Crate ironwork_numeric 

What IBM Enterprise COBOL does with numeric data, on top of what the machine does (zarch). Where the manuals leave the answer to the generated code, the choice made here is an entry in assumptions::ASSUMPTIONS until an oracle run settles it.

Re-exports

pub use options::Arith;

pub use options::Numproc;

pub use options::Options;

pub use options::Trunc;

pub use options::TruncCheck;

Modules

assumptions

binary

float

Moves between fixed-point decimal and COMP-1/COMP-2, and floating-point intermediates. Each conversion here is an assumption: see crate::assumptions::FLOAT_FROM_DECIMAL, crate::assumptions::FLOAT_TO_DECIMAL and crate::assumptions::FLOAT_NARROWING_TRUNCATES.

options

precision

Fixed-point intermediate results: how many integer and decimal places IBM carries for each operation, and exact arithmetic that drops exactly the digits it drops. See crate::assumptions::INTERMEDIATE_TABLE.

sign

Signs of packed and zoned items under NUMPROC. Arithmetic results take the preferred sign under either setting; the settings differ in whether a sign is repaired on the way through a MOVE and whether a comparison is algebraic. See crate::assumptions::PFD_MOVES_BYTES and crate::assumptions::PFD_COMPARES_LOGICALLY.