diff options
Diffstat (limited to 'vendor/github.com/robertkrimen/otto/builtin_math.go')
-rw-r--r-- | vendor/github.com/robertkrimen/otto/builtin_math.go | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/vendor/github.com/robertkrimen/otto/builtin_math.go b/vendor/github.com/robertkrimen/otto/builtin_math.go new file mode 100644 index 000000000..7ce90c339 --- /dev/null +++ b/vendor/github.com/robertkrimen/otto/builtin_math.go @@ -0,0 +1,151 @@ +package otto + +import ( + "math" + "math/rand" +) + +// Math + +func builtinMath_abs(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Abs(number)) +} + +func builtinMath_acos(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Acos(number)) +} + +func builtinMath_asin(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Asin(number)) +} + +func builtinMath_atan(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Atan(number)) +} + +func builtinMath_atan2(call FunctionCall) Value { + y := call.Argument(0).float64() + if math.IsNaN(y) { + return NaNValue() + } + x := call.Argument(1).float64() + if math.IsNaN(x) { + return NaNValue() + } + return toValue_float64(math.Atan2(y, x)) +} + +func builtinMath_cos(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Cos(number)) +} + +func builtinMath_ceil(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Ceil(number)) +} + +func builtinMath_exp(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Exp(number)) +} + +func builtinMath_floor(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Floor(number)) +} + +func builtinMath_log(call FunctionCall) Value { + number := call.Argument(0).float64() + 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(call.ArgumentList[0].float64()) + } + result := call.ArgumentList[0].float64() + if math.IsNaN(result) { + return NaNValue() + } + for _, value := range call.ArgumentList[1:] { + value := value.float64() + 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(call.ArgumentList[0].float64()) + } + result := call.ArgumentList[0].float64() + if math.IsNaN(result) { + return NaNValue() + } + for _, value := range call.ArgumentList[1:] { + value := value.float64() + 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 := call.Argument(0).float64() + y := call.Argument(1).float64() + if math.Abs(x) == 1 && math.IsInf(y, 0) { + return NaNValue() + } + return toValue_float64(math.Pow(x, y)) +} + +func builtinMath_random(call FunctionCall) Value { + var v float64 + if call.runtime.random != nil { + v = call.runtime.random() + } else { + v = rand.Float64() + } + return toValue_float64(v) +} + +func builtinMath_round(call FunctionCall) Value { + number := call.Argument(0).float64() + 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 := call.Argument(0).float64() + return toValue_float64(math.Sin(number)) +} + +func builtinMath_sqrt(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Sqrt(number)) +} + +func builtinMath_tan(call FunctionCall) Value { + number := call.Argument(0).float64() + return toValue_float64(math.Tan(number)) +} |