[qayxc]

The correct - but useless - answer is: any language that's IEC 60559:xxxx conformant.

Examples are: Fortran, R, C#, Java, D and many others.

You'd need to refer to a language's specification to find out, though some aren't very well defined. zig comes to mind; it supports the data types and offers strict mode, but doesn't explicitly state its IEE 754:2008 compliance.

[CodesInChaos]

Last I checked C# allowed the compiler to perform the computation with higher precision than what the code requires an then narrow down the the expected precision whenever it wants (you can trigger a narrowing by explicitly casting from a floating point type to itself). Which makes writing correct floating point code practically impossible.