MPFR_ASSERTD (MPFR_IS_ZERO (x));returnmpfr_set_ui (y,1, rnd_mode); } } MPFR_SAVE_EXPO_MARK (expo);/* cos(x) = 1-x^2/2 + ..., so error < 2^(2*EXP(x)-1) */expx = MPFR_GET_EXP (x); MPFR_SMALL_INPUT_AFTER_SAVE_EXPO (y, __gmpfr_one,-2* expx,1,0, rnd...