Average Error: 0 → 0
Time: 517.0ms
Precision: binary64
Cost: 320
\[\left(x + x\right) - 1\]
↓
\[\left(x + x\right) - 1\]
\left(x + x\right) - 1
↓
\left(x + x\right) - 1
(FPCore (x) :precision binary64 (- (+ x x) 1.0))
↓
(FPCore (x) :precision binary64 (- (+ x x) 1.0))
double code(double x) {
	return (x + x) - 1.0;
}
↓
double code(double x) {
	return (x + x) - 1.0;
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Alternatives

Alternative 1
Error32.0
Cost64
\[-1\]
Alternative 2
Error62.3
Cost64
\[0\]
Alternative 3
Error62.5
Cost64
\[1\]

Error

Derivation

  1. Initial program 0

    \[\left(x + x\right) - 1\]

  2. Simplified0

    \[\leadsto \color{blue}{\left(x + x\right) - 1}\]

  3. Final simplification0

    \[\leadsto \left(x + x\right) - 1\]

Reproduce

herbie shell --seed 2021044 
(FPCore (x)
  :name "Data.Random.Distribution.Normal:doubleStdNormalZ from random-fu-0.2.6.2"
  :precision binary64
  (- (+ x x) 1.0))