R jpdecimal - Syntax and typed expression
R jpdecimal / Purple
MJ Physics Engineering | Bangel Language | MJos Operating System
Owned and operated by Michael Bangel | Clearwater, Florida
TYPED BANGEL BINDING
- DecimalValue — exact representation and scale
- NumericOperation — supported operation and rounding rule
- MemoryContract — owner and lifetime
- NumericEvidence — expected result and test profile
PRECONDITION
A supported decimal operation is requested through the native or R interface.
SEMANTIC OBLIGATION
Preserve representation, rounding and ownership rules and compare behavior with the matching numeric contract.
POSTCONDITION
Return the precise supported result or named failure without expanding the arithmetic guarantees.
COMPILATION RULE
Elsa is the compiler. Use a declared Bangel grammar profile, independently admit the applicable JP representation and execute through Joanna only where that path is implemented. These fields are documentary contract notation, not parser-verified source. A shared .bangel extension does not prove grammar equivalence.
PROFILE RELATIONSHIP
Related identities: JP C++ Decimal Library; Bangel Interoperability. Preserve each named contract and source status.
IMPLEMENTATION CHECK
Round-trip a long decimal through the native and R boundaries; preserve exact representation and report unsupported range without silent rounding.
DISCOVERY NAMES
R jpdecimal
These names aid search; current compiler naming remains Elsa.
SOURCE STATUS AND LIMITS
Recovered historical design and project records informed this documentary profile. Original conversations remain private; current implementation and reported historical tests were not rerun.
Recovered status: historical_report_not_fresh_verification.
Historical released integration; precise numeric semantics depend on the native-library contract. Historical evidence has not been rerun in this discovery pass.
SOURCE REFERENCES
PUBLIC SOURCE NOTE
Recovered historical design and project records informed this documentary profile. Original conversations remain private; current implementation and reported historical tests were not rerun. This edition publishes the reconciled project description, without redistributing private messages or unverified release URLs.