diff options
Diffstat (limited to 'library/std/src/num/f128.rs')
| -rw-r--r-- | library/std/src/num/f128.rs | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/library/std/src/num/f128.rs b/library/std/src/num/f128.rs index 5d206c4b7da..40061d08928 100644 --- a/library/std/src/num/f128.rs +++ b/library/std/src/num/f128.rs @@ -557,10 +557,12 @@ impl f128 { /// Computes the four quadrant arctangent of `self` (`y`) and `other` (`x`) in radians. /// - /// * `x = 0`, `y = 0`: `0` - /// * `x >= 0`: `arctan(y/x)` -> `[-pi/2, pi/2]` - /// * `y >= 0`: `arctan(y/x) + pi` -> `(pi/2, pi]` - /// * `y < 0`: `arctan(y/x) - pi` -> `(-pi, -pi/2)` + /// | `x` | `y` | Piecewise Definition | Range | + /// |---------|---------|----------------------|---------------| + /// | `>= +0` | `>= +0` | `arctan(y/x)` | `[+0, +pi/2]` | + /// | `>= +0` | `<= -0` | `arctan(y/x)` | `[-pi/2, -0]` | + /// | `<= -0` | `>= +0` | `arctan(y/x) + pi` | `[+pi/2, +pi]`| + /// | `<= -0` | `<= -0` | `arctan(y/x) - pi` | `[-pi, -pi/2]`| /// /// # Unspecified precision /// |