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Date: Sun, 09 Nov 2003 22:54:36 +0000
From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
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To: djgpp-workers AT delorie DOT com
Subject: Re: C99 Functions Under Development and Checkout
References: <140 DOT 1c1f96eb DOT 2cdfe659 AT aol DOT com> <3FAE99D9 DOT 76176B19 AT phekda DOT freeserve DOT co DOT uk> <7137-Sun09Nov2003225747+0200-eliz AT elta DOT co DOT il>
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Reply-To: djgpp-workers AT delorie DOT com

Hello.

Eli Zaretskii wrote:
> 
> > Date: Sun, 09 Nov 2003 19:47:37 +0000
> > From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
> >
> > I just re-read the C99 standard and I don't see where it says the user can
> > modify math_errhandling.
> 
> Does it say whether the user could take an address of
> math_errhandling?

The C99 standard, section 7.12, paragraph 9, says:

"The macros

MATH_ERRNO
MATH_ERREXCEPT

expand to the integer constants 1 and 2, respectively; the macro
math_errhandling
expands to an expression that has type int and the value MATH_ERRNO,
MATH_ERREXCEPT, or the bitwise OR of both. The value of math_errhandling is
constant for the duration of the program. It is unspecified whether
math_errhandling is a macro or an identifier with external linkage. If a macro
definition is suppressed or a program defines an identifier with the name
math_errhandling, the behavior is undefined."

Since math_errhandling can be a macro, the answer is no.

Bye, Rich =]

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]

"You can't evaluate a man by logic alone." -- McCoy, "I, Mudd", Star Trek