lib64quadmath0 software package provides GCC Quad-Precision Math Library (64bit), you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install lib64quadmath0
lib64quadmath0 is installed in your system.
Make ensure the lib64quadmath0 package were installed using the commands given below,
$ sudo dpkg-query -l | grep lib64quadmath0 *
You will get with lib64quadmath0 package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Libraries |
| Package | lib64quadmath0 |
| Version | 6.2.0-13ubuntu1 |
| Description | GCC Quad-Precision Math Library (64bit) |
| Sub Section | libs |