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Draft for adding IEEE half-precision floating-point type. #172

Merged
merged 1 commit into from
Jul 21, 2021
Merged

Draft for adding IEEE half-precision floating-point type. #172

merged 1 commit into from
Jul 21, 2021

Commits on Jul 13, 2021

  1. Add IEEE half-precision data type. 

    After discussion with clang and gcc community, we choose
C ISO/IEC TS 18661-3 `_Float16` rather than redefine
a different behavior type `__fp16` in RISC-V.

1. ARM folks are working on deprecating `__fp16`. [1]
2. In Clang, `_Float16` is available in both C and C++ mode. [2]
3. In GCC, `_Float16` is only avaiable in C mode but GCC folks
think making it available in C++ as GCC extension is doable. [3]

[1] https://lists.llvm.org/pipermail/cfe-dev/2021-March/067850.html
[2] https://gcc.gnu.org/pipermail/gcc/2021-March/234981.html
[3] https://gcc.gnu.org/pipermail/gcc/2021-March/234972.html
    @zakk0610
    zakk0610 committed Jul 13, 2021
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