msvcrt: improve accuracy of exp/pow/cosh and sinh

[Ruslan Kabatsayev]

Hi,

Are you sure this will be of any use if one selects SSE instead of x87
instruction set to handle doubles (like -mfpmath=sse)? No one
guarantees the functions like sinh will be evaluated on x87 FPU and
even that this legacy instruction set will used at all.

Regards,
Ruslan

On Sat, Apr 4, 2015 at 7:40 PM, Zheng Chen <chanchengcc at gmail.com> wrote:
> The default fpu_cw = 0x27f makes the exp/pow/cosh/sinh functions producing
> less accurate results. This patch temporally changes fpu_cw to 0x37f in
> these functions for more accurate results.
>
> Thanks to Qian for his ideas.
>
> This patch fixes parts of these two bugs: 37149, 37150
>
>
>