Re: reading a float?

To: info-dylan@ai.mit.edu
Subject: Re: reading a float?
From: Scott Ribe <sribe@miqs.com>
Date: Thu, 20 Apr 2000 12:15:02 -0400 (EDT)
References: <brucehoult-1904001153420001@bruce.bgh> <hX8L4.6255$QX1.232123@typhoon.ne.mediaone.net> <brucehoult-1904001604070001@bruce.bgh> <8F1BE6261chrisdoubleconz@202.27.184.33> <ravr9c1vx51.fsf@telnet.math.fu-berlin.de> <brucehoult-2104000026580001@bruce.bgh>
Xref: traf.lcs.mit.edu comp.lang.dylan:11884

Bruce Hoult wrote:
> 
> 1) punt and do whatever the C library on the given platform does

It's been implied that this may be somewhat limited and not cover all
formats? If so, I would think the answer is obvious: Dylan code to
reduce the input string to a canonical representation, followed by C
library conversion.

I'm not sure what gives here; I've worked with other libraries where the
string class included conversion to/from ints using the C libraries, but
did not do so for floats even though there was a routine in the C
libraries. Whether or not the C routines were complete wrt to the output
formats of a float, they worked for the simple cases I threw at them.

> 4) do platform-specific bit-twiddling.

Argh. I had to do this once for converting binary representations. Some
cases are easy; some are gnarly.

Follow-Ups:

Re: reading a float?

From: brucehoult@pobox.com (Bruce Hoult)

References:

reading a float?

From: brucehoult@pobox.com (Bruce Hoult)

Re: reading a float?

From: "Scott McKay" <swm@mediaone.net>

Re: reading a float?

From: brucehoult@pobox.com (Bruce Hoult)

Re: reading a float?

From: chris@double.co.nz (Chris Double)

Re: reading a float?

From: David Lichteblau <lichtebl@math.fu-berlin.de>

Re: reading a float?

From: brucehoult@pobox.com (Bruce Hoult)