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Hex To Decimal and Decimal to Hex

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MrTAToad:
No checking is done with the conversion from hex to decimal to make sure the passed string is a valid hex character.


--- Code: (glbasic) ---// --------------------------------- //
// Project: HexADecimal
// Start: Tuesday, March 03, 2009
// IDE Version: 6.174

DEBUG "Hex : "+decToHex$(255,4)+"\n"
DEBUG "Dec : "+hexToDec("FFFF")+"\n"
END

FUNCTION decToHex$:value%,length%=4
LOCAL digit%
LOCAL temp%
LOCAL result$

IF length%<=0
RETURN "0"
ENDIF

result$=""
FOR digit%=length% TO 1 STEP -1
temp%=MOD(value%,16)
IF temp%<10
result$=CHR$(temp%+48)+result$
ELSE
result$=CHR$((temp%-10)+65)+result$
ENDIF

value%=value%/16
NEXT

RETURN result$
ENDFUNCTION

FUNCTION hexToDec%:hex$
LOCAL i%
LOCAL j%
LOCAL loop%

i%=0
j%=0
FOR loop%=0 TO LEN(hex$)-1
i%=ASC(MID$(hex$,loop%,1))-48
IF 9<i%
DEC i%,7
ENDIF

j%=j%*16
j%=bOR(j%,bAND(i,15))
NEXT

RETURN j
ENDFUNCTION

--- End code ---

Kitty Hello:
Very nice!

MrTAToad:
Thanks!

ketil:
It's cool, but why not just go inline C and sprintf or something ?

Moru:
Because that would exclude all GLBasic users that doesn't have the full package.

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