Exception for math.sin on complex, imaginary part

Math

\[\]

Reproduce

Please include this information when filing a bug report:

herbie shell --seed 2020355 
(FPCore (re im)
  :name "math.sin on complex, imaginary part"
  :precision binary64

  :herbie-target
  (if (< (fabs im) 1.0) (- (* (cos re) (+ (+ im (* (* (* 0.16666666666666666 im) im) im)) (* (* (* (* (* 0.008333333333333333 im) im) im) im) im)))) (* (* 0.5 (cos re)) (- (exp (- 0.0 im)) (exp im))))

  (* (* 0.5 (cos re)) (- (exp (- 0.0 im)) (exp im))))

Backtrace

/: division by zero		L	C
all-partitions	/data/pavpan/nightlies/herbie/taylor-one-var/src/core/taylor.rkt	337	0
(unnamed)	/data/pavpan/nightlies/herbie/taylor-one-var/src/core/taylor.rkt	355	23
hash-ref!	/opt/racket-7.9/collects/racket/private/more-scheme.rkt	377	2
(unnamed)	/data/pavpan/nightlies/herbie/taylor-one-var/src/core/taylor.rkt	220	26
hash-ref!	/opt/racket-7.9/collects/racket/private/more-scheme.rkt	377	2
(unnamed)	/data/pavpan/nightlies/herbie/taylor-one-var/src/core/taylor.rkt	230	23
hash-ref!	/opt/racket-7.9/collects/racket/private/more-scheme.rkt	377	2
(unnamed)	/data/pavpan/nightlies/herbie/taylor-one-var/src/core/taylor.rkt	230	23
hash-ref!	/opt/racket-7.9/collects/racket/private/more-scheme.rkt	377	2
next	/data/pavpan/nightlies/herbie/taylor-one-var/src/core/taylor.rkt	20	2
(unnamed)	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	153	4
loop	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	174	10
for-loop	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	169	8
for-loop	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	169	8
taylor-alt	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	161	0
for-loop	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	194	7
gen-series!	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	185	0
run-iter!	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	380	0
run-improve	/data/pavpan/nightlies/herbie/taylor-one-var/src/mainloop.rkt	397	0
(unnamed)	/data/pavpan/nightlies/herbie/taylor-one-var/src/sandbox.rkt	54	6
run	/opt/racket-7.9/share/pkgs/profile-lib/main.rkt	39	2
profile-thunk	/opt/racket-7.9/share/pkgs/profile-lib/main.rkt	9	0
(unnamed)	/opt/racket-7.9/collects/racket/engine.rkt	42	24

Reproduce

herbie shell --seed 2020355 
(FPCore (re im)
  :name "math.sin on complex, imaginary part"
  :precision binary64

  :herbie-target
  (if (< (fabs im) 1.0) (- (* (cos re) (+ (+ im (* (* (* 0.16666666666666666 im) im) im)) (* (* (* (* (* 0.008333333333333333 im) im) im) im) im)))) (* (* 0.5 (cos re)) (- (exp (- 0.0 im)) (exp im))))

  (* (* 0.5 (cos re)) (- (exp (- 0.0 im)) (exp im))))