Construct an ExactFloat from a string (such as "1.2e50"). Requires that the value is exactly representable as a floating-point number (so for example, "0.125" is allowed but "0.1" is not).
See Implementation
Construct an ExactFloat from a string (such as "1.2e50"). Requires that the value is exactly representable as a floating-point number (so for example, "0.125" is allowed but "0.1" is not).