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Table 12. Testing simple Perl matches (platform = Windows x64, compiler = Microsoft Visual C++ version 14.0)
| 
                    Expression | boost 1.60 | PCRE-10.10 | RE2 | std::regex | boost::xpressive::cregex | 
|---|---|---|---|---|---|
| 
                     | 
                    2.03 | 
                    1.25 | 
                    1.00 | 
                    20.73 | 
                    1.38 | 
| 
                     | 
                    1.71 | 
                    2.01 | 
                    2.38 | 
                    30.81 | 
                    1.00 | 
| 
                     | 
                    2.66 | 
                    2.09 | 
                    1.00 | 
                    38.14 | 
                    1.87 | 
| 
                     | 
                    2.90 | 
                    2.31 | 
                    1.00 | 
                    41.41 | 
                    2.00 | 
| 
                     | 
                    2.74 | 
                    2.17 | 
                    1.00 | 
                    38.15 | 
                    2.20 | 
| 
                     | 
                    1.63 | 
                    1.14 | 
                    1.13 | 
                    34.15 | 
                    1.00 | 
| 
                     | 
                    1.69 | 
                    1.18 | 
                    1.18 | 
                    35.54 | 
                    1.00 | 
| 
                     | 
                    1.60 | 
                    1.15 | 
                    1.10 | 
                    39.99 | 
                    1.00 | 
| 
                     | 
                    1.65 | 
                    1.00 | 
                    1.31 | 
                    16.57 | 
                    1.03 | 
| 
                     | 
                    1.58 | 
                    1.00 | 
                    1.19 | 
                    16.54 | 
                    1.02 | 
| 
                     | 
                    1.57 | 
                    1.00 | 
                    1.10 | 
                    21.83 | 
                    1.00 | 
| 
                     | 
                    1.50 | 
                    1.01 | 
                    1.05 | 
                    17.67 | 
                    1.00 | 
| 
                     | 
                    1.53 | 
                    1.00 | 
                    1.07 | 
                    18.05 | 
                    1.00 | 
| 
                     | 
                    2.10 | 
                    1.00 | 
                    1.30 | 
                    9.89 | 
                    1.25 |