Trig functions Atan returns the arctangent, in radians, of x.
()
| 2121 | |
| 2122 | // Atan returns the arctangent, in radians, of x. |
| 2123 | func (d Decimal) Atan() Decimal { |
| 2124 | if d.Equal(NewFromFloat(0.0)) { |
| 2125 | return d |
| 2126 | } |
| 2127 | if d.GreaterThan(NewFromFloat(0.0)) { |
| 2128 | return d.satan() |
| 2129 | } |
| 2130 | return d.Neg().satan().Neg() |
| 2131 | } |
| 2132 | |
| 2133 | func (d Decimal) xatan() Decimal { |
| 2134 | P0 := NewFromFloat(-8.750608600031904122785e-01) |