--TEST--
round(): Test RoundingMode enum.
--FILE--
<?php
foreach (RoundingMode::cases() as $mode) {
    foreach ([
        1.0,
        -1.0,
        1.2,
        -1.2,
        1.7,
        -1.7,
        1.5,
        -1.5,
        2.5,
        -2.5
    ] as $number) {
        printf("%-20s: %+.17g -> %+.17g\n", $mode->name, $number, round($number, 0, $mode));
    }
}
?>
--EXPECT--
HalfAwayFromZero    : +1 -> +1
HalfAwayFromZero    : -1 -> -1
HalfAwayFromZero    : +1.2 -> +1
HalfAwayFromZero    : -1.2 -> -1
HalfAwayFromZero    : +1.7 -> +2
HalfAwayFromZero    : -1.7 -> -2
HalfAwayFromZero    : +1.5 -> +2
HalfAwayFromZero    : -1.5 -> -2
HalfAwayFromZero    : +2.5 -> +3
HalfAwayFromZero    : -2.5 -> -3
HalfTowardsZero     : +1 -> +1
HalfTowardsZero     : -1 -> -1
HalfTowardsZero     : +1.2 -> +1
HalfTowardsZero     : -1.2 -> -1
HalfTowardsZero     : +1.7 -> +2
HalfTowardsZero     : -1.7 -> -2
HalfTowardsZero     : +1.5 -> +1
HalfTowardsZero     : -1.5 -> -1
HalfTowardsZero     : +2.5 -> +2
HalfTowardsZero     : -2.5 -> -2
HalfEven            : +1 -> +1
HalfEven            : -1 -> -1
HalfEven            : +1.2 -> +1
HalfEven            : -1.2 -> -1
HalfEven            : +1.7 -> +2
HalfEven            : -1.7 -> -2
HalfEven            : +1.5 -> +2
HalfEven            : -1.5 -> -2
HalfEven            : +2.5 -> +2
HalfEven            : -2.5 -> -2
HalfOdd             : +1 -> +1
HalfOdd             : -1 -> -1
HalfOdd             : +1.2 -> +1
HalfOdd             : -1.2 -> -1
HalfOdd             : +1.7 -> +2
HalfOdd             : -1.7 -> -2
HalfOdd             : +1.5 -> +1
HalfOdd             : -1.5 -> -1
HalfOdd             : +2.5 -> +3
HalfOdd             : -2.5 -> -3
TowardsZero         : +1 -> +1
TowardsZero         : -1 -> -1
TowardsZero         : +1.2 -> +1
TowardsZero         : -1.2 -> -1
TowardsZero         : +1.7 -> +1
TowardsZero         : -1.7 -> -1
TowardsZero         : +1.5 -> +1
TowardsZero         : -1.5 -> -1
TowardsZero         : +2.5 -> +2
TowardsZero         : -2.5 -> -2
AwayFromZero        : +1 -> +1
AwayFromZero        : -1 -> -1
AwayFromZero        : +1.2 -> +2
AwayFromZero        : -1.2 -> -2
AwayFromZero        : +1.7 -> +2
AwayFromZero        : -1.7 -> -2
AwayFromZero        : +1.5 -> +2
AwayFromZero        : -1.5 -> -2
AwayFromZero        : +2.5 -> +3
AwayFromZero        : -2.5 -> -3
NegativeInfinity    : +1 -> +1
NegativeInfinity    : -1 -> -1
NegativeInfinity    : +1.2 -> +1
NegativeInfinity    : -1.2 -> -2
NegativeInfinity    : +1.7 -> +1
NegativeInfinity    : -1.7 -> -2
NegativeInfinity    : +1.5 -> +1
NegativeInfinity    : -1.5 -> -2
NegativeInfinity    : +2.5 -> +2
NegativeInfinity    : -2.5 -> -3
PositiveInfinity    : +1 -> +1
PositiveInfinity    : -1 -> -1
PositiveInfinity    : +1.2 -> +2
PositiveInfinity    : -1.2 -> -1
PositiveInfinity    : +1.7 -> +2
PositiveInfinity    : -1.7 -> -1
PositiveInfinity    : +1.5 -> +2
PositiveInfinity    : -1.5 -> -1
PositiveInfinity    : +2.5 -> +3
PositiveInfinity    : -2.5 -> -2