87c016078a
Add the string to floating point conversion functions. Long doubles aren't supported yet, but floats and doubles are. The primary algorithm used is the Eisel-Lemire ParseNumberF64 algorithm, with the Simple Decimal Conversion algorithm as backup. Links for more information on the algorithms: Number Parsing at a Gigabyte per Second, Software: Practice and Experience 51 (8), 2021 (https://arxiv.org/abs/2101.11408) https://nigeltao.github.io/blog/2020/eisel-lemire.html https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html Differential Revision: https://reviews.llvm.org/D109261
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
//===-- Template to diff single-input-single-output functions ---*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_FUZZING_STDLIB_STRING_PARSER_OUTPUT_DIFF_H
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#define LLVM_LIBC_FUZZING_STDLIB_STRING_PARSER_OUTPUT_DIFF_H
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#include "fuzzing/math/Compare.h"
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#include <stddef.h>
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#include <stdint.h>
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template <typename T> using StringInputSingleOutputFunc = T (*)(const char *);
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template <typename T>
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void StringParserOutputDiff(StringInputSingleOutputFunc<T> func1,
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StringInputSingleOutputFunc<T> func2,
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const uint8_t *data, size_t size) {
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if (size < sizeof(T))
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return;
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const char *x = reinterpret_cast<const char *>(data);
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T result1 = func1(x);
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T result2 = func2(x);
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if (!ValuesEqual(result1, result2))
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__builtin_trap();
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}
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#endif // LLVM_LIBC_FUZZING_STDLIB_STRING_PARSER_OUTPUT_DIFF_H
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