10.2.1 Member Types

enum round_mode { 
  round_down       = 1, 
  round_up         = 2, 
  round_tonearest  = 3, 
  round_towardzero = 4, 
  round_error      = 99 
};

round_down

Round downwards.

round_up

Round upwards.

round_tonearest

Round toward the nearest number.

round_towardzero

Round toward towards zero.

round_error

Error if the rounding type is unknown or an error occurred.