#include <fmt/format-inl.h>

#include <iostream>

int main() {

  std::cout << fmt::format("The answer is {:.5f}.\n", 42);

}

10.7.0-dbg>select SFORMAT ('FLOAT {:.5f}',3);

+-----------------------------+

| SFORMAT ('FLOAT {:.5f}',3) |

+-----------------------------+

| NULL                        |

+-----------------------------+

1 row in set, 1 warning (0.000 sec)

10.7.0-dbg>show warnings;

+---------+------+-------------------------------------------------------------+

| Level   | Code | Message                                                     |

+---------+------+-------------------------------------------------------------+

| Warning | 4183 | SFORMAT error: precision not allowed for this argument type |

+---------+------+-------------------------------------------------------------+

1 row in set (0.000 sec)

10.7.0-dbg>select SFORMAT ('FLOAT {:.5f}',3.1);

+-------------------------------+

| SFORMAT ( 'FLOAT {:.5f}',3.1) |

+-------------------------------+

| FLOAT 3.10000                 |

+-------------------------------+

1 row in set (0.000 sec)

10.7.0-dbg>select SFORMAT ('FLOAT {:.5f}',3.);

+------------------------------+

| SFORMAT ('FLOAT {:.5f}',3.) |

+------------------------------+

| FLOAT 3.00000                |

+------------------------------+

1 row in set (0.000 sec)