Boundary functions return incorrect results

[johngrimes]

It seems as though the spec has been updated with respect to the semantics of the boundary functions, but the implementations within this library have not been changed to reflect this.

Here is the specification for lowBoundary: https://build.fhir.org/ig/HL7/FHIRPath/#lowboundaryprecision-integer-decimal--date--datetime--time

The first example is:

1.587.lowBoundary(8) // 1.58700000

The result returned by the library:

Utilities.lowBoundaryForDecimal("1.587", 8)  // 1.58650000

[johngrimes]

I note that the FHIRPath page in the CI build of the FHIR spec seems to be different, I am a bit confused by this: https://build.fhir.org/fhirpath.html#fn-lowBoundary

[grahamegrieve]

I don't think that they're wrong, but see discussion here: https://chat.fhir.org/#narrow/stream/179266-fhirpath/topic/Boundary.20functions