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3.3 Special values
real
not_a_number
()
Not-a-number, a special non-finite real value returned to signal an
error
real
positive_infinity
()
Positive infinity, a special non-finite real value larger than all
finite numbers
real
negative_infinity
()
Negative infinity, a special non-finite real value smaller than all
finite numbers
real
machine_precision
()
The smallest number \(x\) such that \((x + 1) \neq 1\) in floating-point
arithmetic on the current hardware platform