Update bazel build and tests.

Author: lntue

libc/src/math/generic/CMakeLists.txt

@@ -4055,7 +4055,7 @@ add_entrypoint_object(
 )
 
 add_header_library(
-  atan_util
+  atan_utils
   HDRS
     atan_utils.h
   DEPENDS
@@ -4090,7 +4090,7 @@ add_entrypoint_object(
   COMPILE_OPTIONS
     -O3
   DEPENDS
-    .atan_util
+    .atan_utils
     libc.src.__support.FPUtil.double_double
     libc.src.__support.FPUtil.fenv_impl
     libc.src.__support.FPUtil.fp_bits
@@ -4123,9 +4123,8 @@ add_entrypoint_object(
     atan2.cpp
   HDRS
     ../atan2.h
-    atan_utils.h
   DEPENDS
-    .atan_util
+    .atan_utils
     libc.src.__support.FPUtil.double_double
     libc.src.__support.FPUtil.fp_bits
     libc.src.__support.FPUtil.multiply_add

utils/bazel/llvm-project-overlay/libc/BUILD.bazel

@@ -1884,9 +1884,13 @@ libc_support_library(
 libc_support_library(
     name = "inv_trigf_utils",
     srcs = ["src/math/generic/inv_trigf_utils.cpp"],
-    hdrs = ["src/math/generic/inv_trigf_utils.h"],
+    hdrs = [
+        "src/math/generic/inv_trigf_utils.h",
+        "src/math/generic/atan_utils.h",
+    ],
     deps = [
         ":__support_common",
+        ":__support_fputil_double_double",
         ":__support_fputil_fma",
         ":__support_fputil_multiply_add",
         ":__support_fputil_polyeval",
@@ -2286,6 +2290,16 @@ libc_math_function(
     ],
 )
 
+libc_math_function(
+    name = "atan",
+    additional_deps = [
+        ":__support_fputil_double_double",
+        ":__support_fputil_nearest_integer",
+        ":__support_macros_optimization",
+        ":inv_trigf_utils",
+    ],
+)
+
 libc_math_function(
     name = "atan2f",
     additional_deps = [

utils/bazel/llvm-project-overlay/libc/test/src/math/BUILD.bazel

@@ -24,6 +24,8 @@ math_mpfr_test(name = "atan2")
 
 math_mpfr_test(name = "atan2f")
 
+math_mpfr_test(name = "atan")
+
 math_mpfr_test(name = "atanf")
 
 math_mpfr_test(name = "atanhf")

utils/bazel/llvm-project-overlay/libc/test/src/math/smoke/BUILD.bazel

@@ -26,6 +26,8 @@ math_test(name = "atan2")
 
 math_test(name = "atan2f")
 
+math_test(name = "atan")
+
 math_test(name = "atanf")
 
 math_test(name = "atanhf")