eps

Floating point relative accuracy

Usages

eps

• It returns the distance from 1.0 to the next larger double-precision number.

eps(A)

• It returns the distance from each element of abs(A) to the next larger double-precisoin number.
• A should be a numeric array.
• The output has the same size as A.
• eps(inf) and eps(nan) return nan.

Examples

• eps gives a constant value of 2^-52.

Input

eps == 2^-52

Output

ans =
1

• Floating point relative accuracy of a matrix consisting of positive and negative real numbers.

Input

a = rand(2,3)-0.5
eps(a)

Output

a = 1e-1 ×
-0.577  -4.369  -1.600
 0.894  -0.660  -0.880

ans = 1e-17 ×
 0.694   5.551   2.776
 1.388   1.388   1.388