int truncate( )

Returns the integer obtained by discarding any fractional digits from this.

If this is not finite (NaN or infinity), throws an UnsupportedError.

Source

/**
 * Returns the integer obtained by discarding any fractional
 * digits from `this`.
 *
 * If `this` is not finite (`NaN` or infinity), throws an [UnsupportedError].
 */
int truncate();