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Zhihao Yuan 5a466fcca7 [libc++] Fix leading zeros in std::to_chars ... Summary: It is a bugfix proposal for https://bugs.llvm.org/show_bug.cgi?id=42166. `std::to_chars` appends leading zeros if input 64-bit value has 9, 10 or 11 digits. According to documentation `std::to_chars` must not append leading zeros: https://en.cppreference.com/w/cpp/utility/to_chars Changeset should not affect `std::to_chars` performance: http://quick-bench.com/CEpRs14xxA9WLvkXFtaJ3TWOVAg Unit test that `std::from_chars` supports compatibility for both `std::to_chars` outputs (previous and fixed one) already exists: 1f60111b59/test/std/utilities/charconv/charconv.from.chars/integral.pass.cpp (L63) Reviewers: lichray, mclow.lists, ldionne, EricWF Reviewed By: lichray, mclow.lists Subscribers: zoecarver, christof, dexonsmith, libcxx-commits Differential Revision: https://reviews.llvm.org/D63047 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@362967 91177308-0d34-0410-b5e6-96231b3b80d8		6 years ago
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charconv.from.chars	Add include for 'test_macros.h' to all the tests that were missing them. Thanks to Zoe for the (big, but simple) patch. NFC intended.	6 years ago
charconv.to.chars	[libc++] Fix leading zeros in std::to_chars	6 years ago