Fix: Slightly incorrect value for pi #516

Job	Run time
build_windows (NO)	4m 35s
build_linux_deprecated_extensions (gcc-9, ubuntu-22.04)	3m 8s
build_windows (YES)	4m 0s
build_linux (gcc-9, ubuntu-22.04, NO)	2m 34s
build_linux_deprecated_extensions (gcc-10, ubuntu-22.04)	2m 53s
build_linux (gcc-10, ubuntu-22.04, NO)	2m 44s
build_linux_deprecated_extensions (clang-13, ubuntu-22.04)	2m 59s
build_linux (gcc-10, ubuntu-22.04, YES)	6m 42s
build_linux_deprecated_extensions (ubuntu-24.04, gcc-14, g++-14)	2m 34s
build_windows_deprecated_extensions	3m 38s
build_linux (clang-13, ubuntu-22.04, NO)	2m 38s
build_linux (clang-15, ubuntu-22.04, NO)	2m 42s
build_linux_deprecated_extensions (ubuntu-24.04, clang-18, clang++-18)	2m 43s
build_linux (clang-15, ubuntu-22.04, YES)	3m 7s
build_linux (ubuntu-24.04, gcc-14, g++-14)	2m 35s
build_linux (ubuntu-24.04, clang-18, clang++-18)	2m 42s
	52m 14s

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