Re: patch for g++ -ansi for math.h

["J. Johnston" <jjohnstn at cygnus dot com>]

Geoffrey Keating wrote:
> 
> When 'g++ -ansi' is used, __STRICT_ANSI__ is defined.  Normally this
> is exactly what you'd want.  However, the C++ standard adds a few
> single-precision math functions to the usual list of C89 math.h
> functions, and this was causing
> 
> #include <complex>
> 
> to fail when built with 'g++ -ansi' and newlib.
> 
> On Linux, this is dealt with by defining _GNU_SOURCE in g++, which
> declares these and many other things.
> 
> OK to commit?
> 

Yes, go ahead.

-- Jeff J.

> --
> Geoff Keating <geoffk@redhat.com>
> 
> ===File ~/patches/newlib-mathfloat.patch====================
> 2001-10-22  Geoffrey Keating  <geoffk@redhat.com>
> 
>         * libc/include/math.h: The C++ standard adds the single-precision
>         versions of the elementary functions.
> 
> Index: libc/include/math.h
> ===================================================================
> RCS file: /cvs/src/src/newlib/libc/include/math.h,v
> retrieving revision 1.7
> diff -p -u -p -r1.7 math.h
> --- math.h      2001/01/29 22:40:50     1.7
> +++ math.h      2001/10/22 20:06:54
> @@ -114,6 +114,10 @@ extern double drem _PARAMS((double, doub
> 
>  #endif /* ! defined (_REENT_ONLY) */
> 
> +#endif /* ! defined (__STRICT_ANSI__) */
> +
> +#if !defined(__STRICT_ANSI__) || defined(__cplusplus)
> +
>  /* Single precision versions of ANSI functions.  */
> 
>  extern float atanf _PARAMS((float));
> @@ -141,6 +145,10 @@ extern float powf _PARAMS((float, float)
>  extern float sqrtf _PARAMS((float));
>  extern float fmodf _PARAMS((float, float));
>  #endif /* ! defined (_REENT_ONLY) */
> +
> +#endif /* !defined(__STRICT_ANSI__) || defined(__cplusplus) */
> +
> +#ifndef __STRICT_ANSI__
> 
>  /* Other single precision functions.  */
> 
> ============================================================