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Table 13. Testing simple Perl matches (platform = linux, compiler = GNU C++ version 5.1.0)
| 
                    Expression | std::regex | boost 1.59 | boost::xpressive::cregex | PCRE-10.10 | 
|---|---|---|---|---|
| 
                     | 
                    2.72 | 
                    2.85 | 
                    1.00 | 
                    1.33 | 
| 
                     | 
                    19.85 | 
                    2.68 | 
                    1.00 | 
                    2.94 | 
| 
                     | - | 
                    2.16 | 
                    1.00 | 
                    1.25 | 
| 
                     | - | 
                    2.22 | 
                    1.00 | 
                    1.28 | 
| 
                     | - | 
                    2.10 | 
                    1.00 | 
                    1.16 | 
| 
                     | 
                    4.08 | 
                    2.51 | 
                    1.00 | 
                    1.42 | 
| 
                     | 
                    4.14 | 
                    2.49 | 
                    1.00 | 
                    1.46 | 
| 
                     | 
                    3.17 | 
                    2.25 | 
                    1.00 | 
                    1.32 | 
| 
                     | 
                    3.02 | 
                    2.52 | 
                    1.00 | 
                    1.18 | 
| 
                     | 
                    2.70 | 
                    2.25 | 
                    1.00 | 
                    1.18 | 
| 
                     | 
                    2.54 | 
                    2.39 | 
                    1.00 | 
                    1.16 | 
| 
                     | 
                    2.46 | 
                    2.39 | 
                    1.00 | 
                    1.18 | 
| 
                     | 
                    2.51 | 
                    2.31 | 
                    1.00 | 
                    1.12 | 
| 
                     | 
                    1.92 | 
                    2.12 | 
                    1.07 | 
                    1.00 |