Exception for Given's Rotation SVD example

\[10^{-150} < \left|x\right| \land \left|x\right| < 10^{+150}\]

Math

\[\]

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2020231 
(FPCore (p x)
  :name "Given's Rotation SVD example"
  :precision binary64
  :pre (< 1e-150 (fabs x) 1e+150)

  :herbie-target
  (sqrt (+ 0.5 (/ (copysign 0.5 x) (hypot 1.0 (/ (* 2.0 p) x)))))

  (sqrt (* 0.5 (+ 1.0 (/ x (sqrt (+ (* (* 4.0 p) p) (* x x))))))))

Backtrace

hash-ref: no value found for key key: 'NAN.f64		L	C
table-ref	/data/pavpan/nightlies/herbie/cleanup/src/common.rkt	32	0
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	159	15
f284	unknown
munge	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	138	2
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	170	4
batch-eval-progs	/data/pavpan/nightlies/herbie/cleanup/src/programs.rkt	112	0
batch-errors	/data/pavpan/nightlies/herbie/cleanup/src/points.rkt	169	0
atab-add-altns	/data/pavpan/nightlies/herbie/cleanup/src/core/alt-table.rkt	194	0
(unnamed)	/opt/racket-7.5/collects/racket/contract/private/arrow-val-first.rkt	486	18
finalize-iter!	/data/pavpan/nightlies/herbie/cleanup/src/mainloop.rkt	278	0
run-iter!	/data/pavpan/nightlies/herbie/cleanup/src/mainloop.rkt	346	0
for-loop	/data/pavpan/nightlies/herbie/cleanup/src/mainloop.rkt	384	4
run-improve41	/data/pavpan/nightlies/herbie/cleanup/src/mainloop.rkt	365	0
.../more-scheme.rkt:261:28	unknown
run	/opt/racket-7.5/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk16	/opt/racket-7.5/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.5/collects/racket/private/more-scheme.rkt	261	28

Reproduce

herbie shell --seed 2020231 
(FPCore (p x)
  :name "Given's Rotation SVD example"
  :precision binary64
  :pre (< 1e-150 (fabs x) 1e+150)

  :herbie-target
  (sqrt (+ 0.5 (/ (copysign 0.5 x) (hypot 1.0 (/ (* 2.0 p) x)))))

  (sqrt (* 0.5 (+ 1.0 (/ x (sqrt (+ (* (* 4.0 p) p) (* x x))))))))