[libc-commits] [libc] [libc][math] Implement correctly rounded double precision tan (PR #97489)

[Joseph Huber via libc-commits]

================
@@ -323,6 +323,27 @@ add_entrypoint_object(
     -O3
 )
 
+add_entrypoint_object(
+  tan
+  SRCS
+    tan.cpp
+  HDRS
+    ../tan.h
+  DEPENDS
+    .range_reduction_double
+    libc.hdr.errno_macros
+    libc.src.errno.errno
+    libc.src.__support.FPUtil.double_double
+    libc.src.__support.FPUtil.dyadic_float
+    libc.src.__support.FPUtil.except_value_utils
+    libc.src.__support.FPUtil.fenv_impl
+    libc.src.__support.FPUtil.fp_bits
+    libc.src.__support.FPUtil.multiply_add
+    libc.src.__support.macros.optimization
+  COMPILE_OPTIONS
+    -O3
----------------
jhuber6 wrote:

We don't do debug builds at all for math, right? I think normally a release build is `O2` so it makes sense to override to `O3` in that case.

https://github.com/llvm/llvm-project/pull/97489