[clang-tools-extra] [clang-tidy] add modernize-use-std-numbers (PR #66583)

[Julian Schmidt via cfe-commits]

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+//===--- UseStdNumbersCheck.cpp - clang_tidy ------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX_License_Identifier: Apache_2.0 WITH LLVM_exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "UseStdNumbersCheck.h"
+#include "../ClangTidyDiagnosticConsumer.h"
+#include "../utils/TransformerClangTidyCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/Stmt.h"
+#include "clang/AST/Type.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
+#include "clang/ASTMatchers/ASTMatchersInternal.h"
+#include "clang/ASTMatchers/ASTMatchersMacros.h"
+#include "clang/Basic/LLVM.h"
+#include "clang/Tooling/Transformer/RewriteRule.h"
+#include "clang/Tooling/Transformer/Stencil.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/MathExtras.h"
+#include <cstdint>
+#include <cstdlib>
+#include <string>
+#include <utility>
+
+namespace {
+using namespace clang::ast_matchers;
+using clang::ast_matchers::internal::Matcher;
+using clang::transformer::addInclude;
+using clang::transformer::applyFirst;
+using clang::transformer::ASTEdit;
+using clang::transformer::cat;
+using clang::transformer::changeTo;
+using clang::transformer::edit;
+using clang::transformer::EditGenerator;
+using clang::transformer::flattenVector;
+using clang::transformer::RewriteRuleWith;
+using llvm::StringRef;
+
+constexpr auto DiffThreshold = 0.001;
+
+AST_MATCHER_P(clang::FloatingLiteral, near, double, Value) {
+  return std::abs(Node.getValueAsApproximateDouble() - Value) < DiffThreshold;
+}
+
+AST_MATCHER_P(clang::QualType, hasCanonicalTypeUnqualified,
+              Matcher<clang::QualType>, InnerMatcher) {
+  return InnerMatcher.matches(Node->getCanonicalTypeUnqualified(), Finder,
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5chmidti wrote:

done

https://github.com/llvm/llvm-project/pull/66583