Files
sx/examples/0160-types-float-numeric-limits-errors.sx
agra d8076b9333 lang: rename signed integer types sN -> iN
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
2026-06-12 09:31:53 +03:00

28 lines
1.2 KiB
Plaintext

// Cross-type rules for the numeric-limit accessors. `.min` / `.max` are valid on
// BOTH integer and float types, but `.epsilon` / `.min_positive` / `.true_min` /
// `.inf` / `.nan` are FLOAT-ONLY. Applying a float-only accessor to an INTEGER
// type, or ANY accessor to a non-numeric type, is a clean compile error — never
// a silent value, never the `.unresolved` sentinel reaching codegen.
//
// - float-only accessor on an integer (`i32.epsilon`, `u8.inf`,
// `i64.true_min`) → a dedicated "applies only to float types" diagnostic
// from the accessor intercept, located at the access;
// - any accessor on a non-numeric builtin (`bool.nan`, `string.max`) → the
// "numeric limits apply only to integer and float types" diagnostic;
// - a user struct (`MyStruct.epsilon`) → the type name is not a builtin, so the
// intercept stays out and the existing field-not-found path reports it.
// Each case is accurate and located at the access; the program exits non-zero.
#import "modules/std.sx";
MyStruct :: struct { a: i64; }
main :: () -> i32 {
a := i32.epsilon;
b := u8.inf;
c := i64.true_min;
d := bool.nan;
e := string.max;
f := MyStruct.epsilon;
return 0;
}