SSB2DResult = 0
  %%SSB2DX = 1
  %%SSB2DStrValue = %1
  REPEAT
    %%SSB2DCharValue = @POS(@UPPER(@SUBSTR(%%SSB2DStrValue,%%SSB2DX,%%SSB2DX)),"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")
    #return -1 if character is not supported by base
    If @GREATER(%%SSB2DCharValue,2)
     %%SSB2DResult = -1
     %%SSB2DX = @SUCC(@LEN(%%SSB2DStrValue))
   END
    %%SSB2DResult = @FADD(@FMUL(%%SSB2DResult,2),@FSUB(%%SSB2DcharValue,1))
   %%SSB2DX = @SUCC(%%SSB2DX)
  UNTIL @GREATER(%%SSB2DX,@LEN(%%SSB2DStrValue))
  exit %%SSB2DResult
 
:SSHex2Dec
  %%SSH2DHex = %1
  %%SSH2D = 0
  %%SSH2DX = 1
  repeat
    %%SSH2DChar = @UPPER(@SUBSTR(%%SSH2DHex,%%SSH2DX,%%SSH2DX))
    %%SSH2DPos = @FSUB(@POS(%%SSH2DChar,"0123456789ABCDEF"),1)
    %%SSH2D = @FADD(@FMUL(%%SSH2D,16),%%SSH2DPos)
    %%SSH2DX = @SUCC(%%SSH2DX)
  until @GREATER(%%SSH2DX,@LEN(%%SSH2DHex))
  exit %%SSH2D

:SSBitNOT
  if @Equal(@Pos(-,%1),1)
    %%SSBitNot = @fsub(@StrDel(%1,1),1)
  Else
    %%SSBitNot = @fsub(-%1,1)
  End
  Exit %%SSBitNot

:SSBitRShift
  %%SSBRSresult = " "
  %%SSBRS1 = ""
  %%SSBRS2 = @SSDec2Bin(%1)
  %%SSBRSx = 0
  repeat
    %%SSBRS1 = %%SSBRS1"0"
    %%SSBRSx = @SUCC(%%SSBRSx)
  until @EQUAL(%%SSBRSx,%2)
  %%SSBRS1 = %%SSBRS1%%SSBRS2
  %%SSBRSresult = @SSBin2Dec(@SUBSTR(%%SSBRS1,1,@LEN(%%SSBRS2)))
  exit %%SSBRSresult

:SSBitLShift
  %%SSBLSresult = " " 
  %%SSBLS1 = @SSDec2Bin(%1)
  %%SSBLS2 = @SSDec2Bin(%1)
  %%SSBLSx = 0
  repeat
    %%SSBLS1 = %%SSBLS1"0"
    %%SSBLSx = @SUCC(%%SSBLSx)
  until @EQUAL(%%SSBLSx,%2)
  REM if (@GREATER(@LEN(%%SSBLS1),8)
    REM %%SSBLScut = @FSUB(@LEN(%%SSBLS1),8)
    REM %%SSBLSresult = @SSBin2Dec(@SUBSTR(%%SSBLS1,%%SSBLScut,@SUM(%%SSBLScut,8)))
  REM else
    %%SSBLSresult = @SSBin2Dec(%%SSBLS1)
  REM end
  exit %%SSBLSresult

:SSRGB
  %%SSRed = %1
  %%SSGreen = %2
  %%SSBlue = %3
  %%SSGreen = @SSBitLShift(%%SSGreen,8)
  %%SSBlue = @SSBitLShift(%%SSBlue,16)
  %%SSRGBResult = @SSBitOR(%%SSRed,%%SSGreen)
  %%SSRGBResult = @SSBitOR(%%SSRGBResult,%%SSBLue)
  exit %%SSRGBResult

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Last edited by SnarlingSheep on Fri Nov 27, 2009 3:01 pm; edited 4 times in total
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FreezingFire
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PostPosted: Fri Aug 01, 2003 9:58 pm    Post subject: Reply with quote

Nice work. Very Happy
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SnarlingSheep
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PostPosted: Fri Aug 01, 2003 10:42 pm    Post subject: Reply with quote

UPDATED: Now has AND, OR and XOR functions.
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PostPosted: Sat Aug 02, 2003 4:50 am    Post subject: Reply with quote

