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Add Math.round

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This commit is contained in:
Robert Krimen
2013-02-27 15:50:52 -08:00
parent 5baaa111e1
commit 252e132594
3 changed files with 26 additions and 0 deletions
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9
builtin_math.go
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@@ -115,6 +115,15 @@ func builtinMath_random(call FunctionCall) Value {
return toValue(rand.Float64())
}
func builtinMath_round(call FunctionCall) Value {
number := toFloat(call.Argument(0))
value := math.Floor(number + 0.5)
if value == 0 {
value = math.Copysign(0, number)
}
return toValue(value)
}
func builtinMath_sin(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue(math.Sin(number))