Average Error: 0.3 → 0
Time: 983.0ms
Precision: 64
Internal Precision: 128
\[d \cdot 10 + d \cdot 20\]
↓
\[d \cdot 30\]

Error

Bits error versus d

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Target

Original0.3
Target0
Herbie0
\[d \cdot 30\]

Derivation

  1. Initial program 0.3

    \[d \cdot 10 + d \cdot 20\]

  2. Simplified0

    \[\leadsto \color{blue}{d \cdot 30}\]

  3. Final simplification0

    \[\leadsto d \cdot 30\]

Reproduce

herbie shell --seed 2019016 +o rules:numerics
(FPCore (d)
  :name "FastMath test1"

  :herbie-target
  (* d 30)

  (+ (* d 10) (* d 20)))

Details

Time bar (total: 753.0ms)Debug log

sample19.0ms

Algorithm
intervals
Results
256×(pre true 80)
256×(body real 80)

simplify10.0ms

Counts
1 → 1
Calls
1 calls:
Slowest
10.0ms
(+ (* d 10) (* d 20))

prune10.0ms

Pruning

1 alts after pruning (1 fresh and 0 done)

Merged error: 0b

localize3.0ms

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

prune2.0ms

Pruning

1 alts after pruning (0 fresh and 1 done)

Merged error: 0b

end0.0ms

sample708.0ms

Algorithm
intervals
Results
8020×(pre true 80)
8020×(body real 80)