Average Error: 0.0 → 0.0
Time: 1.4s
Precision: binary64
Cost: 320
\[x \cdot y - x\]
↓
\[x \cdot y - x\]
x \cdot y - x
↓
x \cdot y - x
(FPCore (x y) :precision binary64 (- (* x y) x))
↓
(FPCore (x y) :precision binary64 (- (* x y) x))
double code(double x, double y) {
	return (x * y) - x;
}
↓
double code(double x, double y) {
	return (x * y) - x;
}

Error

Bits error versus x

Bits error versus y

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Alternatives

Alternative 1
Error1.6
Cost520
\[\begin{array}{l} \mathbf{if}\;y \leq -0.9967835047363487 \lor \neg \left(y \leq 1.0172632131787536\right):\\ \;\;\;\;x \cdot y\\ \mathbf{else}:\\ \;\;\;\;-x\\ \end{array}\]
Alternative 2
Error27.4
Cost128
\[-x\]
Alternative 3
Error61.8
Cost64
\[0\]
Alternative 4
Error61.7
Cost64
\[1\]

Error

Derivation

  1. Initial program 0.0

    \[x \cdot y - x\]

  2. Simplified0.0

    \[\leadsto \color{blue}{x \cdot y - x}\]

  3. Final simplification0.0

    \[\leadsto x \cdot y - x\]

Reproduce

herbie shell --seed 2021044 
(FPCore (x y)
  :name "Data.Histogram.Bin.LogBinD:$cbinSizeN from histogram-fill-0.8.4.1"
  :precision binary64
  (- (* x y) x))