epsilon in Fortran Wiki

## Description
`epsilon(x)` returns a nearly negligible number relative to `1`.
## Standard
[[Fortran 95]] and later
## Class
[[Inquiry function]]
## Syntax
`result = epsilon(x)`
## Arguments
 - `x` - The type shall be `real`.
## Return value
The return value is of same type as the argument.
## Example
 program test_epsilon
 real :: x = 3.143
 real(8) :: y = 2.33
 print *, epsilon(x)
 print *, epsilon(y)
 end program test_epsilon
{: lang=fortran }
category: intrinsics