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ferret/pkg/stdlib/math/atan2.go
2018-10-14 13:06:27 -04:00

39 lines
963 B
Go

package math
import (
"context"
"math"
"github.com/MontFerret/ferret/pkg/runtime/core"
"github.com/MontFerret/ferret/pkg/runtime/values"
)
// Atan2 returns the arc tangent of y/x, using the signs of the two to determine the quadrant of the return value.
// @param number1 (Int|Float) - Input number.
// @param number2 (Int|Float) - Input number.
// @returns (Float) - The arc tangent of y/x, using the signs of the two to determine the quadrant of the return value.
func Atan2(_ context.Context, args ...core.Value) (core.Value, error) {
err := core.ValidateArgs(args, 2, 2)
if err != nil {
return values.None, err
}
err = core.ValidateType(args[0], core.IntType, core.FloatType)
if err != nil {
return values.None, err
}
err = core.ValidateType(args[1], core.IntType, core.FloatType)
if err != nil {
return values.None, err
}
arg1 := toFloat(args[0])
arg2 := toFloat(args[1])
return values.NewFloat(math.Atan2(arg1, arg2)), nil
}