Average Error: 0.0 → 0.0
Time: 3.8s
Precision: 64
Internal Precision: 128
\[e^{re} \cdot \cos im\]
↓
\[\cos im \cdot e^{re}\]

Error

Bits error versus re

Bits error versus im

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0.0

    \[e^{re} \cdot \cos im\]

  2. Final simplification0.0

    \[\leadsto \cos im \cdot e^{re}\]

Reproduce

herbie shell --seed 2019016 
(FPCore (re im)
  :name "math.exp on complex, real part"
  (* (exp re) (cos im)))

Details

Time bar (total: 3.5s)Debug log

sample144.0ms

Algorithm
intervals
Results
328×(pre true 80)
218×(body real 80)
53×(body real 1280)
31×(body real 640)
13×(body real 320)
13×(body real 160)

simplify2.0ms

Counts
1 → 1
Calls
1 calls:
Slowest
2.0ms
(* (exp re) (cos im))

prune6.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0b

localize10.0ms

Local error

Found 0 expressions with local error:

rewrite0.0ms

Algorithm
rewrite-expression-head
Rules
Counts
0 → 0
Calls
0 calls:
Slowest

series0.0ms

Counts
0 → 0
Calls
0 calls:
Slowest

simplify0.0ms

Counts
0 → 0
Calls
0 calls:
Slowest

prune3.0ms

Pruning

1 alts after pruning (0 fresh and 1 done)

Merged error: 0b

end0.0ms

sample3.4s

Algorithm
intervals
Results
10646×(pre true 80)
6936×(body real 80)
1535×(body real 1280)
1207×(body real 640)
656×(body real 320)
312×(body real 160)