(FPCore (x) :precision binary64 (* (/ 1.0 2.0) (log (/ (+ 1.0 x) (- 1.0 x)))))
double code(double x) {
return (1.0 / 2.0) * log(((1.0 + x) / (1.0 - x)));
}
real(8) function code(x)
real(8), intent (in) :: x
code = (1.0d0 / 2.0d0) * log(((1.0d0 + x) / (1.0d0 - x)))
end function
public static double code(double x) {
return (1.0 / 2.0) * Math.log(((1.0 + x) / (1.0 - x)));
}
def code(x): return (1.0 / 2.0) * math.log(((1.0 + x) / (1.0 - x)))
function code(x) return Float64(Float64(1.0 / 2.0) * log(Float64(Float64(1.0 + x) / Float64(1.0 - x)))) end
function tmp = code(x) tmp = (1.0 / 2.0) * log(((1.0 + x) / (1.0 - x))); end
code[x_] := N[(N[(1.0 / 2.0), $MachinePrecision] * N[Log[N[(N[(1.0 + x), $MachinePrecision] / N[(1.0 - x), $MachinePrecision]), $MachinePrecision]], $MachinePrecision]), $MachinePrecision]
\frac{1}{2} \cdot \log \left(\frac{1 + x}{1 - x}\right)
Please include this information when filing a bug report:
herbie shell --seed 2022206
(FPCore (x)
:name "Hyperbolic arc-(co)tangent"
:precision binary64
(* (/ 1.0 2.0) (log (/ (+ 1.0 x) (- 1.0 x)))))
| argmin: contract violation expected: (and/c list? (not/c empty?)) given: '() argument position: 2nd other arguments...: #<procedure:score-alt> | L | C | |
|---|---|---|---|
| choose-alts | /data/pavpan/nightlies/herbie/fix-major-atab-bug/src/mainloop.rkt | 95 | 0 |
| run-iter! | /data/pavpan/nightlies/herbie/fix-major-atab-bug/src/mainloop.rkt | 242 | 0 |
| mutate! | /data/pavpan/nightlies/herbie/fix-major-atab-bug/src/mainloop.rkt | 348 | 0 |
| run-improve! | /data/pavpan/nightlies/herbie/fix-major-atab-bug/src/mainloop.rkt | 296 | 0 |
| (unnamed) | /data/pavpan/nightlies/herbie/fix-major-atab-bug/src/sandbox.rkt | 55 | 6 |
| (unnamed) | /usr/share/racket/pkgs/profile-lib/main.rkt | 40 | 10 |
| profile-thunk | /usr/share/racket/pkgs/profile-lib/main.rkt | 9 | 0 |
| (unnamed) | /usr/share/racket/collects/racket/engine.rkt | 42 | 24 |