Required Instance Methodswift 6.0.1Swift

    round(_:)

    Rounds the value to an integral value using the specified rounding rule.

    mutating func round(_ rule: FloatingPointRoundingRule)
    Mangled symbol

    sSF5roundyys25FloatingPointRoundingRuleOFWhat are these?

    FNV24: [5Y6FW]

    Parameters

    rule

    The rounding rule to use.

    The following example rounds a value using four different rounding rules:

    // Equivalent to the C 'round' function:
var w = 6.5
w.round(.toNearestOrAwayFromZero)
// w == 7.0

// Equivalent to the C 'trunc' function:
var x = 6.5
x.round(.towardZero)
// x == 6.0

// Equivalent to the C 'ceil' function:
var y = 6.5
y.round(.up)
// y == 7.0

// Equivalent to the C 'floor' function:
var z = 6.5
z.round(.down)
// z == 6.0

    For more information about the available rounding rules, see the FloatingPointRoundingRule enumeration. To round a value using the default “schoolbook rounding”, you can use the shorter round() method instead.

    var w1 = 6.5
w1.round()
// w1 == 7.0

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