o2scl::quartic_real_gsl Class Reference

Solve a quartic with real coefficients and real roots (GSL) More...

`#include <poly.h>`

Inheritance diagram for o2scl::quartic_real_gsl:

## Public Member Functions | |

virtual int | solve_r (const double a4, const double b4, const double c4, const double d4, const double e4, double &x1, double &x2, double &x3, double &x4) |

Solves the polynomial giving the four real solutions , , , and . | |

const char * | type () |

Return a string denoting the type ("quartic_real_gsl") | |

Public Member Functions inherited from o2scl::quartic_real | |

const char * | type () |

Return a string denoting the type ("quartic_real") | |

## Public Attributes | |

double | cube_root_tol |

A tolerance for determining the proper cube root (default ) | |

This class internally uses the GSL functions to solve the resolvent cubic and associated quadratics, while quartic_real_gsl2 contains explicit code to solve them instead.

**Idea for Future:**- Optimize value of
`cube_root_tol`

and compare more clearly to o2scl::quartic_real_gsl2

The documentation for this class was generated from the following file:

- /home/awsteiner/wcs/o2scl/src/other/poly.h

Documentation generated with Doxygen. Provided under the
GNU Free Documentation License (see License Information).