[PATCH] x86_64: Add sinh with FMA

[Paul Zimmermann]

       Hi H.J.,

I get no improvement in accuracy. The largest known ulp error is still
the same:

sinh 0 -1 -0x1.633c654fee2bap+9 [2] [1.93] 1.92222 1.922214006544865

Maybe the FMA is not used for large inputs?

Best regards,
Paul