b6d66d9c56
Completes issue 0095: a non-integral float→int narrowing via a FLOAT-const leaf (`F : f64 : 2.5; y : s64 = F + 0.25` = 2.75) silently truncated to 2. `evalConstFloatExpr` delegated only INTEGER leaves to `evalConstIntExpr` and had no float-const leaf arm, so the unified rule never saw the value. - program_index.zig: add `moduleConstFloat`/`moduleConstFloatFramed` — the f64 twin of `moduleConstInt` (same `isCountableConstType` gate, same cyclic- definition frame), recovering a numeric module const's value via `evalConstFloatExpr`. Add `lookupFloatName` to `ModuleConstCtx` and the `.identifier`/`.type_expr` leaf arms to `evalConstFloatExpr` that call it. Integer / integral-float leaves keep resolving through the existing `evalConstIntExpr` delegation, so the unified rule now applies to ANY compile-time-constant float expression — literal, int-const leaf, float-const leaf, and combinations — at every binding site. - lower.zig: add `Lowering.lookupFloatName` delegating to `moduleConstFloat`. Route `typedConstInitFits`' integral-fold check through `evalConstFloatExpr` + `floatToIntExact` (the SAME facility `foldComptimeFloatInit` uses) instead of the int-only `evalComptimeInt`, which folded leaf-by-leaf in i64 and so rejected an integral SUM built from a non-integral float leaf (`K : s64 : F + 1.5` = 4.0 now folds; `K : s64 : F + 0.25` errors). A LOCAL `::` const leaf is a scope ref (not in the const tables) so neither the int nor float evaluator folds it — float now matches int exactly there. Regression: examples/1146 (negative) + 0168 (positive) extended with float-const-leaf cases at local/field/param/const; unit test in program_index.test.zig covers the leaf resolution (F→2.5, F+0.25→2.75, F+1.5→4.0). specs.md + readme.md state the rule covers any compile-time-const float expression incl. float-typed const leaves. issues/0095 banner updated. Gate: zig build + zig build test green; 447 examples pass, 0 failed.
7 lines
142 B
Plaintext
7 lines
142 B
Plaintext
local=4 localExpr=4 localFlt=4
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neg=-2
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field=4 fieldExpr=4 fieldFlt=4
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param=6 paramFlt=4
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const=8 constFlt=4 len=8
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xx=4 cast=1 xxExpr=2 xxFlt=2
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