Revert "Drop clang-13, 14, and 15 due to consteval ICE"

.github/workflows/ci.yml

@@ -38,7 +38,7 @@ jobs:
     uses: boostorg/boost-ci/.github/workflows/reusable.yml@master
     with:
       exclude_compiler: 'clang-3.5,clang-3.6,clang-3.7,clang-3.8,clang-3.9,clang-4.0,clang-5.0,clang-6.0,clang-7,
-                         clang-8,clang-9,clang-10,clang-11,clang-12,clang-13,clang-14,clang-15,
+                         clang-8,clang-9,clang-10,clang-11,clang-12
                          gcc-4.7,gcc-4.8,gcc-4.9,gcc-5,gcc-6,gcc-7,gcc-8,gcc-9,gcc-10'
     # Example of customization:
     # with:

README.md

@@ -7,6 +7,6 @@ A safe and fully featured replacement for C++ builtin numeric types.
 This library requires C++20 and is tested on the following platforms:
 
 * GCC 11 and later
-* Clang 16 and later
+* Clang 13 and later
 * Visual Studio 2022 and later
 * Intel OneAPI DPC++

doc/modules/ROOT/pages/overview.adoc

@@ -31,7 +31,7 @@ Boost.SafeNumbers is tested natively on Ubuntu (x86_64, x86_32, s390x, aarch64,
 as well as emulated PPC64LE using QEMU with the following compilers:
 
 * GCC 11 and later
-* Clang 16 and later
+* Clang 13 and later
 * Visual Studio 2022 (14.3) and later
 * Intel OneAPI DPC++ 2024.2 and later