Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!cs.utexas.edu!uunet!iconsys!tom
From: tom@iconsys.UUCP (Tom Kimpton)
Newsgroups: comp.sys.mac.programmer
Subject: Re: conversion between hex and dec
Keywords: conversions
Message-ID: <382@iconsys.UUCP>
Date: 26 Jun 89 22:51:30 GMT
References: <1300@osupyr.mps.ohio-state.edu> <354@mountn.dec.com>
Reply-To: tom@iconsys.UUCP (Tom Kimpton)
Organization: ICON International, Inc., Orem, UT
Lines: 64

In article <354@mountn.dec.com> minow%thundr.dec@decwrl.dec.com (Martin Minow) writes:
>
>Paul Nevai asks for conversion routines between decimal and hex.  Here's
>a subroutine to convert from hex to ascii.  Conversion from strings to
>hex is about as simple.
>
>	void
>	hex_to_string(value, result)
>	unsigned short	value;
>	Str255		result;
>	{
>		int	i, v;
>		result[0] = (sizeof value) * 2;	/* 8-bit bytes!		*/
>		for (i = result[0]; i >= 1; --i) {
>		    v = value & 0xF;
>		    value >>= 4;
>		    result[i] = (v <= 9) ? v + '0' : v + ('A' - 10);
		    result[i] = "0123456789ABCDEF"[v];
>		}
>	}
>
>Martin Minow
>minow%thundr.dec@decwrl.dec.com

I saw this in a compiler routine to output hex constants.  I
thought it was kind of cute.

Or ...

	result[0] = sprintf(&result[1],format_string,value) - 1;
		/* subtract 1 for the NULL added to the string */
	
Look in your manual for the numerous formats.

If you want to convert incoming strings, in various formats,
look at the man section for "sscanf()", remembering the
difference between short (int) and long pointers (byte you every time).

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-- 
Tom Kimpton                    UUCP: {uunet,caeco,nrc-ut}!iconsys!tom
Software Development Engineer  ARPANET: icon%byuadam.bitnet@cunyvm.cuny.edu
Icon International, Inc.       BITNET: icon%byuadam.bitnet (multi-user acct)
Orem, Utah 84058               PHONE: (801) 225-6888