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##### LFANT - 2019

Overall Objectives
New Software and Platforms
Partnerships and Cooperations
Bibliography

## Section: New Software and Platforms

### CM

Keyword: Arithmetic

Functional Description: The Cm software implements the construction of ring class fields of imaginary quadratic number fields and of elliptic curves with complex multiplication via floating point approximations. It consists of libraries that can be called from within a C program and of executable command line applications.

Release Functional Description: Features - Precisions beyond 300000 bits are now supported by an addition chain of variable length for the -function. Dependencies - The minimal version number of Mpfr has been increased to 3.0.0, that of Mpc to 1.0.0 and that of Pari to 2.7.0.

• Participant: Andreas Enge

• Contact: Andreas Enge