Nice work. Very Happy Good when one doesn't have to process a large amount of data(encrypting a file) or when speed is everything . Sincirely I haven't benchmarked them for the speed differerce though - it may be small ?.
Also i saw several codes in VB for converting a 32num to loword etc they had a limitation that beyond a particular number there is need for a different formula. SnarlingSheep is there any such limitation here above ? ( i have always been bad at math) Laughing

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SnarlingSheep
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PostPosted: Sat Aug 02, 2003 5:33 am    Post subject: Reply with quote

I'm no math wiz either..so if anyone finds any limitations let me know Smile
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PostPosted: Fri Aug 15, 2003 8:34 pm    Post subject: Reply with quote

Hi SnarlingSheep,
I must say this is pretty impressive but I have only one correction to make... 0 xor 0 is not equal to 1. 0 xor 0 is equal to 0. Just like 1 xor 1 is equal to 0. Below is a corrected version of your Xor function...

Code:
:SSBitXOR
  %%SSBXOresult = ""
  %%SSBXO1 = @SSDec2Bin(%1)
  %%SSBXO2 = @SSDec2Bin(%2)
  IF @GREATER(@LEN(%%SSBXO1),@LEN(%%SSBXO2))
    %%SSBXOStop = @LEN(%%SSBXO1)
    %%SSBXOCheck = 1
  ELSE
    %%SSBXOStop = @LEN(%%SSBXO2)
    %%SSBXOCheck = 2
  END
  WHILE @NOT(@EQUAL(@LEN(%%SSBXO2),@LEN(%%SSBXO1)))
    IF @EQUAL(%%SSBXOCheck,1)
      %%SSBXO2 = "0"%%SSBXO2
    ELSE
      %%SSBXO1 = "0"%%SSBXO1
    END
  WEND
  %%SSBXOX = 1
  REPEAT
   IF @BOTH(@EQUAL(@SUBSTR(%%SSBXO1,%%SSBXOX,%%SSBXOX),1),@EQUAL(@SUBSTR(%%SSBXO2,%%SSBXOX,%%SSBXOX),1))
     %%SSBXOResult = %%SSBXOResult"0"
   ELSIF @BOTH(@ZERO(@SUBSTR(%%SSBXO1,%%SSBXOX,%%SSBXOX)),@ZERO(@SUBSTR(%%SSBXO2,%%SSBXOX,%%SSBXOX)))
       %%SSBXOResult = %%SSBXOResult"0"
   ELSE
     %%SSBXOResult = %%SSBXOResult"1"
   END
   %%SSBXOX = @SUCC(%%SSBXOX)
  UNTIL @GREATER(%%SSBXOX,%%SSBXOStop)
  %%SSBXOresult = @SSBin2Dec(%%SSBXOresult)
  exit %%SSBXOresult


Have fun bitwizards Wink

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vdsalchemist
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PostPosted: Fri Aug 15, 2003 9:33 pm    Post subject: Reply with quote

Hi SnarlingSheep,
Here is a couple more bitwise operators to add to your Unit Wink You will have to add these in with the rest because they use your SSBin2Dec and SSDec2Bin functions above...



Code:
#DEFINE FUNCTION,SSBitRShift
#DEFINE FUNCTION,SSBitLShift


%%RShift = @SSBitRShift(@asc(a),2)
Info @asc(a) << 2 = %%RShift
Info %%RShift >> 2 = @SSBitLShift(%%RShift,2)
Stop

:SSBitRShift
  %%SSBRSresult = ""
  %%SSBRS1 = @SSDec2Bin(%1)
  %U = @len(%%SSBRS1)
  %%SSBRS2 = %2
  %T = 0
  %S =
  repeat
    %%SSBRS1 = "0"%%SSBRS1
    %T = @Succ(%T)
  Until @Greater(%T,%%SSBRS2)
  if @Greater(@len(%%SSBRS1),8)
    %%SSBRSresult = @SSBin2Dec(@strdel(%%SSBRS1,@succ(%U),@Sum(%U,%%SSBRS2)))
  Else
    %%SSBRSresult = @SSBin2Dec(%%SSBRS1)   
  End
exit  %%SSBRSresult

