[PATCH, libstdc++] PR libstdc++/68397 std::tr1::expint fails ... long double arguments.

[Jonathan Wakely]

On 20/04/17 10:58 -0400, Ed Smith-Rowland wrote:
>Here is a patch for
>
>  PR libstdc++/68397 std::tr1::expint fails in __expint_En_cont_frac 
>for some long double arguments due to low __max_iter value.
>
>The proposed resolution of increasing the max_iter to 1000 is a simple 
>and obvious fix.
>
>Built and tested on x86_64-linux.
>
>OK?

OK for trunk, thanks.