e03c087e5a
Item 2 (Agra ruling): a compile-time INTEGRAL float (`4.0`, `N : f64 : 4.0`, `N :: 4.0`) used as an array dimension / Vector lane / generic value-param count / `inline for` bound now folds to its integer at the shared leaf — `program_index.floatToIntExact`, used by both the `.float_literal` arm of `evalConstIntExpr` and `moduleConstInt`. All four consumers route through the one evaluator, so `[4.0]s64` lays out the same `[4]s64` uniformly; a non-integral (`4.5`) or negative value stays rejected by the downstream `foldDimU32` gate. Pass-0 now pre-registers float-valued module consts for forward-alias parity with int consts. Item 1: a generic value-param bind (`Box($K: u32)`) never range-checked the folded arg, so `Box(5_000_000_000)` compiled and ran. The bind now range-checks against the param's declared type — a `u32` count through the shared `foldDimU32` gate (making program_index's "single u32 gate for value-param counts" doc true), any other integer type through the new `program_index.intTypeRange` — and emits a clean "value N does not fit in u32 parameter K" otherwise. The declared type is threaded via a new `TemplateParam.value_type`. Regressions: examples 0145 (integral-float array dim), 1504 (Vector lane), 0611 (inline-for bound), 0209 (value-param integral-float), 1132 (non-integral float dim rejected), 1133 (negative float dim rejected), 1134 (oversized u32 value-param rejected) + program_index float-fold unit tests. Gate: zig build, zig build test, 406/0 run_examples.
15 lines
481 B
Plaintext
15 lines
481 B
Plaintext
// An `inline for 0..M` bound accepts an integral float constant — `M :: 3.0`
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// unrolls the same three iterations as `M :: 3`. The inline-for bound folder
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// (`evalComptimeInt`) delegates to the shared const-int evaluator, so the
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// integral-float rule (issue 0083 / F0.4 attempt 8, Agra ruling) applies here
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// too.
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#import "modules/std.sx";
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M :: 3.0;
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main :: () {
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s := 0;
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inline for 0..M: (i) { s += i; }
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print("sum 0..M = {}\n", s); // 0 + 1 + 2 = 3
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}
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