Average Error: 0 → 0
Time: 1.4s
Precision: binary64
\[\tanh \left(10^{4} + x\right) - 1\]
↓
\[\tanh \left(10^{4} + x\right) - 1\]
\tanh \left(10^{4} + x\right) - 1
↓
\tanh \left(10^{4} + x\right) - 1
double code(double x) {
	return ((double) (((double) tanh(((double) (10000.0 + x)))) - 1.0));
}
↓
double code(double x) {
	return ((double) (((double) tanh(((double) (10000.0 + x)))) - 1.0));
}

Error

Bits error versus x

Try it out

Your Program's Arguments

Results

Enter valid numbers for all inputs

Derivation

  1. Initial program 0

    \[\tanh \left(10^{4} + x\right) - 1\]

  2. Final simplification0

    \[\leadsto \tanh \left(10^{4} + x\right) - 1\]

Reproduce

herbie shell --seed 2020153 
(FPCore (x)
  :name "(- (tanh (+ 10000 x)) 1)"
  :precision binary64
  (- (tanh (+ 10000.0 x)) 1.0))