.. _V1.01.176:

**v1.01.176** ZZZZ176 — Validation of operators PRE_IDEAS, PRE_GMSH,, PRE_GIBI, LIRE_RESU and IMPR_RESU
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**Summary:**

The objective of this test case is to validate the operators PRE_IDEAS, PRE_GMSH,,, PRE_GIBI, LIRE_RESU and IMPR_RESU by performing the following operations:


* Reading the experimental deformations (frequencies and modal deformations) stored in the universal file:


    * LIRE_RESU (FORMAT =' IDEAS ')


* Writing (IMPR_RESU) and reading (LIRE_RESU) a mesh in the format:


    * 'GMSH',


    * 'IDEAS',

We check:


* The frequencies read,


* The coordinates of the nodes.

This documentation is deliberately brief.