llvm-project.git/libc/src/math/generic/fmul.cpp, branch users/nico/python-2

[libc] Provide more fine-grained control of FMA instruction for ARM targets. (#130700)

2025-03-11T14:17:34+00:00

[libc][math] Improve fmul performance by using double-double arithmetic. (#107517)

2024-09-14T21:32:22+00:00

```
 Performance tests with inputs in denormal range:
-- My function --
     Total time      : 2731072304 ns 
     Average runtime : 68.2767 ns/op 
     Ops per second  : 14646276 op/s 
-- Other function --
     Total time      : 3259744268 ns 
     Average runtime : 81.4935 ns/op 
     Ops per second  : 12270913 op/s 
-- Average runtime ratio --
     Mine / Other's  : 0.837818 

 Performance tests with inputs in normal range:
-- My function --
     Total time      : 93467258 ns 
     Average runtime : 2.33668 ns/op 
     Ops per second  : 427957777 op/s 
-- Other function --
     Total time      : 637295452 ns 
     Average runtime : 15.9324 ns/op 
     Ops per second  : 62765299 op/s 
-- Average runtime ratio --
     Mine / Other's  : 0.146662 

 Performance tests with inputs in normal range with exponents close to each other:
-- My function --
     Total time      : 95764894 ns 
     Average runtime : 2.39412 ns/op 
     Ops per second  : 417690014 op/s 
-- Other function --
     Total time      : 639866770 ns 
     Average runtime : 15.9967 ns/op 
     Ops per second  : 62513075 op/s 
-- Average runtime ratio --
     Mine / Other's  : 0.149664 
```

---------

Co-authored-by: Tue Ly

[libc][math][c23] Add {f,d}mul{l,f128} and f16mul{,f,l,f128} C23 math functions (#98972)

2024-07-18T17:50:49+00:00

Part of #93566.
                
Fixes #94833.

[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)

2024-07-12T16:28:41+00:00

This is a part of #97655.

Revert "[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration" (#98593)

2024-07-12T07:12:13+00:00

Reverts llvm/llvm-project#98075

bots are broken

[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98075)

2024-07-11T19:35:22+00:00

This is a part of #97655.

[libc][math][c23] fmul correcly rounded to all rounding modes (#91537)

2024-06-08T19:07:27+00:00

This is an implementation of floating point multiplication:

It will consist of 
   - `double x double -> float`