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package otto
import (
"math"
"math/rand"
)
// Math
func builtinMath_abs(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Abs(number))
}
func builtinMath_acos(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Acos(number))
}
func builtinMath_asin(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Asin(number))
}
func builtinMath_atan(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Atan(number))
}
func builtinMath_atan2(call FunctionCall) Value {
y := toFloat(call.Argument(0))
if math.IsNaN(y) {
return NaNValue()
}
x := toFloat(call.Argument(1))
if math.IsNaN(x) {
return NaNValue()
}
return toValue_float64(math.Atan2(y, x))
}
func builtinMath_cos(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Cos(number))
}
func builtinMath_ceil(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Ceil(number))
}
func builtinMath_exp(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Exp(number))
}
func builtinMath_floor(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Floor(number))
}
func builtinMath_log(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Log(number))
}
func builtinMath_max(call FunctionCall) Value {
switch len(call.ArgumentList) {
case 0:
return negativeInfinityValue()
case 1:
return toValue_float64(toFloat(call.ArgumentList[0]))
}
result := toFloat(call.ArgumentList[0])
if math.IsNaN(result) {
return NaNValue()
}
for _, value := range call.ArgumentList[1:] {
value := toFloat(value)
if math.IsNaN(value) {
return NaNValue()
}
result = math.Max(result, value)
}
return toValue_float64(result)
}
func builtinMath_min(call FunctionCall) Value {
switch len(call.ArgumentList) {
case 0:
return positiveInfinityValue()
case 1:
return toValue_float64(toFloat(call.ArgumentList[0]))
}
result := toFloat(call.ArgumentList[0])
if math.IsNaN(result) {
return NaNValue()
}
for _, value := range call.ArgumentList[1:] {
value := toFloat(value)
if math.IsNaN(value) {
return NaNValue()
}
result = math.Min(result, value)
}
return toValue_float64(result)
}
func builtinMath_pow(call FunctionCall) Value {
// TODO Make sure this works according to the specification (15.8.2.13)
x := toFloat(call.Argument(0))
y := toFloat(call.Argument(1))
if math.Abs(x) == 1 && math.IsInf(y, 0) {
return NaNValue()
}
return toValue_float64(math.Pow(x, y))
}
func builtinMath_random(call FunctionCall) Value {
return toValue_float64(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_float64(value)
}
func builtinMath_sin(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Sin(number))
}
func builtinMath_sqrt(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Sqrt(number))
}
func builtinMath_tan(call FunctionCall) Value {
number := toFloat(call.Argument(0))
return toValue_float64(math.Tan(number))
}
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