operator-() [1/8]

const mpreal mpfr::operator- ( const double b, const mpreal & a )

inline

Definition at line 1321 of file mpreal.h.

{
#if (MPFR_VERSION >= MPFR_VERSION_NUM(2,4,0))
    mpreal x(0, mpfr_get_prec(a.mpfr_ptr()));
    mpfr_d_sub(x.mpfr_ptr(), b, a.mpfr_srcptr(), mpreal::get_default_rnd());
    return x;
#else
    mpreal x(b, mpfr_get_prec(a.mpfr_ptr()));
    x -= a;
    return x;
#endif
}