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Support for float <-> float conversions. (#7279)

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Implement support for floating-point <-> floating-point type conversions
as described in https://github.com/carbon-language/carbon-lang/pull/820
and https://github.com/carbon-language/carbon-lang/pull/845.
Value-preserving conversions are implicit; narrowing conversions require
explicit `as`.

Assisted-by: Gemini via Antigravity
This commit is contained in:
Richard Smith
2026-06-04 00:33:33 +00:00
committed by GitHub
parent 7fe3e35aec
commit 88c191146d
15 changed files with 976 additions and 11 deletions
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toolchain/check/cpp/impl_lookup.cpp
+2 -1
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@@ -606,8 +606,9 @@ auto LookupCppImpl(Context& context, SemIR::LocId loc_id,
return BuildCppRangeForIterateWitness(
context, loc_id, query_self_const_id, query_specific_interface_id);
// IntFitsIn is for Carbon integer types only.
// *FitsIn are implemented only by Carbon primitive types.
case SemIR::CoreInterface::IntFitsIn:
case SemIR::CoreInterface::FloatFitsIn:
return SemIR::InstId::None;
case SemIR::CoreInterface::Unknown: