### 5.58.1 Replace small values by 0: epsilon2zero

epsilon2zero takes as argument an expression of x.

epsilon2zero returns the expression where the values of modulus
less than epsilon are replaced by zero. The expression
is not evaluated.

The epsilon value is defined in the cas
configuration (by default epsilon=1e-10).

Input :

epsilon2zero(1e-13+x)

Output (with epsilon=1e-10) :

0+x

Input :

epsilon2zero((1e-13+x)*100000)

Output (with epsilon=1e-10) :

(0+x)*100000

Input :

epsilon2zero(0.001+x)

Output (with epsilon=0.0001) :

0.001+x