Re: STDCXX examples fails and reasons [MSVC]

[Martin Sebor]

Farid Zaripov wrote:

-----Original Message-----

From: Martin Sebor [EMAIL PROTECTED] Sent: Thursday, June 21, 2007 8:56 PM

To: stdcxx-dev@incubator.apache.org
Subject: Re: STDCXX examples fails and reasons [MSVC]

[...]

limits.cpp should produce the qnan for Quiet NAN and snan for
Signaling NAN on all platforms.

  I can't find this requirement in standard.

It's not in the C++ standard but it is in C99, under fprintf(),
the f and F conversion specifier:

    A double argument representing an infinity is converted
    in one of the styles [-]inf or [-]infinity — which style
    is implementation-defined. A double argument representing
    a NaN is converted in one of the styles [-]nan or
    [-]nan(n-char-sequence) — which style, and the meaning
    of any n-char-sequence, is implementation-defined. The
    F conversion specifier produces INF, INFINITY, or NAN
    instead of inf, infinity, or nan, respectively.

Martin