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File Release Notes and Changelog

Release Name: GMP-ECM 6.1.3

Release Notes
This is a bugfix release.
Change Log
Changes between ecm-6.1.2 and ecm-6.1.3:
* fixed incorrect computation of memory use in stage 2, especially for machines 
that use Kronecker-Schoenhage multiplication even for large degrees, such as Core 2
* fixed -B2scale option whose value hadn't been passed to the factoring routines
* fixed default B2min for P-1 which could be truncated on 32 bit machines, causing stage 2 to take a little longer than necessary
* fixed bug for modular multiplication modulo Fermat numbers 2^2^n+1, where a result of 2^2^n would be truncated to 0