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t/casts: use equivalent types for equality

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This commit is contained in:
Danny Robson 2015-11-17 14:04:23 +11:00
parent b1880e47b3
commit 78e0455800
1 changed files with 5 additions and 1 deletions
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6
types/casts.hpp
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@ -73,8 +73,12 @@ T
trunc_cast (U u) trunc_cast (U u)
{ {
auto t = static_cast<T> (u); auto t = static_cast<T> (u);
// assume testing round-trip error is the same as half-trip error. this
// makes satisfying the type system (for the debug checks) a lot easier,
// but seems like it might bite us later...
if (u == u) if (u == u)
CHECK_EQ (t, u); CHECK_EQ (static_cast<U> (t), u);
else else
CHECK_NEQ (t, t); CHECK_NEQ (t, t);