[libcxx-commits] [libcxx] c433135 - [libc++] Remove unused headers from <cmath> (#213114)

[via libcxx-commits]

Author: Louis Dionne
Date: 2026-07-31T13:25:22-04:00
New Revision: c433135c99fc3306ae93fa8cff9e5c00ad0ece3c

URL: https://github.com/llvm/llvm-project/commit/c433135c99fc3306ae93fa8cff9e5c00ad0ece3c
DIFF: https://github.com/llvm/llvm-project/commit/c433135c99fc3306ae93fa8cff9e5c00ad0ece3c.diff

LOG: [libc++] Remove unused headers from <cmath> (#213114)

I believe these headers were relevant when we actually implemented
functions in `<cmath>`, but they are not anymore. Note that ::hypot in
particular is obtained from <math.h> like all the other math functions.

Co-authored-by: A. Jiang <de34 at live.cn>

Added: 
    

Modified: 
    libcxx/include/cmath
    libcxx/test/std/numerics/complex.number/cases.h

Removed: 
    


################################################################################
diff  --git a/libcxx/include/cmath b/libcxx/include/cmath
index 27698a09fd75f..eea89ccdfb339 100644
--- a/libcxx/include/cmath
+++ b/libcxx/include/cmath
@@ -316,15 +316,11 @@ constexpr long double lerp(long double a, long double b, long double t) noexcept
 #  include <__cxx03/cmath>
 #else
 #  include <__config>
-#  include <__math/hypot.h>
 #  include <__type_traits/enable_if.h>
 #  include <__type_traits/is_arithmetic.h>
-#  include <__type_traits/is_constant_evaluated.h>
 #  include <__type_traits/is_floating_point.h>
 #  include <__type_traits/is_same.h>
 #  include <__type_traits/promote.h>
-#  include <__type_traits/remove_cv.h>
-#  include <limits>
 #  include <version>
 
 #  include <__math/special_functions.h>

diff  --git a/libcxx/test/std/numerics/complex.number/cases.h b/libcxx/test/std/numerics/complex.number/cases.h
index b360e1423ff57..3bcbdb202cf6d 100644
--- a/libcxx/test/std/numerics/complex.number/cases.h
+++ b/libcxx/test/std/numerics/complex.number/cases.h
@@ -14,7 +14,9 @@
 #define CASES_H
 
 #include <cassert>
+#include <cmath>
 #include <complex>
+#include <limits>
 #include <type_traits>
 
 #include "test_macros.h"