Exponential of squared argument
Computes y = exp(x*x) while suppressing error amplification that would ordinarily arise from the inexactness of the exponential argument x*x.
If sign < 0, the result is inverted; i.e., y = exp(-x*x) .
ACCURACY: Relative error: arithmetic domain # trials peak rms IEEE -106.566, 106.566 10^5 1.6e-19 4.4e-20
See Implementation
Exponential of squared argument
Computes y = exp(x*x) while suppressing error amplification that would ordinarily arise from the inexactness of the exponential argument x*x.
If sign < 0, the result is inverted; i.e., y = exp(-x*x) .
ACCURACY: Relative error: arithmetic domain # trials peak rms IEEE -106.566, 106.566 10^5 1.6e-19 4.4e-20