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#[doc = "The identity function"]
pure fn id<T: copy>(x: T) -> T { x }
/* FIXME (issue #141): See test/run-pass/constrained-type.rs. Uncomment
* the constraint once fixed. */
#[doc = "A rational number"]
type rational = {num: int, den: int}; // : int::positive(*.den);
pure fn rational_leq(x: rational, y: rational) -> bool {
// NB: Uses the fact that rationals have positive denominators WLOG:
x.num * y.den <= y.num * x.den
}
// Local Variables:
// mode: rust;
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// End:
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