Files
harbour-core/harbour/contrib/libnf/hex2dec.prg
Przemyslaw Czerpak 8db4f58efb 2007-08-08 15:20 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
* harbour/contrib/libnf/at2.prg
  * harbour/contrib/libnf/min2dhm.prg
  * harbour/contrib/libnf/ontick.c
  * harbour/contrib/libnf/sqzn.prg
  * harbour/contrib/libnf/bytexor.prg
  * harbour/contrib/libnf/asum.prg
  * harbour/contrib/libnf/sleep.prg
  * harbour/contrib/libnf/any2any.prg
  * harbour/contrib/libnf/origin.c
  * harbour/contrib/libnf/mouse.c
  * harbour/contrib/libnf/stod.c
  * harbour/contrib/libnf/vertmenu.prg
  * harbour/contrib/libnf/aredit.prg
  * harbour/contrib/libnf/n2color.c
  * harbour/contrib/libnf/xbox.prg
  * harbour/contrib/libnf/hex2dec.prg
  * harbour/contrib/libnf/getver.c
  * harbour/contrib/libnf/Makefile
  * harbour/contrib/libnf/invclr.prg
  * harbour/contrib/libnf/popadder.prg
  * harbour/contrib/libnf/d2e.prg
  * harbour/contrib/libnf/anomatch.prg
  * harbour/contrib/libnf/color2n.c
  * harbour/contrib/libnf/datecnfg.prg
  * harbour/contrib/libnf/easter.prg
  * harbour/contrib/libnf/ntow.prg
  * harbour/contrib/libnf/floptst.prg
  * harbour/contrib/libnf/pchr.prg
  * harbour/contrib/libnf/tbwhile.prg
  * harbour/contrib/libnf/e2d.prg
  * harbour/contrib/libnf/sysmem.prg
  * harbour/contrib/libnf/dfile.prg
  * harbour/contrib/libnf/clrsel.prg
  + harbour/contrib/libnf/fttext.c
  + harbour/contrib/libnf/putkey.c
    * basic cleanup and syncing with some of xHarbour fixes and extensions.
      I'd like to ask Windows users to update non GNU make file

  * harbour/source/pp/ppcore.c
    + added support for .T., .F., .Y., .N. in PP and #IF ... / #ELIF ...
      expressions. It was reported by Nick Van Dyck on xHarbour devel list
      that old PP supported it. I haven't known that old PP suported .T.
      and .F. in #IF directive. Please not that there are other diferences
      between new PP and the old one in expresions which can be used in
      #IF ... / #ELIF directives. New PP supports C like expressions with
      support for pseudo functions like defined(), operates on integer
      numbers only to not damage 64bit values during conversion to double
      and keep C compatible results (the old one used double values) and
      is much more restrictive in checking for valid expression.
2007-08-08 13:21:15 +00:00

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/*
* File......: HEX2DEC.PRG
* Author....: Robert A. DiFalco
* CIS ID....: ?
*
* This is an original work by Robert DiFalco and is placed in the
* public domain.
*
* Modification history:
* ---------------------
*
* Rev 1.3 17 Aug 1991 15:32:56 GLENN
* Don Caton fixed some spelling errors in the doc
*
* Rev 1.2 15 Aug 1991 23:03:42 GLENN
* Forest Belt proofread/edited/cleaned up doc
*
* Rev 1.1 14 Jun 1991 19:51:58 GLENN
* Minor edit to file header
*
* Rev 1.0 01 Apr 1991 01:01:28 GLENN
* Nanforum Toolkit
*
*/
/*
* $DOC$
* $FUNCNAME$
* FT_HEX2DEC()
* $CATEGORY$
* Conversion
* $ONELINER$
* Convert a hex number to decimal
* $SYNTAX$
* FT_HEX2DEC( <cHexNum> ) -> nDecNum
* $ARGUMENTS$
* <cHexNum> is a character string representing a hex number.
* $RETURNS$
* A decimal number.
* $DESCRIPTION$
* Converts a hexadecimal number to a BASE 10 decimal number.
* Useful for using FT_INT86().
* $EXAMPLES$
* FT_INT86( HEX2DEC( "21" ), aRegs )
*
* Converts 21h, the Dos Interrupt, to its decimal equivalent,
* 33, for use by FT_INT86().
* $END$
*/
#define HEXTABLE "0123456789ABCDEF"
#ifdef FT_TEST
FUNCTION MAIN( cHexNum )
QOut( FT_HEX2DEC( cHexNum ) )
return ( nil )
#endif
FUNCTION FT_HEX2DEC( cHexNum )
local n, nDec := 0, nHexPower := 1
for n := len( cHexNum ) to 1 step -1
nDec += ( at( subs( upper(cHexNum), n, 1 ), HEXTABLE ) - 1 ) * nHexPower
nHexPower *= 16
next
RETURN nDec