forked from golang/hotime
152 lines
3.5 KiB
Go
152 lines
3.5 KiB
Go
package otto
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import (
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"math"
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"math/rand"
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)
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// Math
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func builtinMath_abs(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Abs(number))
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}
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func builtinMath_acos(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Acos(number))
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}
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func builtinMath_asin(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Asin(number))
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}
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func builtinMath_atan(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Atan(number))
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}
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func builtinMath_atan2(call FunctionCall) Value {
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y := call.Argument(0).float64()
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if math.IsNaN(y) {
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return NaNValue()
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}
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x := call.Argument(1).float64()
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if math.IsNaN(x) {
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return NaNValue()
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}
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return toValue_float64(math.Atan2(y, x))
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}
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func builtinMath_cos(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Cos(number))
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}
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func builtinMath_ceil(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Ceil(number))
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}
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func builtinMath_exp(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Exp(number))
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}
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func builtinMath_floor(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Floor(number))
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}
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func builtinMath_log(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Log(number))
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}
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func builtinMath_max(call FunctionCall) Value {
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switch len(call.ArgumentList) {
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case 0:
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return negativeInfinityValue()
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case 1:
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return toValue_float64(call.ArgumentList[0].float64())
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}
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result := call.ArgumentList[0].float64()
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if math.IsNaN(result) {
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return NaNValue()
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}
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for _, value := range call.ArgumentList[1:] {
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value := value.float64()
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if math.IsNaN(value) {
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return NaNValue()
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}
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result = math.Max(result, value)
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}
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return toValue_float64(result)
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}
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func builtinMath_min(call FunctionCall) Value {
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switch len(call.ArgumentList) {
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case 0:
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return positiveInfinityValue()
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case 1:
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return toValue_float64(call.ArgumentList[0].float64())
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}
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result := call.ArgumentList[0].float64()
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if math.IsNaN(result) {
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return NaNValue()
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}
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for _, value := range call.ArgumentList[1:] {
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value := value.float64()
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if math.IsNaN(value) {
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return NaNValue()
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}
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result = math.Min(result, value)
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}
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return toValue_float64(result)
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}
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func builtinMath_pow(call FunctionCall) Value {
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// TODO Make sure this works according to the specification (15.8.2.13)
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x := call.Argument(0).float64()
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y := call.Argument(1).float64()
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if math.Abs(x) == 1 && math.IsInf(y, 0) {
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return NaNValue()
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}
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return toValue_float64(math.Pow(x, y))
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}
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func builtinMath_random(call FunctionCall) Value {
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var v float64
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if call.runtime.random != nil {
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v = call.runtime.random()
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} else {
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v = rand.Float64()
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}
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return toValue_float64(v)
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}
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func builtinMath_round(call FunctionCall) Value {
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number := call.Argument(0).float64()
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value := math.Floor(number + 0.5)
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if value == 0 {
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value = math.Copysign(0, number)
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}
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return toValue_float64(value)
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}
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func builtinMath_sin(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Sin(number))
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}
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func builtinMath_sqrt(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Sqrt(number))
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}
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func builtinMath_tan(call FunctionCall) Value {
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number := call.Argument(0).float64()
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return toValue_float64(math.Tan(number))
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}
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