:SSBitLShift
  %%SSBLSresult = ""
  %%SSBLS1 = @SSDec2Bin(%1)
  %%SSBLS2 = %2
  %T = 0
  repeat
    %%SSBLS1 = %%SSBLS1"0"
    %T = @Succ(%T)
  Until @Equal(%T,%2)
  if @Greater(@len(%%SSBLS1),8)
    %%SSBLSresult = @SSBin2Dec(@strdel(%%SSBLS1,1,%%SSBLS2))
  Else
    %%SSBLSresult = @SSBin2Dec(%%SSBLS1)
  End
exit  %%SSBLSresult


Anyway now you can have even more fun with bitwise rotation... These functions rotate a single byte (first Argument) by the number of bits in the (Second Argument) either left or right...

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Last edited by vdsalchemist on Tue Aug 26, 2003 9:26 pm; edited 1 time in total
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vdsalchemist
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PostPosted: Tue Aug 26, 2003 9:25 pm    Post subject: Reply with quote

Hi SnarlingSheep,
Here is another Bitwise function for ya. And I think that is all of them that you would need.
This just does a bitwise Not. It's very simple but extremly powerful if you mix this with the AND, OR, XOR....

Code:
#DEFINE FUNCTION,SSBitNot

%A = @SSBitNot(25)
Info %A@CR()
%B = @SSBitNot(%A)
Info %B@CR()
Stop
:SSBitNot
  if @Equal(@Pos(-,%1),1)
    %%SSBitNot = @fsub(@StrDel(%1,1),1)
  Else
    %%SSBitNot = @fsub(-%1,1)
  End
Exit %%SSBitNot


EDITED: Now this function can handle negative numbers as well so you can check your work Wink

Edit2: I forgot to note...I am using floating point math here. So that means that the answer will not be the same as the Windows calculator if you pass a floating point number to this function. Normally the Bitwise NOT operation only works with whole numbers. I am only using the fsub so you don't get math errors with really large/small numbers.

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SnarlingSheep
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PostPosted: Thu Oct 21, 2004 7:19 pm    Post subject: Reply with quote

Updated, now has:
Bitwise AND, OR, XOR, NOT, Shift-Left, Shift-Right and a RGB function.

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PostPosted: Mon Mar 27, 2006 6:36 pm    Post subject: Reply with quote

Hey SS,
Below is a few more Bitwise things that just came up.

Code:

  #DEFINE FUNCTION,SSHIWORD
  #DEFINE FUNCTION,SSLOWORD
  #DEFINE FUNCTION,SSHIBYTE
  #DEFINE FUNCTION,SSLOBYTE
  #DEFINE FUNCTION,SSMAKEWORD
  #DEFINE FUNCTION,SSMAKELONG
:Example
  %%wParam = 123123123
  %%Loword = @SSLOWORD(%%wParam)
  %%Hiword = @SSHIWORD(%%wParam)
  %%Lobyte = @SSLOBYTE(%%Loword)
  %%Hibyte = @SSHIBYTE(%%Loword)
  %%mkWord = @SSMAKEWORD(%%Lobyte,%%Hibyte)
  %%mklong = @SSMAKELONG(%%mkWord,%%Hiword)
  Info Loword = %%Loword@CR()Hiword = %%Hiword@CR()Lobyte = %%Lobyte@CR()Hibyte = %%Hibyte@CR()MakeWord = %%mkWord@CR()MakeLong = %%mklong@CR()Original = %%wParam
Exit

:SSHIWORD
  # To get the HIWord of a DWORD number
  %a = %1
  %%SSBRS16 = @SSBitRShift(%a,16)
  %%SSHWResult = @SSBitAnd(%%SSBRS16,65535)
Exit %%SSHWResult

:SSLOWORD
  # To get the LOWord of a DWORD number
  %a = %1
  %%SSLWResult = @SSBitAnd(%a,65535)
Exit %%SSLWResult

:SSHIBYTE
  #To get the HIByte of a WORD number
  %a = %1
  %%SSBRS = @SSBitRShift(%a,Cool
  %%SSHBResult =  @SSBitAnd(%%SSBRS,255)
Exit %%SSHBResult

