roundToDouble method - double class - dart:core library (original) (raw)
roundToDouble abstract method
double roundToDouble()
override
Returns the integer double value closest to this
.
Rounds away from zero when there is no closest integer:(3.5).roundToDouble() == 4
and (-3.5).roundToDouble() == -4
.
If this is already an integer valued double, including -0.0
, or it is not a finite value, the value is returned unmodified.
For the purpose of rounding, -0.0
is considered to be below 0.0
, and -0.0
is therefore considered closer to negative numbers than 0.0
. This means that for a value d
in the range -0.5 < d < 0.0
, the result is -0.0
.
print(3.0.roundToDouble()); // 3.0
print(3.25.roundToDouble()); // 3.0
print(3.5.roundToDouble()); // 4.0
print(3.75.roundToDouble()); // 4.0
print((-3.5).roundToDouble()); // -4.0
Implementation
double roundToDouble();