[libc-commits] [libc] [libc][math][c23] Add exp10f16 C23 math function (PR #101588)

[via libc-commits]

overmighty wrote:

On i7-13700H:

- With Clang 18, without `-march=native`:  
  ```
   Performance tests with inputs in denormal range:
  -- My function --
       Total time      : 1627880300 ns 
       Average runtime : 79.564 ns/op 
       Ops per second  : 12568491 op/s 
  -- Other function --
       Total time      : 21792295 ns 
       Average runtime : 1.06512 ns/op 
       Ops per second  : 938863942 op/s 
  -- Average runtime ratio --
       Mine / Other's  : 74.6998 
  
   Performance tests with inputs in normal range:
  -- My function --
       Total time      : 25289960974 ns 
       Average runtime : 41.1634 ns/op 
       Ops per second  : 24293434 op/s 
  -- Other function --
       Total time      : 648779538 ns 
       Average runtime : 1.05599 ns/op 
       Ops per second  : 946978078 op/s 
  -- Average runtime ratio --
       Mine / Other's  : 38.9808 
  ```

- With Clang 18, with `-march=native`:  
  ```
   Performance tests with inputs in denormal range:
  -- My function --
       Total time      : 348120098 ns 
       Average runtime : 17.0147 ns/op 
       Ops per second  : 58772820 op/s 
  -- Other function --
       Total time      : 21815025 ns 
       Average runtime : 1.06623 ns/op 
       Ops per second  : 937885700 op/s 
  -- Average runtime ratio --
       Mine / Other's  : 15.9578 
  
   Performance tests with inputs in normal range:
  -- My function --
       Total time      : 24294542949 ns 
       Average runtime : 39.5432 ns/op 
       Ops per second  : 25288806 op/s 
  -- Other function --
       Total time      : 648768173 ns 
       Average runtime : 1.05597 ns/op 
       Ops per second  : 946994667 op/s 
  -- Average runtime ratio --
       Mine / Other's  : 37.4472 
  ```


https://github.com/llvm/llvm-project/pull/101588