:SSLOBYTE
  #To get the LOByte of a WORD number
  %a = %1
  %%SSLBResult = @SSBitAnd(%a,255)
Exit %%SSLBResult

:SSMAKEWORD
  #To make a WORD from 2 BYTE values
  %a = %1
  %b = %2
  %%SSBLS = @SSBitLShift(%b,Cool
  %%SSMWResult = @SSBitOr(%a,%%SSBLS)
Exit %%SSMWResult

:SSMAKELONG
  #To make a DWORD from 2 WORD values
  %a = %1
  %b = %2
  %%SSBLS = @SSBitLShift(%b,16)
  %%SSMLResult = @SSBitOr(%a,%%SSBLS)
Exit %%SSMLResult


Ok I have updated this and made sure they work with an included example for ya. Wink You will need the rest of the SSBitwise functions for these to work.

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PostPosted: Thu Jul 10, 2008 6:20 pm    Post subject: Reply with quote

Hey SS,
Here is more code... I made a centralized function called @baseconv() to convert a number from base 2 to 62. @baseconv() requires @vdsfpow() to perform the conversions. Please see the code below...

Code:

#:SSDec2Bin
#  %%SSD2Bresult = ""
#  %%SSD2BintValue = %1
#  While @GREATER(%%SSD2BintValue,0)
#    %%SSD2Bi = @MOD(%%SSD2BIntValue,2)
#    %%SSD2Bi = @FADD(%%SSD2Bi,1)
#    %%SSD2BintValue = @DIV(%%SSD2BintValue,2)
#    %%SSD2Bresult = @SUBSTR("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ",%%SSD2Bi,%%SSD2Bi)%%SSD2Bresult
#  WEND
#  exit %%SSD2Bresult

:SSDec2Bin
  # Replaced with a central function to perform generic base conversions.
  %%SSD2BintValue = %1
  %%SSD2Bresult = @BaseConv(%%SSD2BintValue,10,2)
Exit %%SSD2Bresult

 
#:SSBin2Dec
#  %%SSB2DResult = 0
#  %%SSB2DX = 1
#  %%SSB2DStrValue = %1
#  REPEAT
#    %%SSB2DCharValue = @POS(@UPPER(@SUBSTR(%%SSB2DStrValue,%%SSB2DX,%%SSB2DX)),"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ")
    #return -1 if character is not supported by base
#    If @GREATER(%%SSB2DCharValue,2)
#     %%SSB2DResult = -1
#     %%SSB2DX = @SUCC(@LEN(%%SSB2DStrValue))
#   END
#    %%SSB2DResult = @FADD(@FMUL(%%SSB2DResult,2),@FSUB(%%SSB2DcharValue,1))
#   %%SSB2DX = @SUCC(%%SSB2DX)
#  UNTIL @GREATER(%%SSB2DX,@LEN(%%SSB2DStrValue))
#  exit %%SSB2DResult

:SSBin2Dec
  # Replaced with a central function to perform generic base conversions.
  %%SSB2DStrValue = %1
  %%SSB2Dresult = @BaseConv(%%SSB2DStrValue,2,10)
Exit %%SSB2Dresult

 
#:SSHex2Dec
#  %%SSH2DHex = %1
#  %%SSH2D = 0
#  %%SSH2DX = 1
#  repeat
#    %%SSH2DChar = @UPPER(@SUBSTR(%%SSH2DHex,%%SSH2DX,%%SSH2DX))
#    %%SSH2DPos = @FSUB(@POS(%%SSH2DChar,"0123456789ABCDEF"),1)
#    %%SSH2D = @FADD(@FMUL(%%SSH2D,16),%%SSH2DPos)
#    %%SSH2DX = @SUCC(%%SSH2DX)
#  until @GREATER(%%SSH2DX,@LEN(%%SSH2DHex))
#  exit %%SSH2D

:SSHex2Dec
  # Replaced with a central function to perform generic base conversions.
  %%SSH2DHex = %1
  %%SSH2D = @BaseConv(%%SSH2DHex,16,10)
Exit %%SSH2D

:BaseConv
  # This function will convert any number base to any number base from base2 to base62
 
  # Returns the %%InNumber variable as %R converted to the requested base in %%OutBase.
  %R =
  # Value to convert
  %%InNumber = %1
  # Base for %%InNumber
  %%InBase = %2
  # Base to convert %%InNumber too
  %%OutBase = %3
 
