每个时间步显示二个结果，为什么。

volwang

取得变时间步长，
每个时间步长报的结果为2个
/*==============================================================================
用了宏
DEFINE_EXECUTE_AT_END(exec_end)
DEFINE_CG_MOTION(body_motion,dt,cg_vel,cg_omega,time,dtime)
DEFINE_RW_FILE(writer,fp)
不知道为什么。
time = 0.000074,  v_pre = 150.000000,  f_glob0 = 0.000000 ,  f_glob[0] = 0.000000,  f_glob1[0] = 0.000000
time = 0.000091,  v_pre = 147.154068,  f_glob0 = -5219857.500000 ,  f_glob[0] = -3633772.750000,  f_glob1[0] = -1586084.625000
time = 0.000091,  v_pre = 147.154068,  f_glob0 = -5219857.500000 ,  f_glob[0] = -3633772.750000,  f_glob1[0] = -1586084.625000
time = 0.000108,  v_pre = 147.120361,  f_glob0 = -59530.246094 ,  f_glob[0] = -92880.710938,  f_glob1[0] = 33350.464844
time = 0.000108,  v_pre = 147.120361,  f_glob0 = -59530.246094 ,  f_glob[0] = -92880.710938,  f_glob1[0] = 33350.464844