DoubleFloatElementaryFunctions

special2.spad line 1134 [edit on github]

This package implements functions which we can not directly take from underlying system.

atanh: Complex DoubleFloat -> Complex DoubleFloat

atanh(x) computes atanh.

log_plus_1: DoubleFloat -> DoubleFloat

log_plus_1(x) computes log(1 + x) with good accuracy.