Bullet-proof string to fixed-point conversion, is it needed?

[clangenb]

In the conversion from string to fixed-point values, we parse the string to a float. In theory, this can be inconsistent.

The runtime validates the locations in the attestations exactly. So if a discrepancy occurs, the attestation is invalid. So far, this has not been observed.

The question is whether we care about an exact transform, or if we just allow for slight discrepancies when validating the fixed point number in the location.