_sp_maddf
return _sp_maddf(z, x, y, 0);
return _sp_maddf(z, x, y, MADDF_NEGATE_PRODUCT);
return _sp_maddf(z, x, y, 0);
return _sp_maddf(z, x, y, MADDF_NEGATE_ADDITION);
return _sp_maddf(z, x, y, MADDF_NEGATE_PRODUCT|MADDF_NEGATE_ADDITION);
return _sp_maddf(z, x, y, MADDF_NEGATE_PRODUCT);