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<== Date ==> <== Thread ==>

Subject: Re: mask for bitwise operation in CALC record
From: Andrew Johnson <anj@aps.anl.gov>
To: tech-talk@aps.anl.gov
Cc: Eric Norum <wenorum@lbl.gov>
Date: Tue, 5 Jun 2012 11:46:06 -0500
Hi Eric,

On Jun 5, 2012, at 6:11 AM, Dirk Zimoch wrote:
>
> I think adding something like this to epicsStrtod should fix the problem:
>
> if (epicsStrnCaseCmp("0x", cp, 2) == 0) {
>  return (double)strtoul(str, endp, 16);
> }

I'll be using strtol() instead in the 3.15 code, so -0x1 works.

On 2012-06-05 Eric Norum wrote:
> The code with that change doesn't completely match the semantics of strtod
> as presented in the C99 standard, but it's certainly better than the
> current code.

What else are we missing?  I don't have the C99 standard to look at here.

> BTW -- does vxWorks still not supply a working strtod?  I
> think that it is the only system that doesn't just define epicsStrtod as
> strtod.

The wording in the vxWorks 6.8 manpage is exactly the same as Dirk posted from 
vxWorks 5.5.

No, we use our version of epicsStrtod() on Windows, Cygwin, vxWorks and 
Solaris.  I have a branch for 3.15 where I've been working on the numeric 
conversions, I'll add some tests for the native strtod().

- Andrew
-- 
Never interrupt your enemy when he is making a mistake.
-- Napoleon Bonaparte

Replies:
Re: mask for bitwise operation in CALC record Eric Norum
References:
mask for bitwise operation in CALC record haquin
Re: mask for bitwise operation in CALC record Dirk Zimoch
Re: mask for bitwise operation in CALC record Eric Norum

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