[libc-commits] [libc] [llvm] [libc][math] Refactor round-roundeven-trunc family to header-only (PR #195590)

[Muhammad Bassiouni via libc-commits]

================
@@ -5219,6 +5351,73 @@ add_header_library(
     libc.src.__support.macros.config
 )
 
+add_header_library(
+  trunc
+  HDRS
+    trunc.h
+  DEPENDS
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+  FLAGS
+    ROUND_OPT
+)
+
+add_header_library(
+  truncbf16
+  HDRS
+    truncbf16.h
+  DEPENDS
+    libc.src.__support.FPUtil.bfloat16
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+  FLAGS
+    ROUND_OPT
+)
+
+add_header_library(
+  truncf
+  HDRS
+    truncf.h
+  DEPENDS
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+  FLAGS
+    ROUND_OPT
+)
+
+add_header_library(
+  truncf128
+  HDRS
+    truncf128.h
+  DEPENDS
+    libc.include.llvm-libc-types.float128
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+)
+
+add_header_library(
+  truncf16
+  HDRS
+    truncf16.h
+  DEPENDS
+    libc.include.llvm-libc-macros.float16_macros
+    libc.src.__support.FPUtil.cast
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+  FLAGS
+    ROUND_OPT
+)
+
+add_header_library(
+  truncl
+  HDRS
+    truncl.h
+  DEPENDS
+    libc.src.__support.FPUtil.nearest_integer_operations
+    libc.src.__support.macros.config
+)
+
----------------
bassiounix wrote:

```suggestion
```

https://github.com/llvm/llvm-project/pull/195590