Bug#503202: libc6-dev: math_errhandling isn't defined anywhere

[Matthew Vernon <m.c.vernon@warwick.ac.uk>]

Package: libc6-dev
Version: 2.3.6.ds1-13etch7
Severity: important

Hi,

math.h has the following in it:
/* Bitmasks for the math_errhandling macro.  */
# define MATH_ERRNO     1       /* errno set by math functions.  */
# define MATH_ERREXCEPT 2       /* Exceptions raised by math functions.  
*/

but no-where is math_errhandling actually defined! This breaks code 
wanting to check how domain errors in floating-point code are handled 
(amongst other things). Section 7.12.9 of C99 discusses MATH_ERRNO, 
MATH_ERREXCEPT, and math_errhandling.

SuSv3 also requires math_errhandling to be present:
http://www.opengroup.org/onlinepubs/009695399/basedefs/math.h.html

Regards,

Matthew

-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.20-2-macpro-amd64
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)

Versions of packages libc6-dev depends on:
ii  libc6                  2.3.6.ds1-13etch7 GNU C Library: Shared libraries
ii  linux-kernel-headers   2.6.18-7          Linux Kernel Headers for developme

Versions of packages libc6-dev recommends:
ii  gcc [c-compiler]              4:4.1.1-15 The GNU C compiler
ii  gcc-3.4 [c-compiler]          3.4.6-5    The GNU C compiler
ii  gcc-4.1 [c-compiler]          4.1.1-21   The GNU C compiler

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