Exception for Jmat.Real.erfi, branch x less than or equal to 0.5

Math

\[\left|\frac{1}{\sqrt{\pi}} \cdot \left(\left(\left(2 \cdot \left|x\right| + \frac{2}{3} \cdot \left(\left(\left|x\right| \cdot \left|x\right|\right) \cdot \left|x\right|\right)\right) + \frac{1}{5} \cdot \left(\left(\left(\left(\left|x\right| \cdot \left|x\right|\right) \cdot \left|x\right|\right) \cdot \left|x\right|\right) \cdot \left|x\right|\right)\right) + \frac{1}{21} \cdot \left(\left(\left(\left(\left(\left(\left|x\right| \cdot \left|x\right|\right) \cdot \left|x\right|\right) \cdot \left|x\right|\right) \cdot \left|x\right|\right) \cdot \left|x\right|\right) \cdot \left|x\right|\right)\right)\right|\]

C

double f(double x) {
        double r8575 = 1.0;
        double r8576 = atan2(1.0, 0.0);
        double r8577 = sqrt(r8576);
        double r8578 = r8575 / r8577;
        double r8579 = 2.0;
        double r8580 = x;
        double r8581 = fabs(r8580);
        double r8582 = r8579 * r8581;
        double r8583 = 3.0;
        double r8584 = r8579 / r8583;
        double r8585 = r8581 * r8581;
        double r8586 = r8585 * r8581;
        double r8587 = r8584 * r8586;
        double r8588 = r8582 + r8587;
        double r8589 = 5.0;
        double r8590 = r8575 / r8589;
        double r8591 = r8586 * r8581;
        double r8592 = r8591 * r8581;
        double r8593 = r8590 * r8592;
        double r8594 = r8588 + r8593;
        double r8595 = 21.0;
        double r8596 = r8575 / r8595;
        double r8597 = r8592 * r8581;
        double r8598 = r8597 * r8581;
        double r8599 = r8596 * r8598;
        double r8600 = r8594 + r8599;
        double r8601 = r8578 * r8600;
        double r8602 = fabs(r8601);
        return r8602;
}

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2019173 +o rules:numerics
(FPCore (x)
  :name "Jmat.Real.erfi, branch x less than or equal to 0.5"
  (fabs (* (/ 1.0 (sqrt PI)) (+ (+ (+ (* 2.0 (fabs x)) (* (/ 2.0 3.0) (* (* (fabs x) (fabs x)) (fabs x)))) (* (/ 1.0 5.0) (* (* (* (* (fabs x) (fabs x)) (fabs x)) (fabs x)) (fabs x)))) (* (/ 1.0 21.0) (* (* (* (* (* (* (fabs x) (fabs x)) (fabs x)) (fabs x)) (fabs x)) (fabs x)) (fabs x)))))))

Backtrace

atab-pick-alt: contract violation expected: alt? given: '(#<alt (λ (x) (fabs (* (/ 1.0 (sqrt PI)) (fma (pow (fabs x) 3) (fma (/ 1.0 5.0) (* (fabs x) (fabs x)) (/ 2.0 3.0)) (* (fabs x) (fma (pow (fabs x) 6) (/ 1.0 21.0) 2.0))))))>) in: the range of the #:picking-func argument of (-> alt-table? #:only-fresh boolean? #:picking-func (-> (listof alt?) alt?) (values alt? alt-table?)) contract from: /data/pavpan/nightlies/herbie/no-costs-2/src/core/alt-table.rkt blaming: /data/pavpan/nightlies/herbie/no-costs-2/src/mainloop.rkt (assuming the contract is correct) at: /data/pavpan/nightlies/herbie/no-costs-2/src/core/alt-table.rkt:13.3		L	C
raise-blame-error16	/opt/racket-7.0/collects/racket/contract/private/blame.rkt	347	0
(unnamed)	/data/pavpan/nightlies/herbie/no-costs-2/src/core/alt-table.rkt	59	0
(unnamed)	/opt/racket-7.0/collects/racket/contract/private/arrow-val-first.rkt	388	18
choose-best-alt!	/data/pavpan/nightlies/herbie/no-costs-2/src/mainloop.rkt	110	0
run-iter!	/data/pavpan/nightlies/herbie/no-costs-2/src/mainloop.rkt	319	0
for-loop	/data/pavpan/nightlies/herbie/no-costs-2/src/mainloop.rkt	353	4
run-improve43	/data/pavpan/nightlies/herbie/no-costs-2/src/mainloop.rkt	338	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28
run	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.0/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.0/collects/racket/private/more-scheme.rkt	261	28