assert(lrint(4.5) == 4);
assert(lrint(5.5) == 6);
assert(lrint(-4.5) == -4);
assert(lrint(-5.5) == -6);
assert(lrint(int.max - 0.5) == 2147483646L);
assert(lrint(int.max + 0.5) == 2147483648L);
assert(lrint(int.min - 0.5) == -2147483648L);
assert(lrint(int.min + 0.5) == -2147483648L);
Rounds x to the nearest integer value, using the current rounding mode.
This is generally the fastest method to convert a floating-point number to an integer. Note that the results from this function depend on the rounding mode, if the fractional part of x is exactly 0.5. If using the default rounding mode (ties round to even integers) lrint(4.5) == 4, lrint(5.5)==6.