[nsz/math2, PATCH] e_exp2f.c: Support multiarch

[Szabolcs Nagy]

On 27/09/17 00:05, H.J. Lu wrote:
> This is for nsz/math2 branch.
>  

i figured out how to update a branch so nsz/math == nsz/math2 now.

> This is to support compiling e_exp2f.c more than once for multiarch.
> 

shall i do this for all new functions (logf, log2f, powf)?

> 	* sysdeps/ieee754/flt-32/e_exp2f.c [__exp2f] (__ieee754_exp2f,
> 	__exp2f_finite, exp2f): Skip.
> ---
>  sysdeps/ieee754/flt-32/e_exp2f.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/sysdeps/ieee754/flt-32/e_exp2f.c b/sysdeps/ieee754/flt-32/e_exp2f.c
> index b53a919a0d..e54a88f692 100644
> --- a/sysdeps/ieee754/flt-32/e_exp2f.c
> +++ b/sysdeps/ieee754/flt-32/e_exp2f.c
> @@ -86,6 +86,9 @@ __exp2f (float x)
>    y = y * s;
>    return (float) y;
>  }
> +
> +#ifndef __exp2f
>  strong_alias (__exp2f, __ieee754_exp2f)
>  strong_alias (__exp2f, __exp2f_finite)
>  versioned_symbol (libm, __exp2f, exp2f, GLIBC_2_27);
> +#endif
>