  # Data dictionary
  %D = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
  %%MaxBase = @len(%D)
  %%DecVal = 0
  If @Greater(%%InBase,%%MaxBase)@Greater(%%OutBase,%%MaxBase)@Less(%%InBase,2)@Less(%%OutBase,2)
    # If the bases specified are above 62 or below 2 throw Arithmetic error
    Error 26
  Else
    # Start by converting the value to Base10
    %%InNumberLen = @Len(%%InNumber)
    %%DecVal = 0
    %J = 1
    Repeat
      %K = 1
      Repeat
        # Hmmm I wouldn't try to figure this loop out just use the converter....:)
        # Basicly it treats the %D data dictionary and the input value like the old decoder rings.
        # I guess I am showing my age with this one lol...
        If @Equal(@substr(%%InNumber,%J,%J),@SubStr(%D,%K,%K),EXACT)
           %%DecVal = @Sum(%%DecVal,@Name(@fadd(@fmul(@pred(%K),@VDSFPow(%%InBase,@diff(%%InNumberLen,%J))),.5)))
        end   
        %K = @succ(%K)
      Until @Greater(%K,%%InBase)
      %J = @succ(%J)
    Until @Greater(%J,%%InNumberLen)
   
    # Now convert the value to the requested Base
    Repeat
      %X = @Mod(%%DecVal,%%OutBase)
      If @Greater(%X,9)
        %X = @succ(%X)
        %R = @substr(%D,%X,%X)%R
      Else
        %R = %X%R
      End
      %%DecVal = @div(%%DecVal,%%OutBase)
    Until @Zero(%%DecVal)
  End
 
Exit %R

:VDSFPOW
  # A simple function to raise a number
  # to the power of some number using the VDS
  # builtin floating point arithmitic functions
  #x = a^b
  %a = %1
  %b = %2
  %%aisneg = @pos(-,%a)
  %%bisneg = @pos(-,%b)
  If @equal(%%aisneg,1)
    %a = @strdel(%a,1)
  End
  %x = @fmul(%b,@fln(%a))
  if @equal(%%aisneg,1)
    # really needs a floating mod here but if your concerned
    # about not having a floating point mod then you can use
    # the GadgetX.dll @lfmod function.
    %%iseven = @mod(@fint(%b),2)
    if @Zero(%%iseven)
      %x = @fexp(%x)
    else
      %x = -@fexp(%x)
    end
  else
   %x = @fexp(%x)
  end
Exit %x 

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uvedese
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Joined: 21 Jan 2006
Posts: 159
Location: Spain

PostPosted: Sun Jul 13, 2008 2:02 pm    Post subject: Reply with quote

Hi everybody Very Happy
CodeScript wrote

Quote:
Nice work. Good when one doesn't have to process a large amount of data(encrypting a file) or when speed is everything


There is a way to gain speed in the Dec2Bin function. We can divide by 16, not by 2 and a list has the values of operations...

Code:
  #define function,Dec2Bin

  list create,1
  list loadtext,1
"0000
"0001
"0010
"0011
"0100
"0101
"0110
"0111
"1000
"1001
"1010
"1011
"1100
"1101
"1110
"1111

  info @dec2bin(255)
  stop

:Dec2Bin
  %%D2Bresult = ""
  while @greater(%1,0)
    %%D2Bresult = @item(1,@mod(%1,16))%%D2Bresult
    %1 = @div(%1,16)
  wend
  exit @substr(%%D2Bresult"X",@pos(1,%%D2Bresult),-1)


Good job SnarlingSheep and dragonsphere
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vdsalchemist
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Joined: 23 Oct 2001
Posts: 1448
Location: Florida, USA

PostPosted: Mon Jul 14, 2008 2:46 pm    Post subject: Reply with quote

uvedese,
If you try my new @BaseConv() you will find that it is pretty fast. I am not saying it is as fast as a non-interpreted language but it should be fast enough to do want you want. As for CodeScript's comment I think he was comparing to a non-interpreted language such as Delphi, C/C++, and others. Besides all these functions are in GadgetX and I think CodeScript has a DLL that does the same so if you need speed IMHO that is the way I would go.

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