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master red: tail.rs expects @trunc as the first f64 refusal (Closes #10413) #10415

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Oct 18, 2026
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master red: tail.rs expects @trunc as the first f64 refusal (Closes #10413) #10415

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4 changes: 2 additions & 2 deletions cli/t27b/tests/tail.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -344,12 +344,12 @@ fn a_comptime_int_rounds_in_float_from_int() {

/// #7819: of an f32 they call libm.t27's ports of compiler_rt (`roundf` half away from zero, `fmodf` signed as the
/// dividend), and `@rem`'s second operand takes the first one's type (specs/tri/t27b/libm_plan.t27). An f64 is refused
/// but by `@round` (#7923), so the first refusal there is `@floor`'s.
/// but by `@round` (#7923), `@floor` and `@ceil` (#10405), so the first refusal there is `@trunc`'s.
#[test]
fn f32_rounding_and_rem_call_their_ports() {
let src = "module a;\n\nfn f(x: f32) -> f32 {\n return @round(x) + @floor(x) + @ceil(x) + @trunc(x) + @rem(x, 2.0);\n}\n\ntest t {\n assert(f(-2.5) == -10.5);\n}\n";
assert_eq!(names_ok(&run(src)), vec![("t", false, true)]);
for (from, to, what, why) in [("x: f32) -> f32", "x: f64) -> f64", "@floor", "no f64 routine"), ("@rem(x, 2.0)", "@rem(x)", "@rem", "`@rem` two")] {
for (from, to, what, why) in [("x: f32) -> f32", "x: f64) -> f64", "@trunc", "no f64 routine"), ("@rem(x, 2.0)", "@rem(x)", "@rem", "`@rem` two")] {
let m = rejected(&src.replace(from, to));
assert!(m.contains(&format!("construct ExprCall({}) at line 4", what)) && m.contains(why), "{}", m);
}
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